CD74HC4094PWR

Shift Registers Overview

The CD74HC4094PWR is an 8-bit serial-in, parallel-out shift and storage bus register manufactured by Texas Instruments. It integrates an 8-bit shift register, an 8-bit storage register, tri-state parallel outputs, and two cascading outputs within a TSSOP-16 package. The device operates on a supply voltage range of 2V to 6V and supports a wide operating temperature from -55°C to +125°C. It utilizes CMOS technology compatible with LSTTL pins while maintaining low power consumption.

Shift Registers Feature Summary

• Features a two-stage design allowing data preparation in the shift register without affecting current parallel outputs until a strobe pulse updates the storage register.
• Includes dual serial output pins (QS1 and QS2) to facilitate flexible cascading configurations for expanding output capabilities or signal monitoring.
• Provides tri-state parallel outputs controlled by an output enable pin, allowing multiple devices to share system buses without conflict.

Shift Registers Applications

• I/O expansion for microcontrollers requiring more parallel outputs than available pins.
• Cascaded systems driving displays or indicator arrays using minimal control lines.
• Bus interface circuits where shared data lines require tri-state isolation.

Shift Registers Procurement Notes

Verify the specific suffix PWR corresponds to the TSSOP-16 package and tape-and-reel delivery format when sourcing. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the supply voltage range aligns with your system's logic levels before procurement.

Shift Registers Selection Notes

Select this component when a compact solution is needed to convert serial data streams into parallel outputs with latching capability. The tri-state feature is essential for bus-sharing applications. Consider the HC series speed and voltage compatibility against HCT variants if strict TTL interfacing is required at 5V.

Shift Registers Part Context

This part belongs to the Texas Instruments CD74HC4094 family, which are high-speed CMOS shift registers. The PWR suffix specifically denotes the plastic small-outline thin profile (TSSOP) surface-mount package. It serves as a standard I/O expander within the broader 74HC logic family ecosystem.

Shift Registers Replacement Considerations

Direct equivalents include the CD74HC4094M96 in a SOIC-16 package. Other manufacturers producing functionally similar 8-bit shift registers with tri-state outputs may serve as alternatives, provided pinouts and electrical characteristics match.