Product Summary

The DS3662 is a quad high speed Schottky bus transceiver
intended for use with terminated 120?impedance lines. It is
specifically designed to reduce noise in unbalanced transmission systems. The open collector drivers generate precise trapezoidal waveforms with rise and fall times of 15 ns
(typical), which are relatively independent of capacitive loading conditions on the outputs. This reduces noise coupling to
the adjacent lines without any appreciable impact on the
maximum data rate obtainable with high speed bus transceivers. In addition, the receivers use a low pass filter in conjunction with a high speed comparator, to further enhance
the noise immunity. Tightly controlled threshold levels on the
receiver provide equal rejection to both negative and positive
going noise pulses on the bus

Features

 Pin to pin functional replacement for DS8641
n Guaranteed AC specifications on noise immunity and
propagation delay over the specified temperature and
supply voltage range
n Temperature insensitive receiver thresholds track bus
logic level
n Trapezoidal bus waveforms reduce noise coupling to
adjacent lines
n Precision receiver thresholds provide maximum noise
immunity and symmetrical response to positive and
negative going pulses
n Open collector driver output allows wire-OR connection
n High speed Schottky technology
n 15 μA typical bus termination current with normal VCCor
with VCC
=0V
n Glitch free power up/down protection on the driver
output
n TTL compatible driver and disable inputs, and receiver
outputs