74HCT257N,652

Signal Switches, Multiplexers, Decoders Overview

The 74HCT257N,652 is a quad 2-input multiplexer with 3-state outputs manufactured by Nexperia. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-compatible input levels. The device includes clamp diodes on inputs for interfacing with voltages exceeding VCC. It provides non-inverting data paths and interfaces directly with system buses. The component is specified for ambient temperatures from -40 °C to +125 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexer architecture with common data select control
• 3-state outputs allowing direct interface with system buses
• TTL-compatible input levels for HCT logic family integration
• Input clamp diodes enabling safe interfacing above VCC

Signal Switches, Multiplexers, Decoders Applications

• Data routing in digital systems requiring bus interfacing
• Signal selection between two sources for four independent channels
• Logic implementation of 4-pole, 2-position switches

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the manufacturer designation as Nexperia rather than NXP USA Inc., as the datasheet identifies Nexperia B.V. as the producer. Confirm the package type corresponds to the SO16 (SOT109-1) outline provided in the official documentation. Ensure design compliance with the specified operating temperature range and absolute maximum ratings before procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL-level compatibility is required for multiplexing applications. The 3-state output capability facilitates direct connection to shared system buses without additional buffering. Verify that the supply voltage remains within the 4.5 V to 5.5 V range to ensure proper logic level translation and performance characteristics defined in the static and dynamic specifications.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74HCT series of high-speed Si-gate CMOS devices. It is pin compatible with Low-power Schottky TTL (LSTTL). The device integrates four identical multiplexers controlled by a single select input, offering a compact solution for multi-channel signal management in standard logic circuits.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74HC257N,652 serves as a CMOS-level equivalent with similar functionality but different input voltage thresholds. Other variants include the 74HCT257D in an SO16 package and the 74HCT257PW in a TSSOP16 package.