CD74ACT574E

Overview

The CD74ACT574E is an octal D-type flip-flop manufactured by Texas Instruments, housed in a PDIP-20 package. It features non-inverting outputs with three-state capability and TTL input compatibility. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a propagation delay of 11.2 ns, high-level output current of -24 mA, and low-level output current of 24 mA. It supports through-hole mounting.

Feature Summary

• Octal configuration providing eight independent D-type edge-triggered flip-flops
• Three-state outputs allowing direct bus connection without external buffers
• TTL-compatible inputs ensuring logical compatibility with standard logic families

Applications

• Registering data in digital systems
• Bus-oriented memory applications
• Shift register configurations

Procurement Notes

Verify the manufacturer designation on the datasheet, as this component is produced by Texas Instruments rather than Harris Corporation. Confirm the PDIP-20 package type and ACT logic series specifications match the design requirements. Ensure the supply voltage range of 4.5 V to 5.5 V aligns with the system power architecture before procurement.

Selection Notes

Select this component for applications requiring high-speed data storage with bus-driven capabilities. The ACT series offers faster performance compared to standard HC or HCT logic families. Consider the 24 mA drive strength for driving multiple loads. Verify that the through-hole packaging is compatible with the PCB assembly process and mechanical constraints of the target enclosure.

Part Context

This part belongs to the SN54/74ACT574 family of octal D-type flip-flops with three-state outputs. It is designed for high-speed digital applications where data latching and bus interfacing are critical. The ACT series provides a balance between speed and power consumption, making it suitable for complex digital logic designs requiring reliable data retention.

Replacement Considerations

SN74ACT574N

FAQ

What is the maximum operating supply voltage?

The maximum operating supply voltage is 5.5 V.

Does the device have inverting or non-inverting outputs?

The CD74ACT574E features non-inverting outputs.