SN74LVC157APWRG4

Overview

The SN74LVC157APWRG4 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 four independent multiplexers with a common strobe input (active low) and a single address select input. It is housed in a 16-pin TSSOP package.

Feature Summary

• Operates within a wide supply voltage range of 1.65V to 3.6V
• Features 5.5V tolerant inputs for interfacing with 5V logic devices
• Includes a common active-low output strobe control
• Provides high electrostatic discharge protection

Applications

• Translating data 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 'G4' corresponds to the desired RoHS-compliant variant and lead finish. Confirm the package type matches the design requirements, as this part number specifies the TSSOP-16 configuration. Ensure the operating temperature range aligns with the application environment specifications.

Selection Notes

Select this component when a quad 2-to-1 multiplexer is required with 5.5V input tolerance. It is suitable for designs needing to bridge 3.3V and 5V logic domains without external level shifters. Consider the TSSOP package constraints and thermal characteristics during PCB layout planning.

Part Context

This device belongs to the SNx4LVC157A family of quadruple 2-line to 1-line data selectors. The family offers various package options including SOIC, SSOP, SOP, WQFN, and VQFN. The 'SN74' prefix indicates commercial grade availability, while the 'LVC' series denotes low-voltage CMOS technology optimized for 1.65V to 3.6V operation.

Replacement Considerations

SN74LVC157ADRG4

FAQ

How does the device handle unused inputs?

All unused inputs must be connected to either VCC or GND to prevent undefined operational states caused by floating voltages.

What is the function of the G pin?

The G pin is an active-low output strobe. When G is high, all outputs are forced low; when G is low, the selected data is routed to the outputs.