CD74ACT273E

Overview

The CD74ACT273E is an octal D-type flip-flop belonging to the ACT logic series, manufactured by Harris Corporation. It features eight positive-edge-triggered D flip-flops with true outputs and a master reset function. The device utilizes CMOS technology and is housed in a 20-pin plastic dual in-line package (PDIP-20). Electrical specifications include a maximum operating frequency of 85 MHz at nominal supply voltage, a load capacitance of 50 pF, and a maximum output current of 24 mA. The operational temperature range spans from -55 °C to +125 °C.

Feature Summary

• Octal configuration containing eight independent positive-edge-triggered D-type flip-flops within a single integrated circuit.
• Master reset functionality allows simultaneous clearing of all stored data states across the eight bits.
• CMOS construction ensures compatibility with standard logic levels while supporting high-speed operation up to 85 MHz.
• True output polarity provides non-inverted signals directly corresponding to the input data states.

Applications

• High-speed parallel data storage registers in digital systems
• Shift register implementations requiring wide data bus handling
• Counter circuits utilizing octal bit-width configurations
• Frequency division applications in clock signal processing

Procurement Notes

Verify component authenticity through manufacturer documentation or authorized distributor channels. Confirm package integrity for PDIP-20 housing and check for lead-free compliance status if required by specific assembly standards. Ensure supply chain sources provide valid traceability records matching the Harris Corporation manufacturing origin.

Selection Notes

Select this component when designing systems requiring octal data latching with high-speed performance capabilities. The ACT series offers improved switching speeds compared to standard AC logic families. Consider the PDIP-20 through-hole package for prototyping or applications necessitating manual insertion. Validate power supply stability within specified limits to maintain the 85 MHz operational frequency target.

Part Context

This device represents part of the broader CD74ACT family of high-speed CMOS logic components produced by Harris Corporation. The ACT series was engineered to bridge performance gaps between older TTL and standard CMOS technologies. As an octal flip-flop, it serves as a fundamental building block for complex sequential logic designs requiring reliable state retention and rapid clock synchronization.

Replacement Considerations

Cross-reference with Texas Instruments equivalents such as CD74ACT273EE4 or CD74ACT273M96 for pin-compatible alternatives. Verify that substitute manufacturers maintain identical electrical characteristics and package dimensions to ensure seamless integration without circuit redesign requirements.