CD74HCT670MT

Overview

The CD74HCT670MT is a high-speed CMOS logic register file manufactured by Texas Instruments. It implements a 4-by-4 register architecture within a single circuit configuration. The device operates on a supply voltage range of 4.5 V to 5.5 V and features four input lines and four output lines. It utilizes a 14-SOIC surface-mount package with a specified propagation delay of 23 ns at 4.5 V with a 50 pF load. The component supports an operating temperature range from -55 °C to +125 °C and includes static current specifications of 2 µA maximum.

Feature Summary

• High-speed CMOS technology for efficient logic processing
• Integrated 4-by-4 register file structure
• Wide industrial operating temperature capability

Applications

• Digital data storage systems
• Bus interface circuits
• Register-based logic control units

Procurement Notes

Verify the specific suffix 'MT' against the manufacturer's official documentation to confirm the tape-and-reel packaging format and pinout compatibility. Ensure that the HCT logic family voltage requirements align with the target system design, as this variant differs from HC series electrical characteristics. Cross-reference the datasheet revision history for any recent updates to mechanical dimensions or thermal ratings prior to finalizing procurement orders.

Selection Notes

Select this component when a 4-by-4 register file is required in a surface-mount application. The HCT series ensures TTL-compatible inputs while maintaining CMOS power efficiency. Confirm that the 14-SOIC footprint matches the PCB layout constraints. Verify that the 4.5 V to 5.5 V supply range meets the system power budget and that the 23 ns propagation delay satisfies the timing requirements of the intended digital circuit.

Part Context

This part belongs to the Texas Instruments CD74HCT670 series of high-speed CMOS logic devices. The series provides register file functionality designed for general-purpose digital applications. The CD74HCT670MT specifically denotes the surface-mount version in a 14-SOIC package, distinguishing it from through-hole variants like the CD74HCT670E. It serves as a core building block for managing parallel data paths in electronic systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.