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74LS253 3-State Dual 4-Input Multiplexer IC (74253) DIP-16 Package

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25 In stock

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Description

The 74LS253 is a dual 4-input multiplexer IC with 3-state (tri-state) outputs. It is designed for high-speed digital multiplexing, allowing the selection of one of four input data sources for each multiplexer, with outputs that can be disabled or placed in a high-impedance state to prevent interference on a shared data bus. This IC is part of the 74LS logic family and operates with low power Schottky technology, providing high-speed operation with lower power dissipation.

Specifications

  • Logic Family: 74LS (Low Power Schottky)
  • Package Type: DIP-16 (Dual In-Line Package with 16 pins)
  • Supply Voltage (Vcc): 4.75V to 5.25V
  • Input Voltage (VI):
    • Low: Max 0.8V
    • High: Min 2.0V
  • Output Voltage (VO):
    • Low: Max 0.4V
    • High: Min 2.7V
  • Multiplexed Inputs: Dual 4-input multiplexer
  • Output Type: 3-state TTL
  • Enable: Active-low enable for tri-state output control
  • Power Dissipation: Typically 35 mW per gate
  • Propagation Delay: Typically 15 ns
  • Operating Temperature: 0°C to 70°C

Features

  • Dual 4-to-1 Multiplexer: Consists of two independent 4-input multiplexers that can each select one of four data inputs to be output.
  • 3-State Outputs: Allows the outputs to be placed in high-impedance mode using the enable (E*) inputs, preventing bus contention when multiple devices share the same bus.
  • TTL-Compatible Inputs/Outputs: Compatible with other TTL devices, ensuring easy integration in digital systems.
  • Select Lines (S0, S1): These lines control which input (A, B, C, D) is selected for each multiplexer.
  • Enable Inputs (E1*, E2*): Active-low inputs that enable or disable the output for each multiplexer.
  • Low Power Consumption: Based on Low Power Schottky technology, offering reduced power consumption compared to standard TTL devices.

Note

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

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