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74LS243 3-State Quad Bus Transceiver IC (74243) DIP-14 Package

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Description

The 74LS243 is a quad 3-state bus transceiver IC from the 74LS logic family, designed for bidirectional data transmission between two bus lines. It features four independent bus transceivers, each capable of driving data in either direction, controlled by enable and direction pins. The 3-state outputs allow the bus to be shared by multiple devices, making it ideal for use in bus-oriented systems.

Specifications

  • Logic Family: 74LS (Low Power Schottky)
  • Package Type: DIP-14 (Dual In-Line Package with 14 pins)
  • Supply Voltage (Vcc): 4.75V to 5.25V
  • Output Type: Tri-state TTL
  • Input Levels:
    • Low: Max 0.8V
    • High: Min 2.0V
  • Output Levels:
    • Low: Max 0.4V
    • High: Min 2.7V
  • Propagation Delay: Typically 10 ns
  • Power Dissipation: Typically 32 mW per gate
  • Operating Temperature: 0°C to 70°C

Features

  • Bidirectional Data Flow: Allows data to flow in both directions between two buses, controlled by the direction (DIR) pin.
  • 3-State Outputs: The outputs can be placed in a high-impedance state by using the output enable (OE*) pin, allowing multiple devices to share the same bus without interference.
  • TTL-Compatible Inputs/Outputs: Ensures compatibility with other TTL devices in a digital circuit.
  • Low Power Consumption: Built with Schottky technology, reducing power consumption compared to standard TTL devices.
  • Individual Data Lines: Supports independent data transmission across four lines simultaneously.

Note

* Product Images are shown for illustrative purposes only and may differ from actual product

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