SN74LVC157APWRE4

Overview

The SN74LVC157APWRE4 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 accepts input voltages up to 5.5V, enabling direct interfacing with 3.3V or 5V devices in mixed-signal systems. The device features a common strobe (G) input that forces all outputs low when high. It provides true non-inverted data routing based on the address select input (A/B). Key electrical specifications include a maximum propagation delay of 5.2ns at 3.3V and ESD protection exceeding 2000V via the human-body model.

Feature Summary

• Operates within a wide supply voltage range of 1.65V to 3.6V
• Inputs accept voltages up to 5.5V for compatibility with higher logic levels
• Features a common active-low strobe input to control output states
• Provides robust electrostatic discharge protection

Applications

• Mixed 3.3V/5V system environments requiring level translation
• Routing data between two groups of registers to four common output buses
• Implementing irregular logic functions as a function generator

Procurement Notes

Verify the specific ordering suffix 'E4' corresponds to the intended RoHS-compliant variant and lead finish details listed in the TI Package Option Addendum. Confirm the TSSOP-16 package dimensions and thermal resistance values match your PCB layout requirements. Ensure the operating temperature range aligns with your application's environmental constraints.

Selection Notes

Select this component when a quadruple multiplexer with 5.5V tolerant inputs is required for low-voltage CMOS applications. Consider the TSSOP-16 package if space-constrained surface-mount assembly is necessary. Evaluate the propagation delay specifications against your system timing requirements to ensure signal integrity across the selected supply voltage.

Part Context

This part belongs to the SNx4LVC157A family of quadruple 2-line to 1-line data selectors/multiplexers. The family includes variants with different packaging options such as SOIC, SSOP, SOP, WQFN, and VQFN. All members share the same logical functionality and electrical characteristics defined by the LVC logic series, differing primarily in physical form factor and thermal properties.

Replacement Considerations

SN74LVC157ADBR

FAQ

How does the common strobe input affect the outputs?

When the common strobe (G) input is high, all outputs are forced low regardless of other input conditions. When G is low, the device selects data from the A or B sources based on the address select input.

Can this device interface directly with 5V logic?

Yes, the inputs accept voltages up to 5.5V, allowing the device to be driven by 3.3V or 5V devices without additional level shifting components.