CY74FCT257ATDR

Overview

The CY74FCT257ATDR is a quad 1-of-2 data selector/multiplexer from the FCT logic series, manufactured by Texas Instruments. It features three-state outputs and is housed in an SOIC-Narrow-16 surface-mount package. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a propagation delay of 6 ns. It functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates four independent 1-of-2 data selectors with three-state output capability for bus-oriented systems.
• Utilizes CMOS Fast (FCT) technology to achieve high-speed switching performance with low power consumption.
• Designed for surface-mount assembly using a narrow SOIC-16 package format.

Applications

• Bus-oriented memory architectures requiring data routing
• High-speed digital signal processing applications
• Telecommunications equipment data path selection

Procurement Notes

Verify the specific suffix 'A' indicates the commercial temperature grade (-40°C to +85°C) and 'D' denotes the SOIC-16 package configuration. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets before finalizing procurement specifications.

Selection Notes

Select this component when a quad multiplexer with three-state outputs is required for high-speed data routing. Ensure the design accommodates the 4.75 V to 5.25 V operating voltage range and the specified 6 ns propagation delay characteristics for timing constraints.

Part Context

This part belongs to the CY74FCT257 family of multiplexers. It shares functional similarities with the SN74F257 series but utilizes distinct FCT technology. The 'R' suffix typically indicates tape-and-reel packaging for automated assembly processes.

Replacement Considerations

Public confirmed substitute part numbers include CY74FCT257ATDRE4 and CY74FCT257ATDRG4.