SN55138 Datasheet (Texas Instruments) - QUADRUPLE BUS TRANSCEIVERS

SN55138, QUADRUPLE BUS TRANSCEIVERS

The SN55138 and SN75138 quadruple bus transceivers are designed for two-way data communication over single-ended transmission lines.

Each of the four identical channels consists of a driver with TTL inputs and a receiver with a TTL output.

The driver open-collector output is designed to handle loads

SN55138, SN75138 QUADRUPLE BUS TRANSCEIVERS SLLS079B SEPTEMBER 1973 REVISED MAY 1995 D Single 5-V Supply D High-Input-Impedance, High-Threshold Receivers D Common Driver Strobe D TTL-Compatible Driver and Strobe Inputs With Clamp Diodes D High-Speed Operation D 100-mA Open-Collector Driver Outputs D Four Independent Channels D TTL-Compatible Receiver Output SN55138 .

J OR W PACKAGE SN75138 .

D OR N PACKAGE (TOP VIEW) GND 1 1B 2 1R 3 1D 4 2D 5 2R 6 2B 7 GND 8 16 V

SN55138 Features

* a threshold of 2.3 V (typical), providing a wider noise margin than would be possible with a receiver having the usual TTL threshold. A strobe turns off all drivers (high impedance) but does not affect receiver operation. These circuits are designed for operation from a single 5-V supply and include