SN74LVC257AWBQBRQ1

Overview

The SN74LVC257AWBQBRQ1 is an automotive-grade quadruple 2-line to 1-line data selector/multiplexer with 3-state outputs. It operates from a supply voltage of 2V to 3.6V and accepts input voltages up to 5.5V, facilitating translation in mixed-voltage systems. The device features a maximum propagation delay of 4.6ns at 3.3V and includes ESD protection exceeding 2000V per MIL-STD-883 method 3015. Packaged in a WQFN (BQB) 16-pin format measuring 3.5mm by 2.5mm, it supports operation across a temperature range of -40°C to +125°C.

Feature Summary

• Qualified for automotive applications
• ESD protection exceeds 2000V per MIL-STD-883 method 3015
• Inputs accept voltages up to 5.5V for mixed-signal compatibility

Applications

• I/O expanders
• Motor drivers
• Server infrastructure
• Network switches
• Telecommunications infrastructure

Procurement Notes

Verify the specific ordering suffix matches the required package type and reel specifications. Confirm that the component meets the intended automotive qualification standards before integration. Review the latest Package Information Addendum for accurate thermal metrics and moisture sensitivity levels. Ensure design compliance with absolute maximum ratings to prevent damage during operation or handling.

Selection Notes

Select this multiplexer when bus-organized systems require signal routing between multiple sources and destinations. The 3-state outputs are suitable for connecting to shared data lines without loading effects. The wide input voltage tolerance allows interfacing with both 3.3V and 5V logic devices within the same system architecture.

Part Context

This component belongs to the SN74LVC257A-Q1 family of quadruple 2-line to 1-line data selectors. It is designed for low-voltage CMOS operations and provides high-speed switching capabilities. The device integrates four independent multiplexers into a single compact package, optimizing board space for complex digital logic applications.

Replacement Considerations

Catalog version: SN74LVC257A

FAQ

How does the device handle unused inputs?

Unused inputs must not float; they should be tied to VCC or GND to prevent undefined operational states.

What is the recommended configuration for OE during power-up?

To ensure a high-impedance state during power-up or power-down, OE should be tied to VCC through a pullup resistor.