1FEATURES

2• DC - 125 MHz / 250 Mbps Low Jitter, Low

Skew, Low Power Operation

• Independent Driver Enable Pins

• Outputs Conform to TIA/EIA-899 M-LVDS

Standard

• Controlled Transition Times Minimize

Reflections

• Inputs Conform to TIA/EIA-644-A LVDS multiStandard

• 8 kV ESD on M-LVDS Output Pins Protects

Adjoining Components

• Flow-Through Pinout Simplifies PCB Layout

• Industrial Operating Temperature Range

(−40°C to +85°C)

• Available in a Space Saving SOIC-16 Package

APPLICATIONS

• Multidrop / Multipoint Clock and Data

Distribution

• High-Speed, Low Power, Short-Reach

Alternative to TIA/EIA-485/422

• Clock Distribution in AdvancedTCA (ATCA)

and MicroTCA (μTCA, uTCA) Backplanes

DESCRIPTION

The DS91M125 is a 1:4 M-LVDS repeater designed

for driving and distributing clock or data signals to up

to four multipoint networks.

M-LVDS (Multipoint LVDS) is a new family of bus

interface devices based on LVDS technology specifically designed for multipoint and multidrop

cable and backplane applications. It differs from

standard LVDS in providing increased drive current

handle double terminations that are required in multiStandard

point applications. Controlled transition times

minimize reflections that are common in multipoint

configurations due to unterminated stubs.

A single DS91M125 channel is a 1:4 repeater that accepts M-LVDS/LVDS/CML/LVPECL signals and

converts them to M-LVDS signal levels. Each output

has an associated independent driver enable pin. The

DS91M125 input conforms to the LVDS standard.

The DS91M125 has a flow-through pinout for easy

PCB layout. It provides a new alternative for high

speed multipoint interface applications. It is packaged

in a space saving SOIC-16 package.