74HCT257D,652

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74HCT257D,652 is a quad 2-input multiplexer with 3-state outputs in an SO16 package. It operates within a supply voltage range of 4.5 V to 5.5 V. The device features TTL input levels and non-inverting data paths. Propagation delay from data inputs to output is typically 16 ns at 4.5 V. Enable time and disable time are typically 15 ns and 16 ns respectively at 4.5 V. Transition time is typically 5 ns. Input capacitance is 3.5 pF.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexer architecture with 3-state outputs
• TTL-compatible input switching levels for HCT logic family
• Non-inverting data path functionality
• ESD protection exceeding 2000 V (HBM) and 1000 V (CDM)

Signal Switches, Multiplexers, Decoders Applications

• System bus interfacing via 3-state outputs
• Data routing in digital logic circuits
• Signal selection in microprocessor systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix ',652' against current Nexperia documentation to confirm packaging details and compliance status. Ensure the design utilizes the SO16 plastic small outline package variant. Confirm that the application environment remains within the specified -40 °C to +125 °C temperature range for reliable operation.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL-level inputs are required for a quad multiplexer application. The 3-state outputs allow direct connection to system buses. Verify that the operating voltage stays between 4.5 V and 5.5 V. Consider the SO16 package dimensions if space constraints exist in the PCB layout.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74HCT series of high-speed CMOS logic devices manufactured by Nexperia. The 74HCT257 specifically provides four independent 2-to-1 multiplexers. It is designed for applications requiring fast switching speeds and compatibility with standard TTL logic families while maintaining CMOS low power dissipation characteristics.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check for equivalent parts such as 74HC257 variants if CMOS inputs are acceptable. Verify pinout compatibility before substitution. Ensure the replacement supports the required 3-state output functionality and operating voltage range.