CD74FCT244M96

Overview

The CD74FCT244M96 is an octal bus driver from the FCT series, manufactured by Harris Corporation. It features two independent 4-bit functions with true outputs and 3-state capability. The device operates within a supply voltage range of 4.5V to 5.5V, typically at 5V. It utilizes a PDSO20 package with 20 terminals. Key electrical parameters include a maximum output current (Iol) of 0.064 A and a load capacitance (CL) of 50 pF. The typical VOLP is 1V at VCC = 5V and TA = 25°C. The operating temperature range spans from -40°C to 85°C.

Feature Summary

• Provides octal buffering with two independent 4-bit channels for flexible data routing.
• Features 3-state outputs controlled by low-enable signals to prevent bus contention.
• Delivers high-speed performance suitable for CMOS systems via the FCT logic family.

Applications

• High-speed data bus buffering in computer systems
• Clock distribution networks requiring precise timing
• Memory address and data line drivers

Procurement Notes

Verify the manufacturer designation as Harris Corporation, noting that Texas Instruments may list equivalent or successor parts under different suffixes such as G4. Confirm the RoHS status, as original Harris versions are often non-compliant. Ensure the package type matches the required PDSO20 footprint and check the operating temperature grade against system requirements.

Selection Notes

Select this component when an octal buffer with 3-state control is needed for 5V CMOS applications. The FCT series offers faster switching speeds compared to standard HC or HCT logic families. Consider the 50 pF load capacitance specification when designing for high-frequency signal integrity. Verify compatibility with existing enable logic levels, which are active-low in this configuration.

Part Context

This part belongs to the CD74FCT244 family of bus drivers. It is functionally similar to other octal buffers but distinguished by its specific FCT speed characteristics and Harris manufacturing origin. The M96 suffix typically denotes a specific tape-and-reel packaging variant or regional distribution code used by Harris.

Replacement Considerations

The CD74FCT244M96G4 is a lead-free version available from Texas Instruments, which acquired Harris Semiconductor's logic business. Verify pinout compatibility and electrical specifications before substitution.