INTRODUCTION
The UT54LVDM228 is a quad 2x2 crosspoint switch utilizing Low Voltage Differential Signaling (LVDS) technology for low power, high speed operation. Data paths are fully differential from input to output for low noise generation and low pulse width distortion. The non-blocking design allows connection of any input to any output or outputs on each switch. LVDS I/O enable high speed data transmission for point-to point or multidrop interconnects. This device can be used as a high speed differential crosspoint, 2:1 mux, 1:2 demux, repeater or 1:2 signal splitter. The mux and demux functions are useful for switching between primary and backup circuits in fault tolerant systems. The 1:2 signal splitter and 2:1 mux functions are useful for distribution of a bus across several rack-mounted backplanes.

FEATURES
❐ 400.0 Mbps low jitter fully differential data path
❐ 200MHz clock channel
❐ 3.3 V power supply
❐ 10mA LVDS output drivers
❐ Input receiver fail-safe
❐ Cold sparing all pins
❐ Output channel-to-channel skew is 120ps max
❐ Configurable as quad 2:1 mux, 1:2 demux, repeater or1:2 signal splitter
❐ Fast propagation delay of 3.5ns max
❐ Receiver input threshold < + 100 mV
❐ Radiation-hardened design; total dose irradiation testing to MIL-STD-883 Method 1019
   - Total-dose: 300 krad(Si) and 1 Mrad(Si)
   - Latchup immune (LET > 100 MeV-cm2/mg)
❐ Packaging options:
   - 64-lead flatpack
❐ Standard Microcircuit Drawing 5962-01537
   - QML Q and V compliant part
❐ Compatible with ANSI/TIA/EIA 644-1995 LVDS Standard