74AHC257D,118

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74AHC257D,118 is a quad 2-input multiplexer with 3-state outputs housed in an SO16 (SOT109-1) package. It operates on a supply voltage range of 2.0 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features balanced propagation delays, Schmitt-trigger inputs, and overvoltage tolerant inputs up to 5.5 V. Static characteristics include high noise immunity and CMOS low power dissipation.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexer architecture with 3-state outputs
• Overvoltage tolerant inputs allowing use as translators in mixed voltage environments
• All inputs equipped with Schmitt-trigger actions for high noise immunity
• Non-inverting data path with balanced propagation delays

Signal Switches, Multiplexers, Decoders Applications

• Mixed voltage signal routing
• Data selection circuits
• Bus switching applications

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix matches the required package type, as the base part number covers multiple packages. Confirm the temperature range aligns with system requirements, noting that this specific D-package variant supports extended industrial temperatures. Ensure input voltage levels are compatible with the CMOS logic family specifications provided in the datasheet.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad multiplexer with 3-state outputs is required within a 2.0 V to 5.5 V supply range. The SO16 package is suitable for surface mount assembly. Consider the AHCT variant if TTL input levels are necessary instead of standard CMOS levels. Verify that the load capacitance and operating frequency remain within the dynamic characteristic limits specified for the chosen supply voltage.

Signal Switches, Multiplexers, Decoders Part Context

This component belongs to the Nexperia 74AHC series of high-speed CMOS logic devices. The 74AHC257 specifically provides four independent 2-to-1 multiplexers. The 'D' suffix indicates the SO16 plastic small outline package with a 3.9 mm body width. It is designed for general-purpose digital signal processing and routing tasks requiring reliable performance across wide temperature ranges.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74AHCT257D,118 serves as a functional substitute within the same family, differing primarily in input logic level compatibility (TTL vs. CMOS). Other manufacturers may offer pin-compatible alternatives, but verification of electrical parameters and package dimensions is required.