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DS25BR400 - Quad Transceiver

Datasheet Summary

Description

The DS25BR400 is a quad 250 Mbps

2.5 Gbps CML transceiver, or 8-channel buffer, for use in XAUI Fibre Channel backplane and cable applications.

With operation down to 250 Mbps, the DS25BR400 can be used in applications requiring both low and high frequency data rates.

Features

  • n Quad 2.5 Gbps Transceiver or 8-Channel CML Serial Buffer n 250 Mbps.
  • 2.5 Gbps Fully Differential Data Paths n Optional Fixed Input Equalization n Selectable Output De-emphasis n Individual Loopback Controls n On-chip Termination n +3.3V supply n Low Power, 1.3 Watts MAX n Lead-less eLLP-60 pin package (9mmx9mmx0.8mm, 0.4mm pitch) n.
  • 40˚C to +85˚C Industrial Temperature Range n 6 kV ESD Rating, HBM Functional Block Diagram 20194201 © 2006 National Semiconductor Corporation.

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DS25BR400 Quad Transceiver with Input Equalization and Output De-Emphasis May 2006 DS25BR400 Quad Transceiver with Input Equalization and Output De-Emphasis General Description The DS25BR400 is a quad 250 Mbps – 2.5 Gbps CML transceiver, or 8-channel buffer, for use in XAUI Fibre Channel backplane and cable applications. With operation down to 250 Mbps, the DS25BR400 can be used in applications requiring both low and high frequency data rates. Each input stage has a fixed equalizer to reduce ISI distortion from board traces. The equalizers are grouped in fours and are enabled through two control pins. These control pins provide customers flexibility in XAUI applications where ISI distortion may vary from one direction to another.
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