SY88432LMG Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
SY88432LMG is a 3.3 V optical transceiver IC from Microchip integrating a limiting post-amplifier and laser diode driver supporting data rates up to 4.25 Gbps, designed for SDH and SONET fiber optic systems. Packaged in a 24-pin VQFN, it delivers a compact single-chip solution for optical module transmitter and receiver signal conditioning.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- SY88432LMG Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.8070(MOQ 40)
- 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 SY88432LMG?
- Integrated limiting post-amplifier and laser diode driver
- Supports data rates up to 4.25 Gbps
- 3.3 V single-supply operation
- Optimized for SDH and SONET optical transceiver applications
- 24-pin VQFN package with exposed heat slug for thermal management
- Differential CML I/O for low-noise high-speed signal integrity
What is SY88432LMG used for?
The SY88432LMG is used in fiber optic transceiver modules for SDH/SONET telecom equipment, including OC-12 (622 Mbps), OC-48 (2.5 Gbps), and OC-96 (4.25 Gbps) line cards in metro and long-haul optical networks. It also suits Fibre Channel storage area network (SAN) modules and DWDM transponders where a compact single-chip front-end integrating both the laser driver and received signal amplifier is required.
What are the specifications of SY88432LMG?
| Manufacturer Package Code | VQFN-24 |
| YTEOL | 0 |
| Applications | SDH; SONET |
| JESD-30 Code | S-XQCC-N24 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC24,.16SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Supply Current-Max | 130mA |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Telecom IC Type | ATM/SONET/SDH SUPPORT CIRCUIT |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the SY88432LMG datasheet?
SY88432LMG Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for SY88432LMG?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the SY88432LMG achieve 4.25 Gbps operation while limiting power consumption?
The SY88432LMG operates from a single 3.3 V supply and uses current-mode logic (CML) differential I/O to achieve 4.25 Gbps data rates with minimal power dissipation. The integrated limiting post-amplifier restores degraded received optical signals to full swing, while the laser driver controls modulation current precisely, reducing the number of external components and lowering total module power compared to discrete implementations.
Which SONET/SDH line rates does the SY88432LMG support and how does this match common network deployments?
The SY88432LMG supports serial data rates up to 4.25 Gbps, covering SONET OC-3 (155 Mbps), OC-12 (622 Mbps), OC-48 (2.5 Gbps), and OC-96 (4.25 Gbps) standards. This range encompasses the majority of deployed SDH STM-1 through STM-64 metropolitan and long-haul links, making the device suitable for multi-rate transceivers that must interoperate across different network tiers without hardware changes.
How does the exposed heat slug in the VQFN-24 package benefit thermal management in a dense optical module?
The 24-pin VQFN package includes an exposed metal slug on the bottom that conducts heat directly to the PCB copper pour, providing a thermal resistance significantly lower than standard QFP packages. In optical transceiver modules where multiple high-speed ICs are packed into a few square centimeters, this feature keeps junction temperature well below the 125°C maximum even at 4.25 Gbps full-rate operation, extending component lifetime.
Can the SY88432LMG be used in Fibre Channel SAN modules in addition to SONET systems?
Yes, the SY88432LMG supports 4.25 Gbps, which aligns with 4G Fibre Channel (4GFC) operating at approximately 4.25 Gbps line rate used in storage area networks. The device's differential CML interface, 3.3 V supply, and integrated laser driver and post-amplifier make it a drop-in solution for SFP and SFP+ module designs supporting both SONET OC-96 and 4GFC standards within the same hardware platform.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 40+ | $7.8070 | $312.28 |
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