SN74HCS595QBQBRQ1

Shift Registers Overview

The SN74HCS595QBQBRQ1 is an automotive-grade, 8-bit serial-in, parallel-out shift register with a storage register and Schmitt-trigger inputs. It operates within a supply voltage range of 2 V to 6 V and features balanced CMOS 3-state outputs. The device supports cascading via a serial output (QH') and includes separate clocks for the shift and storage registers. It is qualified under AEC-Q100 standards for Grade 1 applications, functioning reliably across temperatures from -40°C to +125°C.

Shift Registers Feature Summary

• AEC-Q100 qualified for automotive environments with specified temperature grades and ESD protection levels.
• Schmitt-trigger inputs provide noise rejection and support slow-edged signals without erroneous data outputs.
• Balanced CMOS 3-state outputs allow high-impedance states controlled by an active-low output enable pin.
• Wettable flank QFN package facilitates reliable soldering and automatic optical inspection.

Shift Registers Applications

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

Shift Registers Procurement Notes

Verify that the specific WBQB package variant matches the wettable flank requirement for your assembly process. Confirm the AEC-Q100 Grade 1 qualification aligns with your vehicle's thermal and reliability specifications. Ensure input signal voltages remain within the absolute maximum ratings to prevent clamp diode damage during operation.

Shift Registers Selection Notes

Select this component when a wide operating voltage range between 2 V and 6 V is required. The Schmitt-trigger architecture is essential for noisy automotive environments or slow signal transitions. Use this part if wettable flank packaging is mandated for enhanced solder joint inspection and reliability compared to standard QFN packages.

Shift Registers Part Context

This device belongs to the SN74HCS595-Q1 family of automotive logic ICs. It shares functional compatibility with other HCS series shift registers but is distinguished by its specific WBQB package configuration. The family is designed to meet rigorous automotive quality standards while providing low power consumption and robust noise immunity.

Shift Registers Replacement Considerations

SN74HCS595BQB-Q1

Shift Registers FAQ

How does the OE pin affect internal register data?

When the OE input is high, the storage register outputs enter a high-impedance state. However, internal register data and the serial output (QH') are not impacted by the OE operation.

What is the purpose of the SRCLR input?

The SRCLR input provides a direct overriding clear function for the shift register. When active low, it resets the shift register regardless of clock or serial input states.

Can multiple SN74HCS595QBQBRQ1 devices be connected together?

Yes, the devices can be cascaded. The serial output (QH') of one device connects to the serial input (SER) of the next, allowing for extended bit shifting capabilities.