74AHCT257D-Q100J

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74AHCT257D-Q100J is a quad 2-input multiplexer with 3-state outputs, qualified to AEC-Q100 Grade 1 for automotive use. It operates within a supply voltage range of 4.5 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. Inputs are overvoltage tolerant up to 5.5 V and feature Schmitt-trigger action. The device utilizes TTL input levels and provides balanced propagation delays. It is housed in an SO16 (SOT109-1) plastic small outline package.

Signal Switches, Multiplexers, Decoders Feature Summary

• Automotive product qualification in accordance with AEC-Q100 (Grade 1)
• Overvoltage tolerant inputs allowing operation in mixed voltage environments
• Schmitt-trigger action at all inputs for noise immunity
• High noise immunity with CMOS low power dissipation

Signal Switches, Multiplexers, Decoders Applications

• Automotive electronic systems requiring signal routing
• Mixed voltage interface translation between different logic families
• Data selection circuits in high-noise industrial or automotive environments

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix 'D' corresponds to the SO16 package and 'Q100J' indicates automotive grade qualification before procurement. Confirm that the TTL input level requirement matches the system design, as this variant differs from the CMOS-level AHC version. Ensure environmental specifications meet the target operating temperature range of -40 °C to +125 °C for the intended application.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when automotive reliability per AEC-Q100 Grade 1 is mandatory. Choose this part over standard commercial variants if the application requires tolerance to input voltages exceeding the supply rail. Verify compatibility with TTL logic levels, as opposed to the CMOS levels found in the 74AHC257 variant. Consider the SO16 package constraints regarding board space and thermal dissipation requirements.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the Nexperia 74AHC(AHCT)257-Q100 family of quad multiplexers. It shares functional similarities with other 74-series logic devices but is distinguished by its automotive qualification and specific electrical characteristics tailored for harsh environments. The 'AHCT' designation specifically denotes TTL-compatible input thresholds within a high-speed CMOS process.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct pin-compatible replacements within the same family include the 74AHC257D-Q100J, which offers CMOS input levels instead of TTL. Other manufacturers may offer equivalent quad multiplexers, but verification of AEC-Q100 compliance and input voltage tolerances is required.