CD74FCT2245ATM

Overview

The CD74FCT2245ATM is an octal bus transceiver from the FCT logic series, manufactured by Harris Corporation. It features a single function with eight bits per element and non-inverting true output polarity. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports TTL input and output levels. It utilizes a 20-pin PDSO package and exhibits a propagation delay of 4.6 ns. The component provides three-state outputs with series resistors and functions across a temperature range of -40 °C to 85 °C.

Feature Summary

• Octal bidirectional data transfer capability with direction control
• Three-state outputs integrated with series resistors for signal integrity
• TTL-compatible input and output voltage levels for system interfacing

Applications

• High-speed data bus architectures requiring octal buffering
• Memory mapping circuits in embedded systems
• General-purpose digital signal routing applications

Procurement Notes

Verify manufacturer origin as Harris Corporation or successor entities like Texas Instruments. Confirm RoHS compliance status and lead times through authorized distributors. Ensure package authenticity matches the specified 20-pin small outline format. Check for obsolescence notices or lifecycle changes affecting long-term availability.

Selection Notes

Select this component for designs requiring fast switching speeds with low power consumption typical of the FCT family. Compare against standard 74FCT variants for pinout compatibility. Consider the specific 4.6 ns delay characteristics for timing-critical paths. Evaluate thermal performance within the specified operating temperature range.

Part Context

This part belongs to the CD74FCT2245T series of bus transceivers. It shares functional similarities with other octal transceivers but is distinguished by its specific Harris Corporation manufacturing lineage. The device serves as a critical interface component between microprocessors and peripheral buses.

Replacement Considerations

Public confirmed substitute part numbers include CY74FCT2245ATPWR.