Welcome to MACOM's Third Fiscal Quarter 2023 Conference Call. This call is being recorded today, Thursday, August 3, 2023. [Operator Instructions] I will now turn the call over to Mr. Steve Ferranti, MACOM's Vice President of Strategic Initiatives and Investor Relations. Mr. Ferranti, please go ahead.

Thank you, Olivia. Good morning, and welcome to our call to discuss MACOM's financial results for the third fiscal quarter of 2023. I would like to remind everyone that our discussion today will contain forward-looking statements, which are subject to certain risks and uncertainties as defined in the Safe Harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. Actual results may differ materially from those discussed today. For more detailed discussions of the risks and uncertainties that could result in those differences, we refer you to MACOM's filings with the SEC. Management's statements during this call will also include discussion of certain adjusted non-GAAP financial information. A reconciliation of GAAP to adjusted non-GAAP results are provided in the company’s press release and related Form 8-K, which was filed with the SEC today. With that, I'll turn over the call to Steve Daly, President and CEO of MACOM.

Thank you, and good morning. I will begin today's call with a general update on our business. After that, Jack Kober, our Chief Financial Officer, will provide a more in-depth review of our results for the third quarter of fiscal 2023. I will then provide revenue and earnings guidance for our fourth fiscal quarter, and we will be happy to take some questions. Revenue for the third quarter of 2023 was $148.5 million and adjusted EPS was $0.54 per diluted share. Cash flow from operations was approximately $46 million, and we ended the quarter with $588 million and cash and short-term investments on our balance sheet. Our team did an excellent job in meeting our business and financial objectives, albeit in a challenging market environment. We are especially pleased with our cash flow as we manage our way through the down part of the cycle. Our book-to-bill ratio in Q3 was .9, which was a significant improvement over Q2. Our total company backlog decreased slightly quarter-over-quarter, although it remains at a healthy level. The bookings growth was driven primarily by our data center and defense customers. Our turns business or revenue booked and shipped within the quarter represented approximately 18% of our total revenue, which is approaching historical norms. While we are encouraged by the improvement in bookings the broader demand environment remains weak in several of our served markets, and in particular with the telecom and market. I'll note that customer cancellations and push out requests have slowed, which is a positive indicator. However, I would still characterize overall industry inventory levels as high, with many customers still carrying excess inventory. Our external sales channel inventory did decrease in Q3, and we plan to manage our external sales channel inventories down again in Q4. Turning to our discussion of…

Thank you, Steve, and good morning, everyone. Our results for the third quarter of fiscal 2023 were within our guidance for the period. Revenue for the third quarter was $148.5 million, down 12% quarter-over-quarter. The sequential decrease was driven by weakness in Telecom and Data Center markets with a slight sequential increase in Industrial and Defense. On a geographic basis, sales to domestic customers represented 49% of revenue, flat sequentially. Sales to China based customers were 16% of revenue, down from 20% in our fiscal second quarter. Despite sales declines in China, we continue to see additional growth opportunities in Asia and Europe. Adjusted gross profit was $89.2 million, or 60.1% of revenue, down 200 basis points sequentially driven by lower absorption of some of our fixed costs with the lower Q3 revenue levels. MACOM utilizes a flexible manufacturing model, leveraging our internal wafer fabs as well as third-party foundries, which we believe will provide financial leverage as business cycles and revenue improve. Total adjusted operating expense was $52.2 million, consisting of R&D expense of $33.2 million, and SG&A expense of $19 million. As expected, our total operating expenses were sequentially up by $3.6 million, mostly due to the incremental expense from our acquisition of Linearizer and the establishment of our European Semiconductor Center in France. Adjusted operating income in fiscal Q3 was $37 million, down from $56.6 million in fiscal Q2. Adjusted operating margin was 24.9% for fiscal Q3 sequentially down from 33.4% in Q2. Going forward, we expect our operating margins to improve as revenue recovers. Depreciation expense for fiscal Q3 was $5.8 million and adjusted EBITDA was $42.8 million. Trailing 12-month adjusted EBITDA was $233.1 million, compared to $250.3 million in Q2 fiscal 2023. Adjusted net interest income for Q3 was $2.8 million, up roughly $700,000 from…

Thank you, Jack. MACOM expects revenue in fiscal Q4 ending September 29, 2023, to be in the range of $148 million to $152 million. Adjusted gross margin is expected to be in the range of 59% to 61%, and adjusted earnings per share is expected to be between $0.53 and $0.57, based on 71.5 million fully diluted shares. Sequentially, in Q4, we expect revenue in I&D and Telecom to be down and Data Center up. And finally, as you may have seen in a press release issued yesterday, I am pleased to announce the appointment of Wayne Struble as Senior Vice President, Advanced Semiconductor Technology, a new -- newly created position reporting to me. Wayne will be a key contributor to the development and management of our semiconductor technology roadmap. Wayne has over 40 years of experience in the RF and microwave engineering -- in RF and microwave engineering, and has served as a MACOM distinguished fellow of technology since joining MACOM in 2010. I would like to congratulate Wayne on this well deserved promotion and the entire management team, and I look forward to working more closely with him going forward. I would now like to ask the operator to take any questions.

[Operator Instructions] And our first question coming from the line of Tom O’Malley with Barclays. Your line is open. Tom O’Malley: Good morning, guys. And thanks for taking my question. I guess my first question, it's something that you've highlighted since you took over the company, it's just a strategic review process in July. You mentioned the $1 billion again. Can you just give us any update on the timeline there? Could you talk about just the overarching growth drivers that get you to that $1 billion and just the framework that you put together over the last month that's going to guide you from this point over the next couple of years?

Sure. Good morning, Tom. So the timing of that is in the -- our fiscal '26 or early '27 timeframe, which is about a 1 or 1.5 year behind what we had sort of originally stated a year ago, primarily due to the softness in the market slowing things down this year. When we look at our growth trajectory, we want to achieve at least our 10-year historical CAGR, which is about 14%. When we look at what's going to be driving our growth, it's primarily new product driven, not necessarily acquisition driven. And I think more importantly, when we start to look at the P&L at that $1 billion to $1.3 billion run rate, we see an EPS close to $5. And so part of our strategy is to make sure that we are growing profitable revenue that's accretive to the business model. In terms of the specific product lines or segments that we're focused on, it's really the same markets that we've been speaking about over the past few years. Certainly, we believe telecom over the long-term will drive growth, followed by Industrial and Defense, and then the Data Center. And then the framework that I talked about is really some of those details that I spoke of in my prepared remarks. It's really an external review of market dynamics, looking at our capability to design and then positioning the company in a market where we know we can be successful. Tom O’Malley: Helpful. And then something I guess, more shorter term than the overarching question there. It looks like Data Center was a lot stronger, particularly well into the September quarter. You mentioned specifically higher speed connections at 400G and 800G. Is that the area of the Data Center business that you're seeing accelerate? And could you talk about different areas where you're seeing traction with those deployments? Thank you.

You're correct that we are predicting strong growth in our fourth quarter for the Data Center business. In fact, we think it will be so strong that we'll have year-over-year growth within the segment. So this would represent 5 years in a row where the Data Center end market is growing. So we're happy about that. The growth is primarily coming from 400 and 100G short reach applications. Typically, it's 100G per lane. And we have a very strong position with some of our latest products that are ramping quite quickly. We have not seen a general recovery in the lower data rate applications, sort of the standard 4x50G or 8x50G type applications. Where we see the growth is primarily short reach 100G per lane. Some of these products are supporting linear drive applications. Most, if not all of the business is coming from PAM4 protocol. And so we do expect that good things in the quarter.

Thank you. And our next question coming from the line of C.J. Muse with Evercore ISI. Your line is open.

Yes. Good afternoon -- good morning, sorry. Thank you for taking the question. I guess first question, just to follow-up on Tom's question on the Data Center. You just highlighted year-over-year growth, which means roughly $10 million plus growth sequentially. And I guess, can you speak to kind of the trends that you're seeing in terms of kind of, I guess, AI data center trends versus kind of base case? And is there enough kind of spending on this high speed connectivity related on the AI side to sustain growth in Data Center through the calendar year.

Right. So, our primary focus for product development within the data center is analogue solutions as well as optical photo detectors and lasers. That -- those are the -- really the three areas that we focus on. And so wherever we can find an application, whether it's a pluggable transceiver, CPO, an active optical cable, or even a active electrical copper cable, we want to sell our products into those applications. We have definitely seen an increase in what we would consider AI-related deployments and applications. And we've seen many examples where customers are excited to perhaps reduce the diameter of a copper cable by electrifying it in running it at higher data rate over a slightly longer reach than they could have otherwise. And that's been a growth area for us. And then of course, the linear drive, as we've talked about in the past has many advantages over a DSP solution. And so we are seeing a bit of a convergence around this type of architecture. And this is typically in areas where you have 100 gig switch effectively, and you have 100 gig optical. And so this is an example where MACOM can insert one or two, or maybe three or four different products that go into these applications. And the key here really for the customer is there's no gearbox, lower power consumption, lower latency and lower cost. And so, of course, the challenge is designing these optical channels with just equalization, or an analogue solution for signal integrity is very difficult. So the design processes is complex. And we've been working with major OEMs to support the growth of this part of our business.

Very helpful. I guess, maybe a broader cyclical question. You talked about book-to-bill almost to 1 versus .5 last quarter. Turns normalizing. It looks like backlog somewhere close to $300 million, still strong. Are you suggesting that we're nearing the bottom for the totality of your business? Or might it take a few more quarters for telecom to bottom?

So we try not to call the bottoms, let's say, because we really don't know. And what we can say based on where we are today that for a year-over-year comparison, two of our three markets will be up, I&D will be up, Data Center will be up, and Telecom will be down somewhere between 20% and 25%. And as I highlighted in my comments that the inbound new business, and has been quite weak this year, for Telecom. We do expect at some point that will turn. We see certainly great opportunities in the SATCOM market with the deployment of a wide range of different satellite platforms, which we believe can provide certainly near-term growth opportunities. But it's very difficult for us to say sort of where the bottom is and what might happen 3 or 6 months from now.

Thank you. And our next question coming from the line of Tore Svanberg with Stifel. Your line is open.

Yes. Thank you. Good morning, and congrats on the order turnaround here. Steve, you talked about being able to support InfiniBand and Ethernet. You also said that for next quarter, it sounds like most of the growth is going to come from PAM4. So does that mean InfiniBand is kind of further out. If you could just add any color, that'd be great.

Yes, so most of our -- I would say more than 50% of our Data Center revenue over the past few quarters has been PAM4 related. And so we see that trend continuing as we go into the -- our fiscal '24. So I would certainly highlight that point. The other point I would make, frankly, is that InfiniBand and Ethernet are both PAM4.

Perfect. Thank you. And as a follow-up, you mentioned China revenue 16%. Is that predominantly pawn at this point? Or do you still have some base station business there? Just trying to understand regionally where the risks are and so on and so forth with that 16% revenue?

Well, I would say there's been a broad decrease in our China based business. It's primarily on the optical side and 5G related. And so I would say that's the area that's the weakest. Areas where we see support would certainly be in some parts of -- some 5G networks we are supporting at a low-level. But there's no doubt that this year is going to be a down year for our China business. And as it starts to come back, it will be -- it will come back primarily due to the recovery from our Data Center and Optical customers.

Thank you. And our next question coming from the line of Karl Ackerman with BNP Paribas. Your line is open.

Yes, thank you. Good morning. I wanted to follow-up on Data Center for a second. I just wanted to confirm, are you suggesting that Data Center is up year-over-year in the fiscal fourth quarter, or for fiscal 2023 as a whole? And I have a follow-up.

Sure. So from a Data Center point of view, going into Q4, it would be up certainly quarter-over-quarter significantly, as well as year-over-year. I would say very strong double-digit quarter-over-quarter and high-single-digit year-over-year. And just to highlight that color of our Data Center revenue has shifted quite a bit this fiscal year. The first half strength predominantly came from shipping backlog that was constrained in fiscal '22 due to supply issues. And we cleared out a lot of that backlog in the first half. Then in Q3, we effectively hit an air gap where there was very little demand on what I would consider a base business to the inventory issues. And now what we're starting to see is growth and demand for our higher data rate products for 400 and 100G that is just starting to kick in. So when you add all of that up, what you ultimately get is growth year-over-year, and growth quarter-over-quarter for the fourth quarter.

Yes. Thanks for that. I guess, is there anything to read into your prepared remarks on slowing sales in China? Is the reduction due to general market malaise [ph] in 5G infrastructure as you just call it out? Or are you seeing competitive pressures there? Can you just clarify on that, that would be very helpful. Thank you.

Yes. Well, just to come back to your last question, we -- for -- so that you're perfectly clear, there will be full year, year-over-year growth for our Data Center. That is what we're expecting. And then answering your question about China. So China, our revenues there have been trending down pretty much all year. We started, I think, in Q1 about 20% to 23% of our business was China based. And now it's in the mid-teens. Most of that is due to 5G in front haul weaknesses as well as we just talked about the Data Center. I would say that there's always been a very competitive dynamic in China. And that that competitive dynamic, I would say is increasing. There's certainly more and more focus on supplying locally and having local vendor supply, the local OEMs. And so I would say that that trend is increasing and some of that's due to geopolitical reasons. We have not been defocusing our efforts on China. Today's still some of the major telecom suppliers into the optical networks and whatnot are based in China. So we'll continue to service the market. We're not pulling back per se. However, I would also add that we are focused on developing our revenues in other areas including Europe and that's one of the main reasons why we decided to establish facilities and manufacturing inside of the EU.

Thank you. And our next question coming from the line of Harlan Sur Jr. with J.P. Morgan. Your line is open.

Yes, good morning, and thanks for taking my question. Good to see the inflection or activity, but can be quite noisy right during this period of sort of macro weakness, but it looks like they dynamics are stabilizing, that is reflected by the decline in orders and push out. So quarter-to-date here in September are bookings continuing to rise sequentially? And what's the turns assumption embedded in your September quarter guide?

So, we were certainly very pleased with our .9 book-to-bill in the third quarter. And I would say that we've started the fourth quarter with strong bookings. And it certainly would be our expectation that we can be somewhere around the .9 to 1 book-to-bill this quarter. That's our expectation. We'll see how August and September go. A lot of these programs that are coming in are also program related, large program related. So in some instances, we have good line of sight. But I think your point about the choppiness is absolutely there. As I highlighted, the telecom market is still very, very weak. We see that many of our major customers still are carrying tremendous levels of inventory, including CATV customers. And then regarding your question about the turns, I think we're going to have similar turns level in Q4 as we had in Q3.

Thank you for that. And then congratulations on the close [indiscernible]. It looks like their operations are going to become the hub of your European semiconductor sector. Is the MACOM team going to be transferring some of its MACOM originated GaAs and GaN based MMIC technology to the OMMIC fab including your .14 micron GaN technology, and what's the revenue potential out of their current 3 inch manufacturing line?

So thanks for that comment and question. So just to highlight we have had operations in Europe. We have a fairly large facility in Cork, Ireland, where we have a design center, we do quality and reliability testing. And we have a fair amount of sales and finance and administration, supporting a lot of our international business. So Cork is certainly today the main hub of MACOM certainly in Europe. We've also had a design center in Sofia, France for over 10 years, and they've done a superb job supporting a lot of our high performance analogue product development. And then adding a wafer fab and a group that is expert at very high frequency millimeter wave process technology really complements the portfolio. We do not have any plans to transfer any of our technology that we're running here, including the .14 micron process to France. Instead, we will continue to build and develop the technologies that they've been working on. And as a priority move some of those process technologies from the 3 inch line to a 6 inch line. We haven't explicitly said what the revenue potential is of that fab, we probably wouldn't want to say that. That -- with that level of detail. But what I can tell you is right now that is -- that fab is underutilized. It has -- we see a tremendous opportunity for growth. And our sales team and our business development teams are very actively, really turning the business around. And we see that will be a nice growth vector for us over the next 1 to 2 years.

Thank you. And our next question coming from the line of Vivek Arya with Bank of America. Your line is open.

Hi. This is Blake Friedman on for Vivek. Thanks for taking my question. Just kind of want to focus a little bit more on the Q4 guide. I know you gave color around Data center. If you can provide kind of the sequential commentary, maybe for the Industrial and Defense and Telecom business, the magnitude of the declines in each of those areas, that'd be helpful.

Sure. I'll say a word on that. And then maybe Jack can add in. So as we -- as we've talked about, we do expect very strong Data Center growth. And we expect I&D will be down in the sort of mid single digits in Telecom and somewhere between 10% and 15%, down sequentially. And Jack, I don't know whether you want to add to that.

Yes, I think I would just add we've developed a fairly strong backlog over the past couple of years. And we've eaten into that a little bit over the past couple of quarters. So I think with regard to some of those Q4 guide items that we have with Industrial and Defense and Telecom being down that's also coming on the back of lower than 1 to 1 book-to-bill. So we need to work some of those lower order patterns that we've seen coming through the past couple of quarters through this Q4 time period. But once again, as I had mentioned, we do have a fairly strong backlog that supports the business going into Q4 and beyond.

Got it. And then just kind of following up on that maybe specifically on the Industrial and Defense side. I know that certainly across the industry several vendors observing some kind of digestion in the core industrial states. I was just -- I know, the segment is kind of about 50%, 60% defense. So I was maybe kind of hoping you can kind of provide more specifics, maybe what you're seeing specifically on trends on the design side, and then areas in core industrial markets that could be a little bit weaker or stronger versus others.

Yes, I would say, in general, our industrial businesses is weak and will remain weak in the near-term. And most of the growth that we're getting in the I&D segment is coming from defense programs, primarily radar programs, rate communication programs. I think we mentioned on last quarter's calls, some heavy demand for international radios coming out of Europe, that we have some content in. So AI -- the AI part of I&D today is weak. I talked about in my prepared remarks some of the new applications that we are going after, within the AI portion there. But generally speaking, it's weak. And the other thing I would add is we're not really a good bellwether of the industrial end market. It's one of the smaller parts of our portfolio.

And Blake, this is Jack. I would just add that some of the inherent business that we have going through from a defense perspective, that can be lumpy at times. And I think the other item when you look at our Industrial and Defense in market is that it's quite diverse. There's a number of different things that work its way into the industrial category as well. So that helps us from a stability standpoint as well.

Thank you. And our next question coming from the line of Matt Ramsay with TD Cowen. Your line is open.

Thank you very much, guys. Good morning. Not to go back to the Data Center stuff, but you can't get through a call now without saying AI a few times. So we kind of got to go there. I wanted to ask about your 400 and 800 gig product portfolio, particularly, you mentioned the linear drive differentiation versus DSPs. Maybe you could expand on that a little bit more from a technical perspective, and also how you're thinking about the penetration of linear drive into those data center markets where we are today, where that can go over time, and what it represents is sort of $1 TAM for your company. Thanks.

Sure. So I'll try to provide a bit more detail. So where we see linear drive working is when you have 100 gig electrical lane matching up with 100 gig optical lane. That's the ideal application. So you can run that at 400, you can run that at 800, you can run that at 1.6 terabits as well. When you use a linear drive architecture, you're effectively removing the function of the DSP or a CDR from the module and you're having the switch effectively manage the interface, the interface within the module, if it's a module. So there's benefits in doing that, just from latency, cost, power consumption. And so that -- those are the benefits and you can eliminate the DSP and still be an applicable form. So you can use this for active optical cables, you can use this for pluggable cables. And so there's customers like that option because then they can use many vendors to support their deployments. What it requires is certainly a switch ASIC that it requires now the module manufacturer to work very closely with the switch vendor. We demonstrated at OFC a few months back three different module manufacturers with an interop with the Tomahawk 5 switch. So it that was ideal for primarily short reach. And that's where MACOM has historically service the short reach market that's just sort of the lane that we're in. And what we sell into that market are drivers and TIAs, primarily in equalizers. So those are the sort of the three product sets. These are highly integrated silicon chips that have all sorts of creature features on them so that the customers can turn the knobs they need to turn to get the product working. And so where we stand right now is we have production at 100G. And we are pretty far along with 200G per lane as well.

Thank you for all that detail. I really do appreciate it. As my follow-up, I think it is encouraging to see book-to-bill up to .9, and I think you guys indicated close to 1, hopefully for the September quarter. Maybe you could give a little bit of color if you could on the three segments and how book-to-bill is trending in each of those, or some well ahead of 1 at this point and what those products might be and are there certain end markets where we're still coming off the .5 that we were last quarter and working our way back up. Thanks.

Right. Well the -- as in Q3, we will see the same behaviors in Q4. It will be primarily Industrial and Defense and Data Center driving the bookings growth or recovery, let's say. We still see tremendous weakness across many of our telecom and segments, cable test and measurement, 5G, these are still very weak, don't expect recovery in the fourth quarter. And in terms of the products its certainly many of the products that we've talked about in the past, a lot of our MMIC products, a lot of our high-end GaAs and GaN products for military applications, there's a wide range of those really supporting the growth within the defense sector. When we think about 2024, the growth drivers from a product set point of view would certainly be GaN. GaN is -- we think 2024 will be a great year for us. We launched the .14 micron process about 6 months ago into production. And our teams are in the process of getting their first design wins, which will turn into production next year. Certainly on the data center side, we think in 2024 there'll be more high data rate applications coming to bear and potentially ramping up. And then in the telecom area, the only real bright spot for us right now is what we're doing in the SATCOM market, both on the ground side and on the satellite side.

Thank you. And our next question coming from the line of Harsh Kumar with Piper Sandler. Your line is open.

Yes. Hey, Steve and Jack. I had a quick one. Steve, when you talked about your long-term drivers, you mentioned the order of Telecom, Industrial and then Data Center. As you try to get to your $1 billion goal by FY '26 or early FY '27, is that how you're thinking about growth to that $1 billion number? Or was that just a random order? And if I can flip the question, if that's not the correct order, what is the correct order as we think about?

Yes, so that is the correct order and that's the way we think about it. But we're oftentimes wrong. More often wrong than right when we make forecasts. So you have to take that with a grain of salt. But when we look at our R&D spending, and we look at the projects that are in our pipeline and where we want to position the company, we see that there's a lot of variability within the telecom space that is very attractive to us. And so we like the diversity, we like the long tail of customers that we can approach, and it plays to a lot of our strengths. So we do end up spending a fair amount of our R&D dollars, developing chips for that end market. Obviously, the A&D [ph] market is another great market for us. I think -- as I think I mentioned on the -- in the script, Q3 was a record for our I&D segment, and this year we'll have great year-over-year growth for the full year. And we expect more good things to happen next year and the year after that, as we start to bring into production some of the new programs that we know were designed into. And the smallest piece of our business is the data center. I realize we get probably the most questions about the data center. But as I highlighted, we do have a narrow focus in the data center where we focus on analogue solutions for short reach, where we can insert high performance connectivity chips, or lasers and detectors. That is our strategy there. So that's a fairly narrow focus strategy.

For [indiscernible] we get things wrong all the time too, so I wouldn't be too hard on yourself. For my follow-up, you're seeing some pretty good pickup in the data center space. The kind of trend you're talking about typically don't go away in a quarter or two. So is it a fair assumption to think that the activity in 100 -- I'm sorry, the activity in 400 and 100 should stick around for a handful of quarters as you look maybe past the next quarter, and a little bit more beyond.

It is possible, and it's very difficult for us to say. And we have certainly seen in the past examples where our programs ramp up very quickly and then they ramped down very quickly. So we have to be cognizant of that. So while we're certainly excited about all the great things we're doing with -- within the data center, we also recognize that it can be a very volatile business.

Thank you. And our next question coming from the line of David Williams with Benchmark. Your line is open.

Good morning. Thanks for taking the question. See, just quickly, I guess on the magnitude of the inventory depletion that you still see needs to happen in the channel. And you've talked about, I think you've mentioned tremendous a few times. So it sounds like fairly heavy level of inventory digestion still needs to happen. But just wondering your thoughts that for us?

Yes, sure. I'll make a comment and then certainly, maybe Jack can add to it. And as everybody knows, the cycle -- the manufacturing cycle times for many of our products can be in the range of 6 months, maybe longer, maybe shorter, depending on the fab in the technology. And as everybody knows, just two quarters ago, we had a run rate of $180 million. So when you're looking at our inventory today, and you relate that to sort of $180 million run rate, you can see that we are, as Jack said, carrying excess inventories at today's level, but if -- but not necessarily, for maybe one or two quarters ago. So we are going through a digestion period where we need to move that inventory out into the market. And part of what we're also doing is making sure that our channels are not carrying excess inventory. And so we are definitely managing that down, we want to see more depletion. And, Jack, maybe you can add to that.

I think as we had discussed in some of our prepared remarks, we're working closely to monitor what's out in the channel, and making sure we understand where things are going there. We have had some positive trends over the past quarter, that are somewhat encouraging. But we will continue to monitor that. And with regard to MACOM's inventory, I described the uptick that we've seen some of that uptick, is associated with some of the acquisitions that we've brought on board when you look back over the past year. But we're also continuing to purchase inventory to support our backlog, and I think most notably the data center backlog that we have.

Great thanks. And Jack, in the past, you've talked about the flexibility and the model on the extent [ph] side. And just hoping you could give us a little more thoughts in terms of modeling and what's appropriate. And if you're -- if you restrain growth or development efforts here, just kind of through the software demand environment.

Yes. So we've been pleased with the gross margin performance of the business, in light of the slowdown over the past few quarters. We've made a fair amount of structural changes to the business to manage the improvements that we've seen over the past couple of years from an overall gross margin standpoint. So we do have the flexible manufacturing model, as I had described with some of the products being manufactured in house, in our internal fabs and others that go to third-party. So that helps us in terms of being able to mitigate some of the costs that that we have with a portion of them being essentially variable. And then I think the other piece that I would like to highlight is our internal manufacturing fabs are generally medium volume, we don't carry the same large overheads like some of the mega fabs have. So that helps protect us to in periods where there may be a slowdown. And then as we look out into the future, and hopefully as we get back to some of the higher run rates that we were at from an overall revenue perspective, I think that will support improving gross margins as we go forward.

Thank you. And our next question coming from the line of Quinn Bolton with Needham. Your line is open.

Hey, just a quick clarification on the 400, 800 gig. Is that almost entirely optical or are you starting to see copper applications, active copper cables starting to take off within that higher speed PAM4 business?

Obviously, both. And some of our chips are four lanes of 100 on a single chip. And you can use two of those to achieve 800. And the other thing I'll know, which is sort of a benefit of the linear driver approach is it can really work with a whole variety of architectures within the module, whether it's a silicon photonic based solution, whether it's DML, or EML, and also thin film lithium-ion [ph] base. So whatever technology the module vendor wants to use, we can support those and including [indiscernible] as well, if I didn't mention that. So very, very flexible technology from MACOM's point of view.

And a follow-up on the linear drive. It sounds like your comments, it's mostly in the Ethernet around Tomahawk 5, but InfiniBand seems like it's much more close channel, you have effectively one vendor, I think, that dominates that market. So it seemed to me that the InfiniBand could be a pretty significant opportunity for linear drive. Where do you think we are in adoption of linear drive in the InfiniBand Market?

So we -- I would agree that we can serve as both sides or both protocols. And I think we, in fact, demonstrated a solution using a InfiniBand application at OFC. So yes, we are supporting that as well.

Thank you. And our next question coming from the line of Richard Shannon with Craig-Hallum. Your line is open.

Hi, guys. Thanks for taking my questions. Steve, I want to follow-up on the responses to an earlier question on GaN. I think you mentioned you're expecting a great year in fiscal '24. Maybe you can help us understand those dynamics and maybe even quantify what you see as the opportunity for your -- for that in that year?

Sure. And I'll sort of define grade as we develop the process, and now we're selling it. So that we'll start selling it in 2024. So we're starting at zero for our .14 micron process. And we are getting design wins and we expect to see growth in that fiscal year. So that's our -- right now that's our definition of grade, that's a win. And so our sales team, our business development team, our fab engineers are excited to make that happen. We haven't put a fine number on the goal, our internal goals, and we haven't shared that externally. And I think it's premature to do that. But we just look at that as another vehicle for growth. We have the full support for major OEMs here in the U.S that want to use the technology. We're doing some novel things regarding R&D, as I mentioned on my prepared remarks, including bringing in sort of next generation process steps to improve performance beyond what we currently have. And so certainly we think next year will be a great year for GaN.

Okay, perfect. Thanks for that detail and last question for me on Data Center here. I just want to verify -- I think you said, I just want to verify is all the upside here you're seeing is on the analogue side, or are you seeing any upside coming with lasers? Obviously had some great discussion, last few quarters on what you're thinking about your laser portfolio, but seems like it's all analogue oriented. Can you confirm that's what you're seeing.

I would say it's true, the growth is coming from the analogue side, and I would characterize our fiscal '23 as a building year for our optical products where lots of design ends and lower revenue than we had expected. So that's been a disappointment. However, the team is making progress winning those design wins, not only at accounts here in the U.S., but also in China. And we're also working on new laser categories, including EMLs and arrays that are -- we have a lot of interest on that. So --- but to your point, yes, the growth for this year, for this quarter in the Data Center is driven by analogue solutions.

Thank you. And I'm not showing any further questions in the queue at this time. I would now like to turn the call back over to Mr. Steve Daly for any closing remarks.

Thank you. In closing, I would like to thank our team for their continued hard work and dedication. Have a nice day.

Ladies and gentlemen, that does conclude our conference for today. Thank you for your participation. You may now disconnect.