SN74AS153NSR

Overview

The SN74AS153NSR is a dual 1-of-4 data selector/multiplexer from the AS logic series. It contains inverters and drivers to supply full binary decoding for AND-OR gates, featuring separate strobe inputs for each section. The device operates within a supply voltage range of 4.5 V to 5.5 V. High-level output current reaches -15 mA, while low-level output current reaches 48 mA. Propagation delays are specified between 2 ns and 12.5 ns depending on input-to-output path. Operating temperature ranges from 0 °C to 70 °C.

Feature Summary

• Contains two independent 4-line multiplexing sections with shared select lines
• Provides high drive capability with up to 48 mA low-level output current
• Includes dedicated strobe inputs for cascading or disabling specific sections

Applications

• Multiplexing multiple data sources into a single transmission line
• Parallel-to-serial data conversion in digital systems
• Cascading configurations for expanding n-lines to n-lines routing

Procurement Notes

Verify the package type matches the SOP (NS) designation for surface-mount assembly. Confirm RoHS compliance status as indicated in the packaging addendum. Ensure the operating environment stays within the 0 °C to 70 °C commercial temperature range. Check lead finish specifications against soldering process requirements.

Selection Notes

Select this component when high-speed switching and strong output drive are required compared to standard ALS variants. The AS series offers faster propagation delays than the SN74ALS153. Verify that the 48 mA sink capability meets load requirements. Ensure the design accommodates the higher power consumption typical of the AS logic family.

Part Context

This part belongs to the Texas Instruments SN74AS153 family of dual 4-input multiplexers. It is functionally compatible with other 74AS153 devices but distinguished by its SOP surface-mount package. The 'SR' suffix indicates tape-and-reel packaging for automated assembly processes.

Replacement Considerations

SN74ALS153NSR is an electrically similar alternative with lower drive strength and slower speeds.