SN74HC157APWR

Overview

The SN74HC157APWR is a quad 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and features low power consumption with an 80µA maximum leakage current. The device provides true data outputs capable of driving up to 15 LSTTL loads, offering ±6mA output drive at 5V. Typical propagation delay is 11ns, with a maximum clock frequency of 28MHz. It is housed in a 16-TSSOP package and supports surface-mount installation.

Feature Summary

• Provides four independent 2-to-1 multiplexing channels for routing digital signals
• Operates across a wide supply voltage range from 2V to 6V
• Features low power consumption with minimal input leakage current
• Outputs are compatible with standard logic families including LSTTL

Applications

• Data routing in digital communication systems
• Signal selection in microcontroller peripheral interfaces
• Address decoding and bus switching applications
• General-purpose digital logic signal multiplexing

Procurement Notes

Verify the specific suffix 'APWR' against the manufacturer's official datasheet to confirm package type, tape-and-reel specifications, and RoHS compliance status. Ensure the ordering part number matches the exact pinout and electrical characteristics required for the target design. Cross-reference with authorized distributors to confirm current availability and authenticity.

Selection Notes

Select this component when a quad 2:1 multiplexer is required with HC logic speed and voltage compatibility. It is suitable for designs needing low power dissipation and robust output drive capabilities. Consider alternative packages if through-hole mounting is preferred or if higher speed AHC series performance is necessary for faster signal paths.

Part Context

This device belongs to the SN74HC157 family of high-speed CMOS logic devices. It functions as a quadruple 2-input multiplexer with common select and strobe inputs. The HC series is known for its compatibility with standard TTL logic levels while offering improved speed and lower power consumption compared to older NMOS technologies.

Replacement Considerations

Compatible substitutes include SN74HC157N (DIP package) and SN74HC157PW (tube packaging). For automotive applications, consider the SN74HC157QPWRQ1 variant. Verify that any replacement maintains the same 16-pin TSSOP footprint and electrical parameters.