CD74ACT174E

Overview

The CD74ACT174E is a hex D-type flip-flop manufactured by Texas Instruments, belonging to the ACT logic series. It features six independent positive-edge-triggered circuits with non-inverting outputs and an asynchronous active-low reset. The device operates within a supply voltage range of 1.5 V to 5.5 V, supporting CMOS outputs with TTL-compatible inputs. It exhibits a propagation delay of 14 ns and provides output drive currents of ±24 mA. Packaged in a 16-pin PDIP, it functions reliably across an industrial temperature range of -55°C to +125°C.

Feature Summary

• Hex configuration providing six independent D-type flip-flops in a single package
• Positive-edge triggering mechanism for synchronous data capture
• Asynchronous active-low reset function for immediate state clearing
• TTL-compatible input thresholds ensuring interoperability with standard logic families

Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations requiring high-speed operation
• State machine storage elements in digital control systems
• Buffering applications for signal isolation and timing alignment

Procurement Notes

Verify the manufacturer designation on the component marking, as Harris Corporation was acquired by Texas Instruments. Ensure the ordering suffix matches the required package type and temperature grade. Confirm RoHS compliance status through official documentation, as historical variants may differ from current production runs. Cross-reference the datasheet revision to ensure compatibility with specific design requirements.

Selection Notes

Select this component when a hex flip-flop configuration is required with wide supply voltage flexibility. The ACT series offers superior speed compared to standard 74HC devices while maintaining low power consumption. Consider the PDIP package for prototyping or through-hole assembly needs. Verify that the 14 ns propagation delay meets the system timing constraints and that the ±24 mA drive capability suffices for the connected load capacitance.

Part Context

This component belongs to the CD74ACT family of advanced CMOS logic devices. The ACT series bridges the performance gap between older 74ALS and newer 74AHC technologies. It is designed for high-speed digital applications requiring robust noise immunity and wide operating voltage ranges. The hex flip-flop variant is a fundamental building block for sequential logic design in embedded systems.

Replacement Considerations

CD74ACT174M96E4: SOIC-16 package equivalent with identical electrical characteristics.