CD74ACT653EN

Overview

The CD74ACT653EN is an octal bus transceiver manufactured by Harris Corporation, belonging to the 74ACT logic series. It features a single element with eight bits per element and provides non-inverting data transmission. The device utilizes tri-state outputs configured as open drain, allowing for wired-OR functionality or direct driving of high-capacitance loads. It operates within a supply voltage range of 4.5V to 5.5V and is housed in a 24-pin Dual In-Line Package (PDIP).

Feature Summary

• Octal bus transceiver architecture supporting eight-bit data transfer.
• Non-inverting signal path for direct logical transmission.
• Tri-state open-drain output configuration enabling bus sharing.
• CMOS technology optimized for 5V operation.

Applications

• Memory module data bus interfacing
• Microprocessor system address and data buses
• Control signal distribution networks

Procurement Notes

Verify the manufacturer origin, as Harris Semiconductor assets were acquired by Texas Instruments. Confirm the package type matches the required 24-PDIP footprint. Check RoHS compliance status, as older Harris production runs may not meet current environmental regulations. Ensure the open-drain output specification aligns with the receiving circuit's pull-up requirements.

Selection Notes

Select this component when an octal transceiver with open-drain outputs is required for bus arbitration or multi-driver environments. The ACT series offers faster switching speeds compared to standard HC or HCT logic families while maintaining CMOS power efficiency. Verify that the system voltage remains within the 4.5V to 5.5V operating range to ensure correct logic threshold levels.

Part Context

This part belongs to the CD74ACT family of advanced CMOS logic devices produced originally by Harris Semiconductor. These components are designed for high-speed digital applications requiring low power consumption. The specific model integrates eight independent bidirectional channels into a single integrated circuit, simplifying board layout for wide data paths.

Replacement Considerations

Compatible substitutes include the CD74ACT653E from Texas Instruments, which maintains identical pinout and electrical characteristics following the acquisition of Harris Semiconductor's logic product line. Other equivalent parts must support octal non-inverting transmission with tri-state open-drain outputs.