CD74HC194E

Shift Registers Overview

The CD74HC194E is a 4-bit parallel in/parallel out shift register manufactured by Harris Corporation. It operates within the HCT series using CMOS technology and features bidirectional data shifting capabilities with true outputs. The device is housed in a 16-pin PDIP package and supports a supply voltage of 5 V. It functions across an extended temperature range from -55 °C to 125 °C, with a maximum operating frequency of 18 MHz.

Shift Registers Feature Summary

• Supports bidirectional serial data shifting for flexible input configurations
• Provides parallel data loading capability for rapid state updates
• Includes a dedicated hold mode to maintain current output states

Shift Registers Applications

• Data storage and transfer in digital logic circuits
• Serial-to-parallel conversion tasks
• Parallel-to-serial conversion applications

Shift Registers Procurement Notes

Verify component authenticity as the part is marked non-compliant with RoHS standards. Confirm the manufacturer origin is Harris Corporation rather than Texas Instruments, despite shared model numbering conventions. Ensure the specific E0 JESD-609 code matches the required lead finish specifications for your assembly process.

Shift Registers Selection Notes

Select this component when a 4-bit bidirectional shift register with parallel load functionality is required. The HCT series compatibility ensures interface alignment with standard TTL logic levels. Verify that the 16-pin DIP package fits the available board space and that the 18 MHz speed meets the system timing requirements.

Shift Registers Part Context

This component belongs to the 74HCT logic family, which bridges HC CMOS performance with TTL input compatibility. While similar models exist under Texas Instruments branding, this specific unit is identified as a Harris Corporation product. The designation indicates a standard commercial-grade shift register suitable for general-purpose digital processing.

Shift Registers Replacement Considerations

Cross-reference with other 74HCT194 variants from different manufacturers. Verify pinout compatibility and electrical characteristics before substitution. Note that some equivalents may differ in RoHS compliance status or package tolerance.