74157 LOGIC GATE

74157 Quad 2-to-1 Data Selector/Multiplexer PDIP-16

The 74157 Quad 2-to-1 Data Selector/Multiplexer PDIP-16 is a high-speed, low-power Schottky TTL quad multiplexer provided in a PDIP-16 through-hole package, designed to select a four-bit word from one of two sources using a single common select input and an active-low enable (strobe) for bus, address and data-selection applications.

74LS157 is a 2-input (2:1) Multiplexer IC. It has four similar multiplexers inside it and hence it is called a Quad package 2-Input Multiplexer. A Multiplexer as we know takes in 2 or more inputs and provides one of them as the output based on the Select line status.

Features

• Four independent 2-to-1 data selectors with buffered non-inverting outputs suitable for true data routing applications.

• Single common Select input for simultaneous channel selection across all four channels.

• Active-low enable (strobe) to place all outputs in the high-impedance state for bus sharing and multiplexed systems.

• Low-power Schottky (LS) TTL technology with standard 5V supply compatibility.

• Industry standard PDIP-16 footprint for easy through-hole prototyping and retrofit replacement.

PINOUT

Specifications

Absolute Maximum Ratings

Note 1: Voltage values are with respect to network ground terminal.

Recommended Operating Conditions

Complete technical details can be found in the 74HC157 datasheet given at the end of this page.

Applications

• Multiplexing and selection of 4-bit data or address buses in microprocessor systems.

• Bus isolation and sharing where multiple devices drive a common bus.

• Glue logic and combinational data routing in digital control systems.

• Memory and peripheral address/data selection.

• Prototyping and educational digital logic projects where an industry-standard PDIP is required