CD74HCT670E

Overview

The CD74HCT670E is a High Speed CMOS Logic 4-by-4 Register File manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 295 ns. The device provides low-level output current of 6 mA and high-level output current of -6 mA. It supports four input lines and four output lines, housed in a PDIP-16 package with through-hole mounting. The component functions as a single circuit register file suitable for industrial temperature ranges from -55°C to +125°C.

Feature Summary

• Implements a 4-by-4 register file architecture using High Speed CMOS technology
• Provides dedicated control inputs for read, write, and clock operations
• Supports direct connection to TTL-compatible logic systems via HCT series standards

Applications

• Data storage in digital processing systems
• Interface circuits between microprocessors and peripheral devices
• Register files in computer memory architectures

Procurement Notes

Verify the specific ordering suffix 'E' corresponds to the PDIP-16 package configuration. Confirm RoHS compliance status through official manufacturer documentation. Ensure the application environment remains within the specified -55°C to +125°C operating temperature range. Validate power supply stability between 4.5 V and 5.5 V to maintain signal integrity.

Selection Notes

Select this component when a 4-bit wide, 4-word deep register file is required. Choose the HCT series for compatibility with standard 5V TTL logic levels. Consider the PDIP-16 package only if through-hole assembly is mandated by the PCB design constraints. Verify that the 295 ns propagation delay meets the system timing requirements.

Part Context

This part belongs to the CD74HCT670 family of register files produced by Texas Instruments. It utilizes High Speed CMOS technology to balance performance and power consumption. The device serves as a fundamental building block for sequential logic circuits requiring parallel data storage capabilities within larger digital systems.

Replacement Considerations

Consult official substitution guides for equivalent parts within the same logic family or alternative packages such as SOIC variants.