SN74LS253D

Overview

The SN74LS253D is a dual 4-line-to-1-line data selector/multiplexer manufactured by Texas Instruments in the 74LS logic series. It integrates two independent multiplexers within a single 16-pin SOIC package, enabling efficient routing of digital signals. The device operates on a single power supply ranging from 4.75V to 5.25V and supports surface-mount installation. Designed for industrial temperature ranges between 0°C and 70°C, it provides complementary outputs for each multiplexer channel, facilitating flexible logic interfacing in standard TTL environments.

Feature Summary

• Integrates two independent 4-to-1 multiplexers in a compact surface-mount package
• Provides complementary output signals for each multiplexer channel
• Utilizes Low Power Schottky (LSTTL) technology for high-speed operation
• Supports single-supply operation within standard TTL voltage limits

Applications

• Data routing in digital communication systems
• Address decoding in microprocessor-based designs
• Signal selection in test and measurement equipment
• Logic function generation in industrial control circuits

Procurement Notes

Verify the specific suffix 'D' confirms the 16-SOIC surface-mount package variant. Confirm RoHS3 compliance status as per current manufacturer documentation. Ensure the ordering part number matches the exact pinout and electrical specifications required for the target application circuit design.

Selection Notes

Select this component when dual independent 4-to-1 signal routing is required in a space-constrained surface-mount layout. Compare against the SN74LS251 if an 8-input single-channel configuration is needed instead. Verify that the LSTTL speed and drive capabilities meet the system timing requirements without excessive power consumption.

Part Context

This device belongs to the Texas Instruments 74LS family of logic integrated circuits. It serves as a signal switching component within broader digital logic systems. The SN74LS253D complements other multiplexers and decoders in the same series, providing standardized interface solutions for legacy and modern mixed-signal electronic designs requiring reliable data path management.

Replacement Considerations

SN74LS253DR: Manufacturer-recommended tape-and-reel variant with identical electrical characteristics and pinout.