CD74HCT670E

Overview

The CD74HCT670E is a high-speed CMOS 4-by-4 register file manufactured by Texas Instruments, originally associated with Harris Corporation. It operates within a supply voltage range of 4.5 V to 5.5 V and features four channels with four input and four output lines. The device exhibits a propagation delay of 295 ns and provides low-level and high-level output currents of 6 mA and -6 mA, respectively. It is housed in a PDIP-16 package and supports through-hole mounting. The component functions reliably across an operating temperature range from -55°C to +125°C.

Feature Summary

• High-speed CMOS technology for efficient logic operations
• Integrated 4-by-4 register file architecture
• TTL-compatible inputs via HCT series design

Applications

• Data storage in digital systems
• Bus interface circuits
• Register file implementations

Procurement Notes

Verify the manufacturer origin carefully, as the CD74HCT670E was originally produced by Harris Corporation before its acquisition by Texas Instruments. Ensure the datasheet corresponds to the specific revision required for your design. Confirm that the PDIP-16 through-hole package meets your PCB layout constraints. Check RoHS compliance status if environmental regulations apply to your project requirements.

Selection Notes

Select this component when a 4-by-4 register file is needed with TTL-compatible interfaces. The HCT series ensures compatibility with standard TTL logic levels while offering CMOS power efficiency. Consider the 295 ns propagation delay for timing analysis. The wide operating temperature range makes it suitable for industrial environments requiring robust performance under varying thermal conditions.

Part Context

This part belongs to the CD74HCT670 family of register files. It shares functional similarities with other HCT series logic devices but is distinct in its specific 4x4 memory configuration. The transition from Harris Corporation to Texas Instruments means documentation may reference both entities depending on the production era.