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SN75138 - QUADRUPLE BUS TRANSCEIVERS

Description

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.

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 a provision to minimize loading of the data bus when the power-supply voltage is zero. The SN55138 is characterized for operation over the full military temperature range of.
  • 55°C to 125°C.

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Full PDF Text Transcription

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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 VCC 15 4B 14 4R 13 4D 12 S 11 3D 10 3R 9 3B description 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.
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