SN74LS253DR

Overview

The SN74LS253DR is a dual 4-input multiplexer manufactured by Texas Instruments, belonging to the SN54/74LS series. It features two independent 4-to-1 data selectors housed in a 16-pin SOIC package. The device operates on a single power supply with a voltage range of 4.75V to 5.25V. It supports surface-mount installation and functions within an operating temperature range of 0°C to 70°C. The output current capabilities are specified at 8mA for low state and 2.6mA for high state.

Feature Summary

• Integrates two independent 4-to-1 multiplexers within a single integrated circuit
• Provides selectable data routing through dedicated address inputs for each channel
• Supports standard TTL logic levels compatible with LS family devices

Applications

• Data routing in digital communication systems
• Address decoding circuits
• Signal selection in microprocessor interfaces

Procurement Notes

Verify the specific ordering suffix 'DR' confirms the tape-and-reel packaging format and SOIC-16 surface mount package type. Ensure compatibility with 5V logic families when integrating into existing designs. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process before finalizing procurement.

Selection Notes

Select this component when dual independent 4-channel signal switching is required in a compact surface-mount footprint. Consider the LS series propagation characteristics and drive strength relative to system timing constraints. Evaluate thermal performance within the specified industrial temperature range during design integration.

Part Context

This part belongs to the widely adopted SN54/74LS (Low-power Schottky) logic family, known for balanced speed and power consumption. The SN74LS253 specifically addresses applications requiring multiple independent data paths without consuming excessive board space compared to discrete solutions.

Replacement Considerations

Public confirmed substitute part numbers include SN74LS253DRE4 and SN74LS253DRG4.