CY74FCT257ATQCT

Overview

The CY74FCT257ATQCT is a quad 2-input multiplexer from the FCT logic series, manufactured by Texas Instruments. It features three-state outputs and operates within a supply voltage range of 4.75 V to 5.25 V. The device is housed in an SSOP-16 package and supports surface mount installation. It functions across a temperature range of -40°C to +85°C with a propagation delay of 6 ns at 5 V.

Feature Summary

• Quad configuration providing four independent 2-to-1 data selection channels
• Three-state output capability for efficient bus-oriented communication
• Fast CMOS technology ensuring low power consumption and high-speed switching

Applications

• Bus-oriented memory addressing systems
• Data routing in telecommunications equipment
• Signal path selection in industrial control units

Procurement Notes

Verify the specific suffix 'TQCT' against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with RoHS directives and check for moisture sensitivity level requirements during storage and handling procedures before integration.

Selection Notes

Select this component when a compact quad multiplexer with three-state outputs is required for 5V logic applications. Compare propagation delays and package dimensions against alternatives like the CY74FCT157 if speed or pinout constraints differ. Confirm that the SSOP-16 footprint matches the target PCB layout design.

Part Context

This part belongs to the CY74FCT257T family of fast CMOS multiplexers. It shares functional similarities with other FCT series devices but is distinguished by its specific quad 2-input architecture and three-state output configuration. The TQCT suffix indicates the specific SSOP-16 packaging and reel format used for automated assembly.

Replacement Considerations

The CY74FCT257ATD serves as a pin-compatible alternative in a SOIC-16 package. Verify electrical parameters and package dimensions before substitution.