CD74HCT166EE4

Shift Registers Overview

The CD74HCT166EE4 is an 8-bit parallel-in/serial-out shift register fabricated with silicon gate CMOS technology. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a wide operating temperature range from -55°C to +125°C. The device features buffered inputs, balanced propagation delay, and transition times. It provides significant power reduction compared to LSTTL equivalents while maintaining comparable speeds. The package type is PDIP-16.

Shift Registers Feature Summary

• Direct LSTTL input logic compatibility
• Fully synchronous serial or parallel data entry
• Asynchronous master reset capability

Shift Registers Applications

• Parallel-to-serial data conversion
• Serial-to-parallel data conversion
• Data storage applications

Shift Registers Procurement Notes

Verify the specific ordering suffix EE4 corresponds to the desired RoHS-compliant lead finish (NIPDAU) and tube packaging configuration. Confirm that the active production status aligns with long-term availability requirements for the design lifecycle. Ensure the PDIP-16 through-hole package matches the target PCB footprint and assembly process specifications.

Shift Registers Selection Notes

Select this component when TTL-compatible CMOS performance is required in a through-hole format. The HCT series ensures direct interfacing with standard LSTTL logic levels without additional buffering. Consider the PDIP-16 package constraints regarding board space and thermal dissipation characteristics relative to surface-mount alternatives like the SOIC variant.

Shift Registers Part Context

This part belongs to the Texas Instruments 74HCT166 family of high-speed CMOS logic devices. It is functionally and pin-compatible with the standard 74LS166 low-power Schottky device. The EE4 suffix indicates a specific manufacturing revision compliant with environmental directives, distinct from non-E4 variants.

Shift Registers Replacement Considerations

CD74HCT166E