1FEATURES
2• DC - 125 MHz / 250 Mbps Low Jitter, Low
Skew, Low Power Operation
• Independent Driver Enable Pins
• Conforms to TIA/EIA-899 M-LVDS Standard
• Controlled Transition Times Minimize
Reflections
• 8 kV ESD on M-LVDS I/O 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) Backplanes

DESCRIPTION
The DS91M124 is a 1:4 M-LVDS repeater 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 to
handle double terminations that are required in multi•
point applications. Controlled transition times minimize reflections that are common in multipoint
configurations due to unterminated stubs.
A single DS91M124 channel is a 1:4 repeater that
accepts LVTTL/LVCMOS signals at the driver inputs
and converts them to differential M-LVDS signal
levels. It features independent driver enable pins for
each driver output.
The DS91M124 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.