CD74HC4094PWT

Shift Registers Overview

The CD74HC4094PWT is an 8-stage serial shift register with a storage latch and three-state parallel outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and supports an operating temperature range of -55°C to 125°C. The device features buffered inputs and two separate serial outputs (QS1 and QS2) for cascading. QS1 provides data on positive clock edges, while QS2 provides data on negative clock edges. The package is a 16-pin TSSOP.

Shift Registers Feature Summary

• Includes an 8-bit shift register and an 8-bit storage latch for strobing data from serial input to parallel outputs.
• Features two distinct serial outputs: QS1 for high-speed cascading on positive clock edges and QS2 for cascading on negative clock edges.
• Provides buffered three-state parallel outputs that can be directly connected to common bus lines.
• Offers wide operating temperature capability ranging from -55°C to 125°C.

Shift Registers Applications

• Cascaded systems requiring high-speed operation using the QS1 output
• Systems with slow clock rise times utilizing the QS2 output for synchronization
• Bus driver applications connecting to common bus lines via three-state outputs

Shift Registers Procurement Notes

Verify the complete part number including suffixes when ordering. The 'T' suffix denotes a small-quantity reel configuration. Confirm the specific package type and temperature range requirements against the datasheet specifications before procurement to ensure compatibility with the target application environment.

Shift Registers Selection Notes

Select this component for designs requiring serial-to-parallel conversion with latched outputs. The HC variant supports 2V to 6V operation, suitable for various CMOS logic families. Consider the QS1 and QS2 outputs for flexible cascading options depending on clock signal characteristics and system timing requirements.

Shift Registers Part Context

This device belongs to the Texas Instruments High-Speed CMOS Logic family. It is functionally compatible with other 74HC4094 variants in terms of logic operations but differs in packaging and reel quantity. The PWT designation specifically indicates the TSSOP package form factor with a small-quantity reel packing method.

Shift Registers Replacement Considerations

CD74HC4094PW

Shift Registers FAQ

What is the difference between the QS1 and QS2 serial outputs?

QS1 outputs data on the positive clock edge, suitable for high-speed cascading. QS2 outputs data on the next negative clock edge, providing a means for cascading devices when the clock rise time is slow.

How does the Strobe input affect the data flow?

Data in each shift register stage is transferred to the storage register when the Strobe input is high. This allows the parallel outputs to update simultaneously without intermediate states.