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.