74HCT257DB,118

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74HCT257DB,118 is a quad 2-input multiplexer with 3-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and accepts TTL-level inputs. The device features non-inverting data paths and includes input clamp diodes for overvoltage protection. It is housed in an SO16 plastic small outline package (SOT109-1) and is specified for operation from -40 °C to +125 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexer architecture with 3-state outputs
• TTL-compatible input switching levels
• Non-inverting data path design
• Input clamp diodes for interface protection

Signal Switches, Multiplexers, Decoders Applications

• System bus interfacing via 3-state outputs
• Data routing in digital logic circuits
• Signal selection in high-noise environments

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the component meets the necessary temperature range specifications for the intended application environment. Ensure compatibility with existing PCB footprints for the SO16 package before finalizing procurement orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL-level input compatibility is required alongside CMOS performance characteristics. The 3-state output capability allows direct connection to system buses without additional buffering. Consider the wide operating temperature range for industrial or automotive-grade applications requiring robust thermal stability.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74HCT series of high-speed Si-gate CMOS devices manufactured by Nexperia. It provides four independent multiplexers in a single integrated circuit, offering a compact solution for signal routing tasks in complex digital systems.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74HC257D serves as a functional equivalent with CMOS input levels instead of TTL. Verify input voltage compatibility when substituting HC variants for HCT versions in existing designs.