CY74FCT244ATQCT

Overview

The CY74FCT244ATQCT is an octal buffer and line driver manufactured by Texas Instruments. It belongs to the FCT logic series and features non-inverting, three-state outputs. The device operates within a supply voltage range of 4.75 V to 5.25 V. It provides a high-level output current of -32 mA and a low-level output current of 64 mA. The propagation delay is specified as 4.6 ns at 5 V. The component supports surface mount installation in a QSOP-20 package and functions reliably across an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Provides eight independent non-inverting signal paths with three-state output control for bus interfacing.
• Delivers strong drive capability with asymmetric current sourcing and sinking characteristics.
• Ensures fast signal transmission through low propagation delay performance typical of the FCT series.

Applications

• Clock buffering and distribution in digital systems
• Driving capacitive loads on data buses
• Interface isolation between different logic families

Procurement Notes

Verify the specific suffix 'ATQCT' against the manufacturer's official datasheet to confirm package type, temperature grade, and tape-and-reel specifications. Ensure compatibility with existing PCB footprint dimensions and soldering profiles. Confirm RoHS compliance status if required by project regulations. Cross-reference the part number with the latest Texas Instruments documentation to avoid obsolete or superseded variants.

Selection Notes

Select this component when an octal buffer with three-state outputs is required for 5V CMOS applications. The FCT series offers speed comparable to LS-TTL but with CMOS power consumption. Consider the QSOP-20 package constraints and thermal dissipation requirements. Verify that the input voltage levels are compatible with the driving source signals within the specified operating temperature range.

Part Context

This part is part of the CY74FCT244T family of octal buffers. It serves as a standard interface solution for connecting microprocessors, memory devices, and peripheral circuits. The FCT technology combines the speed of bipolar logic with the low power of CMOS. It is widely used in general-purpose digital electronics where signal integrity and drive strength are critical.

Replacement Considerations

Check for direct pin-compatible alternatives such as the CY74FCT244CTQCT or other FCT244 variants from Texas Instruments. Verify that any substitute maintains the same QSOP-20 package and electrical characteristics. Ensure the replacement part meets the same temperature and voltage specifications.