SN74HC157PW

Overview

The SN74HC157PW is a quadruple 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and supports an operating temperature from -40°C to 85°C. The device features four independent multiplexers controlled by a common address select (A/B) input and a strobe (G) input. It utilizes a 16-pin TSSOP package with dimensions of 5.00 mm x 4.40 mm. Typical propagation delay is 11ns at 5V, with outputs capable of driving up to 15 LSTTL loads.

Feature Summary

• Contains four independent 2-to-1 data selectors sharing a common address select input
• Features TTL-compatible CMOS inputs for direct interfacing with standard logic families
• Includes an active-low strobe input that forces all outputs low regardless of other states

Applications

• Multiplexing and routing 4-bit data buses between two source devices
• System controller interface applications requiring data selection
• General-purpose digital logic switching circuits

Procurement Notes

Verify the specific ordering suffix 'PW' corresponds to the TSSOP-16 package configuration required for your design. Confirm the operating temperature range matches your environmental specifications. Ensure unused inputs are terminated to VCC or GND to prevent oscillations and excessive power consumption during operation.

Selection Notes

Select this component when a quadruple 2-to-1 multiplexer function is required in a surface-mount TSSOP-16 footprint. It is suitable for designs needing TTL-compatible inputs and wide voltage operation between 2V and 6V. Consider thermal resistance values if high ambient temperatures are expected.

Part Context

This part belongs to the SNx4HC157 family of high-speed silicon gate CMOS multiplexers. The HC series provides standard CMOS inputs with reduced voltage thresholds for TTL compatibility. The PW suffix specifically denotes the Thin Shrink Small Outline Package (TSSOP) variant within the broader SN74HC157 product line.

Replacement Considerations

SN74HC157PWR is the reel-based equivalent of the tube-packaged SN74HC157PW.