DS3487 Quad TRI-STATE Line Driver
May 1998
DS3487 Quad TRI-STATE ® Line Driver
General Description
National’s quad RS-422 driver features four independent drivers which comply with EIA Standards for the electrical characteristics of balanced voltage digital interface circuits.
The outputs are TRI-STATE structures which are forced to a high impedance state when the appropriate output control pin reaches a logic zero condition.
All input pins are
PNP buffered to minimize input loading for either logic one or logic zero inputs.
Features
n n n n n n n Four independent drivers TRI-STATE ® outputs Fast propagation times (typ 10 ns) TTL compatible 5V supply Output rise and fall times less than 1...