SN74HC253ANSR

Overview

The SN74HC253ANSR is a dual 4-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features low input leakage current. The device utilizes SOIC-14 surface-mount packaging and supports TTL-compatible inputs. It includes independent output enable controls for each multiplexer section, allowing flexible data routing in digital logic applications.

Feature Summary

• Dual independent 4-to-1 multiplexer architecture
• TTL-compatible input interface
• Independent output enable control per channel

Applications

• Data routing in digital systems
• Signal selection circuits
• Address decoding applications

Procurement Notes

Verify the specific package variant and tape/reel specifications against the manufacturer's latest datasheet before procurement. Ensure that the operating voltage range aligns with the target system requirements. Confirm RoHS compliance status and check for any recent product lifecycle notifications or obsolescence warnings directly from Texas Instruments documentation.

Selection Notes

Select this component when dual independent 4-to-1 multiplexing is required with CMOS compatibility. Consider the SOIC-14 package for surface-mount assembly needs. Evaluate the propagation delay and output drive capabilities against the system timing constraints. Verify that the input voltage levels remain within the specified limits for reliable operation across the intended temperature range.

Part Context

This part belongs to the SN74HC series of high-speed CMOS logic devices. It provides multiplexing functionality within the broader family of Texas Instruments logic integrated circuits. The HC series is known for wide supply voltage operation and compatibility with standard logic families, making it suitable for various general-purpose digital design applications.

Replacement Considerations

Check for direct pin-compatible alternatives such as the SN74HC153 if single-chip quad 2-to-1 multiplexing is acceptable. Verify functional equivalence regarding output enable logic and propagation delays. Consult official substitution lists for any updated revisions or recommended replacements from the manufacturer.