MAX3987ETM+T Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
Analog Devices MAX3987ETM+T is a quad 8.5 Gbps continuous-time linear equalizer and pre-emphasis driver, supporting four independent channels of serial data signal conditioning up to 8.5 Gbps per lane in a compact 48-pin LFCSP-7x7 mm package. Compensates PCB trace and cable losses while adding programmable pre-emphasis for downstream channel extension. Available from stock worldwide with fast global shipping.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 48
- Lifecycle
- OBSOLETE
- Datasheet
- MAX3987ETM+T Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MAX3987ETM+T?
- Quad-channel architecture equalizing 4 independent serial lanes at up to 8.5 Gbps per channel
- Continuous-time linear equalizer (CTLE) compensating PCB trace and backplane insertion loss at high data rates
- Programmable pre-emphasis output driver for extending signal reach over FR4 PCB traces or passive cables
- 48-pin LFCSP 7x7 mm low-profile package with exposed thermal pad for efficient heat dissipation
- Peak reflow temperature of 260°C and e3 JEDEC moisture sensitivity code for standard lead-free assembly
What is MAX3987ETM+T used for?
The MAX3987ETM+T is designed for high-speed serial interconnect applications in backplane systems, active cable assemblies, and optical transceiver line cards operating at data rates up to 8.5 Gbps per lane. Its quad-channel architecture makes it suitable for SFP+, XFI, and XAUI interface retiming and equalization in enterprise networking switches, storage controllers, and telecom line cards. The combined equalizer and pre-emphasis function on 4 independent channels allows a single device to condition all lanes of a quad-lane serial interface, reducing chip count and board area.
What are the specifications of MAX3987ETM+T?
| Manufacturer Package Code | 48-LFCSP-7X7X0.75 |
| Date Of Intro | 2009-11-13 |
| YTEOL | 0 |
| JESD-30 Code | S-XQCC-N48 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | UNSPECIFIED |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Telecom IC Type | INTERFACE CIRCUIT |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Where can I find the MAX3987ETM+T datasheet?
MAX3987ETM+T Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for MAX3987ETM+T?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What data rate and how many channels does the MAX3987ETM+T support for serial signal conditioning?
The MAX3987ETM+T provides 4 independent channels each supporting serial data rates up to 8.5 Gbps, making it suitable for quad-lane 10 Gigabit Ethernet (10GbE), XAUI, SFP+, and similar interfaces. The quad-channel design allows a single device to condition all 4 transmit or receive lanes of a high-speed serial link, reducing BOM count and simplifying the PCB layout compared to using four single-channel devices.
How does the continuous-time linear equalizer in the MAX3987ETM+T compensate for PCB insertion loss?
The continuous-time linear equalizer (CTLE) in the MAX3987ETM+T applies a frequency-dependent gain boost to received serial signals, amplifying high-frequency content attenuated by FR4 PCB trace losses at 8.5 Gbps. Typical FR4 traces experience 1 dB to 3 dB per inch of loss at multi-gigabit frequencies; the MAX3987 CTLE compensates several decibels of this loss, restoring eye opening to acceptable levels for downstream data recovery without requiring active clock-and-data recovery (CDR) circuitry.
What package does the MAX3987ETM+T use and what are the key thermal and assembly considerations?
The MAX3987ETM+T is housed in a 48-pin LFCSP (7x7x0.75 mm) package with an exposed thermal pad on the underside. The thin 0.75 mm body reduces height in board stacks, while the thermal pad must be soldered to a PCB ground plane thermal via array to dissipate heat from 4 active channels operating at 8.5 Gbps. The peak reflow temperature is 260°C, consistent with standard lead-free IPC/JEDEC J-STD-020 assembly processes.
When is the MAX3987ETM+T a better choice than a passive equalization network for a 10GbE backplane link?
A passive equalization network is practical only for short FR4 traces below about 10 cm at 8.5 Gbps, where insertion loss is modest. For backplane traces of 30 cm to 60 cm or passive cable runs exceeding 1 meter, the accumulated loss exceeds what a passive RC network can correct while maintaining acceptable eye margin. The MAX3987ETM+T's active CTLE and programmable pre-emphasis recover several decibels of loss and add output boost, extending the effective channel reach without requiring active CDR or serializer-deserializer retiming, which would introduce latency and cost.
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Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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