SN74HCS594PWR

Shift Registers Overview

The SN74HCS594PWR is an 8-bit serial-in, parallel-out shift register with a storage register, manufactured by Texas Instruments in a TSSOP-16 package. It operates within a supply voltage range of 2 V to 6 V and supports an ambient temperature range from -40°C to +125°C. The device features Schmitt-trigger inputs for noise rejection and balanced CMOS push-pull outputs capable of ±7.8 mA drive current at 6 V. Typical supply current is 100 nA, and propagation delay ranges from 6 ns to 45 ns depending on voltage and temperature.

Shift Registers Feature Summary

• Schmitt-trigger inputs provide high noise immunity and tolerance for slow input signal transitions.
• Balanced CMOS push-pull outputs deliver strong source and sink currents for driving external loads.
• Separate clock inputs allow independent control of the shift register and the storage register operations.

Shift Registers Applications

• Output expansion for microcontroller systems
• LED matrix control circuits
• Seven-segment display driver applications
• General-purpose 8-bit data storage

Shift Registers Procurement Notes

Verify the specific ordering suffix 'PWR' corresponds to the TSSOP-16 package and tape-and-reel delivery format. Confirm that the component meets RoHS compliance requirements as specified in the manufacturer's documentation. Ensure the procurement channel provides valid traceability for production-grade silicon.

Shift Registers Selection Notes

Select this component when system design requires robust noise filtering via Schmitt triggers or extended industrial temperature operation up to 125°C. The separate shift and storage clocks facilitate multiplexed display driving without ghosting. Verify that the required output drive current does not exceed the absolute maximum ratings for the chosen supply voltage.

Shift Registers Part Context

This part belongs to the SN74HCS594 family of logic integrated circuits. The family includes variants such as the SOIC-16 (SN74HCS594DR) and WQFN-16 (SN74HCS594BQB) packages. All variants share identical electrical characteristics and functionality, differing only in physical footprint and thermal properties.

Shift Registers Replacement Considerations

Direct substitutes include SN74HCS594DR and SN74HCS594BQB. These parts offer identical logical functions but utilize different package types. Ensure the replacement package fits the available PCB footprint and thermal management constraints.