DS250DF410

The Texas Instruments DS250DF410 is an active, quad-channel multi-rate retimer with integrated signal conditioning. It supports independent channel locking from 20.2752 to 25.8 Gbps, including sub-rates like 10.3125 Gbps and 12.5 Gbps.

This retimer offers ultra-low latency, typically less than 500 ps for a 25.78125-Gbps data rate. It features adaptive continuous time linear equalization (CTLE) and adaptive decision feedback equalization (DFE) to support channels with up to 35+ dB loss at 12.9 GHz. The device includes a low-jitter transmitter with a 3-Tap FIR filter and adjustable transmit amplitude from 205 mVppd to 1225 mVppd.

Designed for ease of board routing and reduced BOM cost, the DS250DF410 operates from a single power supply and does not require a low-jitter reference clock. It also includes an integrated 2x2 cross point, an on-chip eye opening monitor (EOM), and a PRBS pattern checker/generator. The device supports JTAG/AC-JTAG boundary scan and comes in a small 6 mm x 6 mm FCCSP package.

Key protocols supported include 100GbE, CDFP, CFP2/CFP4, IEEE802.3bj, Infiniband EDR, OIF-CEi-25G-LR/MR/SR/VSR, and QSFP28. The operating temperature range is -40°C to 85°C.