CD74HCT374M

Overview

The CD74HCT374M is an octal D-type flip-flop manufactured by Texas Instruments, belonging to the HCT logic series. It features eight edge-triggered flip-flops with three-state outputs, enabling parallel data storage and high-impedance control via an output enable pin. The device operates on a single supply voltage ranging from 4.5 V to 5.5 V. It utilizes a 20-pin Small Outline Integrated Circuit (SOIC) package for surface-mount installation. The component supports a maximum clock frequency of 60 MHz and exhibits a propagation delay of 33 ns at 4.5 V with a 50 pF load.

Feature Summary

• Integrates eight positive-edge-triggered D-type flip-flops for parallel data storage
• Provides three-state outputs controlled independently of register operation
• Ensures TTL-compatible input levels through HCT CMOS technology
• Supports high-speed digital signal processing with defined propagation delays

Applications

• Parallel-to-serial data conversion circuits
• Buffering and latching in microprocessor-based systems
• General-purpose register arrays in digital logic designs
• Data acquisition systems requiring temporary storage

Procurement Notes

Verify the specific suffix 'M' indicates the SOIC-20 package variant when sourcing. Confirm that the manufacturer is Texas Instruments, as other vendors may use different part numbers for equivalent functions. Ensure the procurement channel provides official datasheets to validate electrical characteristics against design requirements. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when TTL compatibility is required alongside CMOS low power consumption. The HCT series ensures direct interfacing with older TTL logic families without level shifting. Consider the 20-pin SOIC package for surface-mount applications where space efficiency is prioritized over through-hole mounting. Evaluate the 60 MHz speed limit against system clock requirements to ensure adequate timing margins.

Part Context

This device belongs to the SN74HC/CD74HCT37x family of octal flip-flops. It shares functional similarities with the SN74HC374 but differs in input structure to support TTL voltages. The CD74 prefix typically denotes commercial grade temperature ranges and specific manufacturing lines within Texas Instruments' logic portfolio. It serves as a standard building block for sequential logic circuits in industrial and consumer electronics.

Replacement Considerations

• SN74HCT374N
• MM74HCT374MTCX