SN74HCS594QDRQ1

Shift Registers Overview

The SN74HCS594QDRQ1 is an automotive-grade, 8-bit serial-in, parallel-out shift register with a D-type storage register. 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 provides balanced CMOS push-pull outputs capable of ±7.8 mA drive current at 6 V. It includes separate clocks for the shift and storage registers, direct overriding clear inputs, and a serial output for cascading.

Shift Registers Feature Summary

• AEC-Q100 qualified for automotive applications with specified temperature grades and ESD classifications.
• Schmitt-trigger inputs provide high noise immunity and tolerance for slow input signal transitions.
• Balanced CMOS push-pull outputs deliver symmetrical sourcing and sinking capabilities.
• Wettable flank package options facilitate reliable soldering and automated optical inspection.

Shift Registers Applications

• Output expansion
• LED matrix control
• 7-segment display control
• 8-bit data storage

Shift Registers Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the SN74HCS594-Q1 family includes multiple physical packages such as SOIC-16, TSSOP-16, WQFN, and SOT-23-THN. Confirm that the selected variant meets the necessary thermal resistance requirements for the target PCB layout. Ensure compatibility with the system's voltage levels and interface protocols before finalizing procurement.

Shift Registers Selection Notes

Select this component when an automotive-qualified shift register with Schmitt-trigger inputs is required. It is suitable for designs needing wide voltage operation between 2 V and 6 V. Consider the available package options if wettable flanks are needed for improved inspection reliability. Ensure the application does not require three-state outputs, as this device uses standard push-pull logic.

Shift Registers Part Context

This part belongs to the SN74HCS594-Q1 family of automotive 8-bit shift registers. The 'Q' in the model number indicates AEC-Q100 qualification for automotive use. The 'D' suffix specifically denotes the SOIC-16 package variant. The HCS series utilizes High-Speed CMOS technology with Schmitt-trigger inputs to enhance performance in noisy environments.

Shift Registers Replacement Considerations

SN74HCS594PWQ1 (TSSOP-16), SN74HCS594BQBQ1 (WQFN-16), SN74HCS594DYYQ1 (SOT-23-THN-16). Verify package dimensions and pinout compatibility before substitution.