MC74ACT652N

Overview

The MC74ACT652N is an octal transceiver and register featuring 3-state outputs in a non-inverting configuration. It integrates registered bus transceiver circuits with D-type flip-flops and control logic to enable multiplexed data transmission from input buses or internal storage registers. Data loads into the A or B bus registers on the LOW-to-HIGH clock transition. The device supports independent registers for both buses, allowing selection between real-time and stored data transfers. It offers true and inverting data path choices with outputs capable of sourcing and sinking 24 mA.

Feature Summary

• Independent registers for A and B buses allow separate data handling
• Multiplexed real-time and stored data transfer capabilities
• Choice of true and inverting data paths for flexible interfacing
• 3-state outputs support bus-oriented applications

Applications

• Bus-oriented data transmission systems
• Microprocessor interface circuits
• Registered data buffering applications

Procurement Notes

Verify the specific suffix 'N' corresponds to the PDIP-300 slim dual-in-line package when ordering. Confirm RoHS compliance status through official datasheets as historical variants may differ. Check current production status and lead times directly with authorized distributors. Ensure voltage levels match system requirements for the ACT series TTL-compatible inputs.

Selection Notes

Select this component when octal bidirectional data transfer with latching is required. The non-inverting output polarity suits direct bus connections without additional inversion logic. The 24 mA drive capability supports moderate capacitive loads. Verify that the 3-state output control signals align with the system's bus arbitration scheme.

Part Context

This part belongs to the MC74AC/ACT652 family of octal transceivers. It is functionally related to other bus driver families but distinguished by its integrated register functionality. The device serves as a bridge between microprocessors and peripheral buses, combining switching and storage in a single package.

Replacement Considerations

MC74AC652N is the AC series equivalent with similar functionality but different speed and power characteristics. Cross-reference with other octal transceivers like MC74AC646 if inverted outputs are acceptable. Verify pin compatibility before substituting with generic 74-series equivalents.