CY54FCT244TDMB

Overview

The CY54FCT244TDMB is a military-grade octal buffer and line driver manufactured by Texas Instruments. It features eight TTL-compatible CMOS inputs and three-state outputs, ensuring reliable signal transmission in harsh environments. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an extended industrial temperature range from -55°C to +125°C. Packaged in a 20-pin CDIP (J) housing, it provides high drive capability suitable for demanding applications requiring robust performance and compatibility with FCT logic families.

Feature Summary

• Military-grade construction designed for extreme environmental reliability
• TTL-compatible CMOS inputs for broad interface flexibility
• Three-state outputs enable efficient bus-oriented architectures

Applications

• Military communication systems requiring high reliability
• Avionics data bus buffering and driving
• Harsh environment industrial control interfaces

Procurement Notes

Verify the complete part number including the suffix 'TDMB' to ensure correct military qualification and package type. Confirm that the 20-pin CDIP form factor matches your PCB footprint requirements. Ensure the procurement source provides traceability documentation appropriate for defense or aerospace specifications. Check for RoHS compliance status if required by specific program constraints.

Selection Notes

Select this component when military temperature ratings and ruggedness are mandatory. It serves as a direct replacement for standard commercial variants in critical systems where failure is not an option. Consider the CDIP package size constraints during layout. Verify input compatibility with existing TTL-level signals to ensure proper logic threshold matching without additional level shifting circuitry.

Part Context

This device belongs to the FCT logic family, known for speed and low power consumption. The CY54 prefix indicates military qualification, distinguishing it from commercial counterparts like the CY74 series. It functions as an octal buffer, providing signal isolation and drive strength enhancement for digital circuits operating at standard 5V logic levels.

Replacement Considerations

The CY74FCT244TDMB is the commercial equivalent offering identical electrical functionality but without military temperature or screening qualifications. Substituting requires verifying that the application does not mandate the extended -55°C to +125°C operating range or specific military reliability standards.