74HCT257D,653

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74HCT257D,653 is a quad 2-input multiplexer with 3-state outputs in the 74HCT logic series. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-level input compatibility. The device utilizes an SO16 (SOT109-1) plastic small outline package with 16 leads. It supports an operating temperature range from -40 °C to +125 °C. At 5.0 V with a 15 pF load, the propagation delay is typically 13 ns.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexer architecture with non-inverting data paths
• 3-state outputs designed for direct system bus interfacing
• TTL-compatible input levels for seamless integration with standard logic families
• Integrated input clamp diodes enabling interface to voltages exceeding VCC

Signal Switches, Multiplexers, Decoders Applications

• Data routing and selection in digital systems
• Bus-oriented transmission applications
• High-speed data switching circuits

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix against official Nexperia documentation to confirm the exact package variant and tape-and-reel specifications. Confirm that the component meets all required environmental standards and lead-free compliance criteria before finalizing procurement orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL-level inputs are required alongside CMOS performance characteristics. Ensure the application environment remains within the specified -40 °C to +125 °C temperature range. Verify that the 3-state output configuration aligns with the target bus architecture requirements.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74HCT family of integrated circuits, which bridges the gap between older TTL logic standards and modern CMOS technology. The 74HCT257 specifically provides quad multiplexing capabilities, allowing multiple data sources to be routed to a single output line under control signals.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74HC257D serves as a functional alternative if CMOS-level inputs are acceptable instead of TTL levels. Verify pinout compatibility and ensure the replacement meets the same 3-state output and package requirements.