DS25CP104TSQ/NOPB

Overview

The DS25CP104TSQ/NOPB is a 3.125 Gbps 4x4 LVDS digital crosspoint switch designed for high-speed signal routing over lossy FR-4 backplanes and balanced cables. It features fully differential signal paths with non-blocking architecture, allowing any input to connect to any output. The device supports wide input common mode ranges for LVDS, CML, and LVPECL signals, while outputs are LVDS. Configuration is achieved via external pins or the SMBus interface, which enables four levels of transmit pre-emphasis and receive equalization. Internal 100Ω termination minimizes insertion losses.

Feature Summary

• Non-blocking 4x4 architecture allows flexible signal routing between inputs and outputs
• Configurable transmit pre-emphasis and receive equalization to mitigate ISI jitter
• Wide input common mode range accommodates LVDS, CML, and LVPECL drivers
• Integrated LOS circuitry detects open input fault conditions

Applications

• SD/HD/3GHD SDI Routers
• OC-48 / STM-16 systems
• Fibre Channel (2GFC)
• InfiniBand and FireWire interfaces

Procurement Notes

Verify the manufacturer origin as National Semiconductor was acquired by Texas Instruments; confirm the specific suffix matches the LLP-40 package variant. Ensure the SMBus address configuration aligns with system requirements. Check humidity sensitivity handling during storage and assembly. Validate that the operating temperature range meets environmental specifications.

Selection Notes

Select this component when low jitter and skew are critical for signal integrity in high-speed routing applications. The LLP-40 package offers space savings compared to larger footprints. Consider the SMBus capability if dynamic reconfiguration or remote monitoring of signal loss is required. Verify power consumption limits against available supply rails.

Part Context

This part belongs to the DS25CP104 series of analog and digital crosspoint ICs. It is optimized for high-speed data transmission where signal degradation over PCB traces is a concern. The device integrates control logic for both pin-based and serial bus configurations, providing flexibility in system design without requiring additional external multiplexers.

Replacement Considerations

DS25CP114TSQ/NOPB