SN74LV157APWT

Overview

The SN74LV157APWT is a quadruple 2-line to 1-line data selector/multiplexer from Texas Instruments, housed in a 16-pin TSSOP package. It operates within a supply voltage range of 2 V to 5.5 V and accepts input voltages up to 5.5 V. The device features a maximum propagation delay of 7.5 ns at 5 V and includes an active-low output strobe (G) input. Electrical characteristics specify a typical low-level output current of 12 mA at 5 V and high-level output current of -12 mA at 5 V.

Feature Summary

• Supports wide supply voltage operation from 2 V to 5.5 V
• Provides full data selection for four independent channels
• Includes active-low output strobe control
• Accepts 5.5 V input signals regardless of supply voltage

Applications

• Servers
• LED Displays
• Network Switches
• Telecom Infrastructure
• Motor Drivers

Procurement Notes

Verify the specific ordering suffix 'PW' confirms the TSSOP-16 package type. Confirm RoHS compliance status and lead finish details via the manufacturer's orderable addendum. Ensure the component status is listed as Active Production rather than Obsolete or Preproduction before finalizing procurement plans.

Selection Notes

Select this component when a quadruple multiplexer with 5.5 V tolerant inputs is required for systems operating between 2 V and 5.5 V. Consider the 7.5 ns maximum propagation delay at 5 V for timing constraints. Verify that the TSSOP-16 package dimensions fit the available PCB real estate compared to SOIC or SSOP alternatives.

Part Context

This part belongs to the SN74LV157A family of logic ICs designed for low-voltage CMOS applications. The 'LV' series indicates compatibility with 3.3 V and 5 V systems while maintaining robust noise immunity. The device functions as a standard data selector, routing one of two data sources to four outputs based on address select lines.

Replacement Considerations

SN74LV157ADBR

FAQ

What is the function of the G pin?

The G pin serves as an active-low output strobe. When G is low, the selected data is passed to the outputs; when G is high, the outputs are disabled.

Can the inputs tolerate 5.5 V if VCC is lower?

Yes, the inputs accept voltages up to 5.5 V independently of the VCC supply voltage, which can be as low as 2 V.