CD74AC574EX

Overview

The CD74AC574EX is an octal D-type flip-flop with three-state outputs manufactured by Harris Corporation. It belongs to the AC logic series and features non-inverting data paths. The device operates within a supply voltage range of 2V to 6V. Key electrical parameters include a propagation delay of 135ns, high-level output current of -24mA, and low-level output current of 24mA. It supports through-hole mounting in a PDIP-20 package and functions across an industrial temperature range from -55°C to +125°C.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops for parallel data storage
• Three-state output capability allowing direct bus interfacing without additional drivers
• Non-inverting logic polarity ensuring output states match input data conditions

Applications

• Parallel data buffering in digital communication systems
• Register stages in microprocessor-based control circuits
• State retention modules in synchronous logic designs

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches PDIP-20 requirements. Ensure operating temperature ratings align with system environmental constraints. Validate electrical characteristics such as propagation delay and output drive currents against design tolerances before integration into final assemblies.

Selection Notes

Select this component when designing systems requiring octal storage with bus-compatible outputs. Consider the AC series performance metrics for speed and power consumption balance. Evaluate the wide supply voltage range for compatibility with varying logic levels. Assess thermal management needs given the extended industrial temperature operation capabilities of the device.

Part Context

This part is part of the CD74AC574 family produced by Harris Corporation. It serves as a standard octal D-type flip-flop solution within the AC logic product line. The device complements other Harris logic components like counters and bus drivers, offering reliable data storage functionality for complex digital circuit architectures requiring synchronized state holding.

Replacement Considerations

Direct substitutes include Texas Instruments CD74AC574E and MC74AC574DWG. Verify pinout compatibility and electrical parameter equivalence before substitution. Ensure replacement packages meet physical space constraints. Check manufacturer documentation for any functional differences between original and substitute parts.