SN74LVC157APWT

Overview

The SN74LVC157APWT is a quadruple 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It operates from a supply voltage of 1.65V to 3.6V and features inputs that accept voltages up to 5.5V, enabling translation in mixed 3.3V/5V systems. The device provides true (non-inverted) outputs controlled by a common strobe input. It is housed in a 16-pin TSSOP package with a tape-and-reel carrier containing 250 units. Maximum propagation delay is specified at 5.2ns at 3.3V.

Feature Summary

• Operates within a wide supply voltage range of 1.65V to 3.6V
• Provides 5.5V tolerant inputs for interfacing with higher voltage logic
• Features low output ground bounce typical performance
• Includes high electrostatic discharge protection ratings

Applications

• Translating signals between mixed 3.3V and 5V system environments
• Routing data from two sources to four common output buses
• Implementing highly irregular logic functions using two variables

Procurement Notes

Verify the specific ordering suffix 'T' confirms the 250-unit small tape-and-reel packaging configuration. Confirm the active production status and RoHS compliance details via the manufacturer's official documentation before finalizing procurement specifications.

Selection Notes

Select this component when a quadruple multiplexer with 5.5V tolerant inputs is required for low-voltage CMOS applications. Ensure the design accommodates the 1.65V to 3.6V operating range and utilizes the 16-pin TSSOP package constraints for thermal and physical layout requirements.

Part Context

This part belongs to the SNx4LVC157A family of quadruple 2-line to 1-line data selectors. The family includes variants with different packages such as SOIC, SSOP, and VQFN, and options like the automotive-grade SN74LVC157A-Q1. The APWT variant specifically denotes the TSSOP package with small tape-and-reel shipping.

Replacement Considerations

SN74LVC157ADBR

FAQ

How does the enable input function?

The output strobe input (G) is active low. When G is high, all outputs are forced low regardless of other inputs. When G is low, the selected data is routed to the outputs.

What is the maximum propagation delay?

The maximum propagation delay is 5.2ns at a supply voltage of 3.3V.