CD74LPT244AM

Overview

The CD74LPT244AM is a CMOS bus driver from the LPT series manufactured by Harris Corporation. It features two independent functions, each handling four bits of data with true output polarity. The device utilizes a 20-pin PDSO package and operates within a temperature range of -40°C to +85°C. Key electrical specifications include a maximum low-level output current of 0.024 A and a load capacitance of 50 pF. Control logic is enabled via a low signal. The component is classified as non-compliant with RoHS standards.

Feature Summary

• Provides dual-channel buffering for four-bit wide data buses
• Features three-state outputs controlled by an active-low enable signal
• Designed for standard CMOS logic interface compatibility

Applications

• Data bus buffering in digital systems
• Input/output expansion circuits
• Signal isolation between logic stages

Procurement Notes

Verify the specific suffix 'AM' against official Harris documentation to confirm pinout and electrical tolerances. Confirm RoHS non-compliance status for regulatory adherence. Ensure the PDSO20 package dimensions match the target PCB footprint. Validate that the -40°C to +85°C operating range meets system environmental requirements before integration.

Selection Notes

Select this component when dual 4-bit bus driving with three-state capability is required. The LPT series offers CMOS compatibility. Verify that the 0.024 A drive current suffices for the connected load. Consider the 20-pin SSOP/PDSO form factor for space-constrained designs. Check if the specified temperature range aligns with the application environment.

Part Context

This part belongs to the Harris 74LPT logic family, designed for low-power CMOS applications. It serves as a buffer or line driver within digital logic circuits. The manufacturer, Harris Corporation, has undergone corporate changes, affecting current support channels. This specific model represents a legacy component often replaced by modern equivalents.

Replacement Considerations

Consult official cross-reference lists for direct replacements. Verify pin compatibility and electrical parameters such as voltage levels and drive strength. Ensure the substitute supports the same 20-pin package and three-state functionality.