CD74HC4094PWRE4

Shift Registers Overview

The CD74HC4094PWRE4 is an 8-bit serial-in, parallel-out shift and store bus register manufactured by Texas Instruments. It belongs to the 74HC series of high-speed CMOS logic devices. The component integrates an 8-stage shift register, an 8-stage storage register, and three-state parallel outputs within a single TSSOP-16 package. It operates on a supply voltage range of 2V to 6V and supports a wide operating temperature range from -55°C to +125°C. The device features two serial outputs for cascading capabilities and includes an output enable pin for bus sharing.

Shift Registers Feature Summary

• Integrates an 8-stage shift register and an 8-stage storage register with separate clock inputs for independent data shifting and latching operations.
• Provides three-state parallel outputs controlled by an output enable pin, allowing multiple devices to share a common data bus without conflict.
• Features dual serial outputs (QS1 and QS2) to facilitate flexible cascading configurations for expanding I/O capacity in complex systems.

Shift Registers Applications

• Microcontroller I/O expansion for controlling multiple peripheral devices using limited processor pins.
• Data acquisition systems requiring serial-to-parallel conversion for sensor data processing.
• Display driver circuits for managing LED arrays or segment displays via serial data streams.

Shift Registers Procurement Notes

Verify the specific suffix 'E4' indicates lead-free compliance and RoHS status as per manufacturer documentation. Confirm the TSSOP-16 package dimensions and pinout match your PCB footprint requirements. Ensure the operating voltage range aligns with your system's power supply rails. Check for any specific moisture sensitivity level (MSL) handling instructions during assembly.

Shift Registers Selection Notes

Select this component when an 8-bit serial-to-parallel interface with latched outputs is required. The HC logic family offers low power consumption and compatibility with standard TTL levels. Consider the TSSOP-16 package for surface-mount applications where space is constrained. Verify that the three-state output capability meets your bus architecture needs.

Shift Registers Part Context

This part is part of the Texas Instruments 74HC logic family, known for high-speed CMOS performance. It serves as a fundamental building block for digital systems needing data serialization and parallel distribution. The device complements other logic ICs by providing reliable data storage and output buffering capabilities in compact packages.

Shift Registers Replacement Considerations

Compatible substitutes include CD74HC4094PWR and CD74HC4094M96 from Texas Instruments. Cross-manufacturer equivalents such as NXP HEF4094 or STMicroelectronics variants may be functionally interchangeable if pinouts and electrical characteristics are verified against official datasheets.