SN74AHC257QWBQBRQ1

Signal Switches, Multiplexers, Decoders Overview

The SN74AHC257QWBQBRQ1 is an automotive-grade quad 2-input data selector/multiplexer with three-state non-inverting outputs. It operates within a supply voltage range of 2V to 5.5V and supports junction temperatures from -40°C to +125°C. The device features low propagation delay, with a maximum of 9.5ns at VCC = 5V and CL = 50pF. It includes balanced CMOS outputs capable of sourcing and sinking similar currents, standard CMOS inputs, and latch-up performance exceeding 250mA per JESD 17. The component is housed in a WQFN-16 package.

Signal Switches, Multiplexers, Decoders Feature Summary

• AEC-Q100 qualified for automotive applications with specified temperature grades and ESD classifications
• Quad configuration providing four independent 2-to-1 multiplexing channels controlled by shared select and enable inputs
• Three-state outputs designed for bus-oriented systems allowing direct interfacing with data lines
• Wettable flank QFN package construction facilitating improved side wetting and automatic optical inspection

Signal Switches, Multiplexers, Decoders Applications

• Data selection between multiple sources
• Multiplexing signals onto a common bus
• Switching data buses between source devices

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix matches the required package type and tape/reel specifications. Confirm that the AEC-Q100 qualification grade aligns with the target automotive application requirements. Ensure input transition rates comply with recommended operating conditions to prevent oscillation. Validate thermal management strategies against the provided junction-to-ambient resistance values.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when designing automotive logic circuits requiring high-speed data routing with minimal propagation delay. The wide supply voltage range accommodates various system power architectures. Consider the balanced output drive capabilities for driving capacitive loads up to the specified limits. Ensure unused inputs are properly terminated to maintain stable operation and prevent excessive power consumption.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the Texas Instruments SN74AHC257-Q1 family of automotive quadruple 2-input data selectors. It shares functional similarities with other members of the AHCT and HCS series but is distinguished by its specific A/B control architecture and three-state output configuration optimized for bus-driven environments.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AHC257-Q1