SN75LVPE5421
- Quad channel PCIe 5.0 linear redriver or repeater with integrated 2:1 multiplexer
- Protocol agnostic linear redriver compatible to 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 55 fs 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
- 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 device
- Available companion demultiplexer product SN75LVPE5412
- -40°C to 85°C temperature range
- 3.5 × 9mm 42 Pin 0.5mm pitch WQFN package
The SN75LVPE5421 is a four channel linear redriver with integrated multiplexer (mux). The low-power high-performance linear redriver is designed to support PCIe 5.0 and other interfaces up to 32Gbps.
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 along with the passive channel in between a Root Complex (RC) and Endpoint (EP) as a whole get trained for best transmit and receive equalization settings resulting in the best electrical link. Low channel to channel cross-talk, low additive jitter and excellent return loss allows the device to become almost a passive element in the link. The devices has internal linear voltage regulator to provide clean power supply for high speed data paths that provides high immunity to any supply noise on the board.
The SN75LVPE5421 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.

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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | SN75LVPE5421 PCIe 5.0 32Gbps 4-Channel Linear Redriver with 2:1 Mux datasheet (Rev. B) | PDF | HTML | 20 Dec 2023 |
Application note | How to Tune TI PCIe Gen5 Redrivers (Rev. A) | PDF | HTML | 30 Dec 2024 | |
Application note | Understanding TI PCIe Redriver Equalization | PDF | HTML | 02 Jul 2024 | |
Application note | High-Speed PCB Layout for PCIe Gen 5 | PDF | HTML | 20 Jun 2023 | |
Application note | PCI Express Compliance Testing with the DS320PR810 | PDF | HTML | 16 Dec 2022 | |
Application brief | Implementing the PCIe Design with Signal Conditioning Devices | PDF | HTML | 07 Dec 2021 | |
User guide | DS320PR4xxEVM User's Guide | PDF | HTML | 30 Nov 2021 | |
Certificate | DS320PR412-421EVM EU Declaration of Conformity (DoC) | 23 Apr 2021 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
DS320PR412-421EVM — DS320PR412, DS320PR421, SN75LVPE5412 and SN75LVPE5421 Quad-channel PCI-Express® 5.0 Mux/Demux linear
SIGCONARCHITECT3-WRTE — Texas Instruments SigCon Architect EVM GUI v3 Setup with RTE
Supported products & hardware
Products
Ethernet retimers, redrivers & mux-buffers
PCIe, SAS & SATA ICs
Hardware development
Evaluation board
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
WQFN (RUA) | 42 | Ultra Librarian |
Ordering & quality
- RoHS
- REACH
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- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
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