CY74FCT244DTQCT

Overview

The CY74FCT244DTQCT is an octal buffer and line driver manufactured by Texas Instruments, belonging to the FCT logic series. It features eight non-inverting inputs driving three-state outputs in a 20-pin Thin Small Outline Package (QSOP). The device operates within a supply voltage range of 4.75 V to 5.25 V. Key electrical specifications include a high-level output current of -32 mA and a low-level output current of 64 mA. Propagation delay is specified at 4.6 ns at 5 V. The component supports surface-mount installation and functions reliably across an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Provides eight-channel buffering with tri-state capability for bus-oriented systems
• Ensures signal integrity through TTL-compatible input and output levels
• Delivers strong drive performance with defined high and low output currents

Applications

• Memory module address and data buffering
• Clock distribution networks requiring high fan-out
• Bus-oriented architectural implementations

Procurement Notes

Verify the specific suffix 'DTQCT' against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with moisture sensitivity level requirements during assembly. Cross-reference the exact part number with authorized distributors to validate authenticity and current production status before procurement.

Selection Notes

Select this component when designing systems requiring octal buffering with three-state control and TTL interface compatibility. Consider the QSOP-20 package constraints for PCB layout. Evaluate the 4.75 V to 5.25 V supply requirement against system power rails. Confirm that the propagation delay meets timing constraints for the target application frequency.

Part Context

This part belongs to the Texas Instruments CY74FCT244T family of octal buffers. It shares functional similarities with other FCT series devices but is distinct in its specific pinout and packaging configuration. The device serves as a standard solution for interfacing between different logic families or driving heavy capacitive loads on digital buses.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.