CY74FCT257CTSOC

Overview

The CY74FCT257CTSOC is a quad two-input multiplexer 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 utilizes CMOS logic technology from the FCT series. It is housed in a 16-pin SOIC package with a maximum propagation delay of 5 ns at 5 V. The component supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides four independent channels for selecting data from two sources
• Features three-state outputs for bus-oriented memory addressing
• Utilizes Schottky diode clamping on inputs to limit ringing

Applications

• Bus-oriented memory addressing systems
• Data routing applications requiring signal selection
• High-speed digital signal processing interfaces

Procurement Notes

Verify the specific suffix 'CTSOCT' against official documentation, as it may indicate tape-and-reel packaging distinct from the standard tube variant. Confirm RoHS compliance status and moisture sensitivity level prior to procurement. Ensure the ordering part number matches the exact package and reel specifications required for your assembly process.

Selection Notes

Select this component when a quad multiplexer with three-state outputs is required for high-speed data routing. The FCT series offers performance comparable to LS TTL but with CMOS power consumption. Verify that the 16-pin SOIC package fits the PCB layout constraints and that the 5V logic levels align with the system design requirements.

Part Context

This part belongs to the CY74FCT257T family of multiplexers. It serves as a digital switch for routing multiple data lines. The device is designed for applications requiring fast switching speeds and low power dissipation. It is commonly used in computer systems and communication equipment where data path selection is critical.

Replacement Considerations

Check for direct pin-compatible substitutes within the same FCT family. Verify electrical characteristics such as propagation delay and output drive current against the original specification. Ensure the replacement part supports the same voltage range and package type.