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Texas Instruments SN75LVPE5421 Four-Channel Linear Redriver

Texas Instruments SN75LVPE5421 Four-Channel Linear Redriver is a low-power, high-performance linear redriver designed to support PCIe 5.0 and other interfaces up to 32Gbps. The device comes with an integrated demultiplexer (demux). The SN75LVPE5421 receivers deploy continuous-time linear equalizers (CTLE) to provide a high-frequency boost. The equalizer can open an input eye that is completely closed due to inter-symbol interference (ISI) induced by an interconnect medium, such as PCB traces and cables. During PCIe link training, the linear redriver and the passive channel between a Root Complex (RC) and Endpoint (EP) get trained for excellent transmit and receive equalization settings resulting in a tremendous electrical link. Low channel-to-channel cross-talk, low additive jitter, and incredible return loss allow the device to become almost a passive element in the link. The device has an internal linear voltage regulator to provide a clean power supply for high-speed data paths that offers high immunity to any supply noise on the board.

The Texas Instruments SN75LVPE5412 implements high-speed testing during production for reliable high-volume manufacturing. The device also has low AC and DC gain variation, providing consistent equalization in high volume platform deployment.

Features

Quad-channel PCIe 5.0 linear redriver or repeater with integrated 2:1 multiplexer
Protocol agnostic linear redriver compatible with PCIe, UPI, CCIX, NVLink, DisplayPort, SAS, SATA, and XFI
Single 3.3V supply – PCIe power rail can be used
Low 720mW active power for 4-channel operation
No heat sink required
Provides equalization up to 24dB at 16GHz
Excellent RX/TX differential RL of -10dB for 8-16GHz
Low additive RJ of 55fs RMS with PRBS data
Low latency of 90ps
Automatic receiver detection and seamless support for PCIe link training

Device configuration by pin control or SMBus / I²C
Mux selection through pin
The internal voltage regulator provides immunity to supply noise
High-speed production testing for reliable manufacturing
Support for x4, x8, and x16 bus width with one or multiple devices
Available companion demultiplexer product SN75LVPE5412
0°C to 85°C temperature range
3.5mm × 9mm 42-pin 0.5mm pitch WQFN package

Applications

Desktop PC and motherboard
Display panel, gaming console
A rack server, microserver, and tower server
High-performance computing, hardware accelerator

Data storage, network-attached storage
Storage area network (SAN) and host bus adapter (HBA) card
Network interface card (NIC)

Texas Instruments SN75LVPE5421 Four-Channel Linear Redriver

Features

Applications

Functional Block Diagram

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