CD74HCT174EG4

Overview

The CD74HCT174EG4 is a hex D-type flip-flop manufactured by Texas Instruments, belonging to the 74HCT logic family. It features six independent D-type flip-flops with positive-edge triggering and an asynchronous active-low master reset input. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum clock frequency of 25 MHz. It utilizes silicon gate CMOS technology for low power consumption while maintaining speed compatibility with LSTTL. The component is housed in a 16-pin DIP package and is rated for operation across an extended temperature range from -55°C to +125°C.

Feature Summary

• Contains six independent D-type flip-flops with positive-edge clock triggering
• Includes an asynchronous active-low master reset input for immediate state clearing
• Provides high-speed performance compatible with LSTTL standards using CMOS technology
• Supports wide operating temperature ranges suitable for industrial applications

Applications

• Parallel data storage and buffering in digital systems
• Shift register construction for serial-to-parallel conversion
• State machine implementation in control circuits
• Frequency division and counting applications

Procurement Notes

Verify the specific ordering suffix 'E4' confirms lead-free compliance and RoHS status as per manufacturer documentation. Confirm package type accuracy, as standard variants may differ. Check current lifecycle status directly with Texas Instruments or authorized distributors, as availability and production status can change without notice. Ensure pinout compatibility matches the target PCB footprint before finalizing procurement decisions.

Selection Notes

Select this component when designing circuits requiring multiple synchronized storage elements with a common reset function. The HCT series ensures direct interface compatibility with TTL-level inputs, simplifying system integration. Consider the 16-pin DIP package constraints for through-hole assembly processes. Evaluate thermal requirements against the specified -55°C to +125°C operating range to ensure reliability under expected environmental conditions.

Part Context

This part belongs to the Texas Instruments 74HCT series of high-speed CMOS logic devices. The series combines the low power consumption of CMOS with the speed and pinout compatibility of Low-power Schottky TTL. The 74HCT174 specifically addresses applications needing multiple flip-flops in a single package, offering a compact solution for sequential logic design compared to discrete components.

Replacement Considerations

Public confirmed substitute part numbers include CD74HCT174E and CD74HCT174M96. Verify pinout and electrical specifications match exactly before substitution. Note that suffix variations may indicate differences in packaging or compliance status.