DS91M047 Datasheet, PDF (1/12 Pages) National Semiconductor (TI) – 125 MHz Quad M-LVDS Line Driver

DS91M047
November 9, 2009
125 MHz Quad M-LVDS Line Driver
General Description
The DS91M047 is a high-speed quad M-LVDS line driver de-
signed for driving 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 cur-
rent to handle double terminations that are required in multi-
point applications. Controlled transition times minimize re-
flections that are common in multipoint configurations due to
unterminated stubs.
The DS91M047 accepts LVTTL/LVCMOS input levels and
translates them to M-LVDS signal levels with transition times
of greater than 1 ns. The device provides the DE and DE in-
puts that are ANDed together and control the TRI-STATE
outputs. The DE and DE inputs are common to all four drivers.
The DS91M047 has a flow-through pinout for easy PCB lay-
out. The DS91M047 provides a new alternative for high speed
multipoint interface applications. It is packaged in a space
saving SOIC-16 package.
Features
■ ^{DC - 125 MHz / 250 Mbps low jitter, low skew, low power}
operation
■ ^{Conforms to TIA/EIA-899 M-LVDS Standard}
■ ^{Controlled transition times (2 ns typ) minimize reflections}
■ ^{8 kV ESD on M-LVDS 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
Typical Application
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