DS320PR822NJXR

Overview

The DS320PR822NJXR is an eight-channel linear redriver supporting PCIe 5.0, CXL 2.0, and UPI 2.0 at data rates up to 32 Gbps. It features four 2x2 crosspoint mux functions and a CTLE with boost up to 22 dB at 16 GHz. The device operates on a single 3.3 V supply with low active power of 160 mW per channel. Key electrical parameters include ultra-low latency of 100 ps, additive random jitter of 75 fs for PRBS data, and excellent return loss of −10 dB at 16 GHz. It supports x2, x4, x8, x16, and x24 bus widths within a 5.5 mm × 10 mm, 64-pin WQFN package.

Feature Summary

• Supports PCIe 5.0, CXL 2.0, and UPI 2.0 protocols up to 32 Gbps
• Integrates four 2x2 crosspoint mux functionality for flexible signal routing
• Provides programmable high-frequency boost via continuous time linear equalizers (CTLE)
• Features internal voltage regulator for immunity to supply noise

Applications

• Rack server, microserver, and tower server interconnects
• High performance computing systems
• Hardware accelerator cards
• Network attached storage and storage area network host bus adapter cards
• Network interface cards and desktop PC motherboards

Procurement Notes

Verify the ordering suffix NJXR against the manufacturer's official orderable addendum to confirm tape-and-reel packaging specifications. Ensure the component matches the specific pin configuration and thermal requirements for your PCB layout. Cross-reference the datasheet revision history to confirm compatibility with your design timeline.

Selection Notes

Select this component when designing for PCIe 5.0 or CXL 2.0 environments requiring low latency and minimal signal degradation. The integrated crosspoint mux allows for flexible lane mapping without external switching components. Consider the 64-pin WQFN package size and thermal dissipation characteristics during the mechanical design phase.

Part Context

The DS320PR822 belongs to Texas Instruments' DS320PR series of linear redrivers designed for high-speed serial interfaces. This specific model provides eight independent channels with integrated signal conditioning. It is engineered to act as a transparent element in the link training process, preserving transmit preset signal characteristics while compensating for inter-symbol interference.

Replacement Considerations

Consult the manufacturer's product migration guide for verified substitute part numbers. Ensure any replacement maintains the same 32 Gbps data rate capability, 64-pin WQFN footprint, and PCIe 5.0/CXL 2.0 protocol support.