SN74HCS595BQBR

Shift Registers Overview

The SN74HCS595BQBR is an 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 supports an ambient temperature range from -40°C to +125°C. The device features balanced CMOS 3-state outputs capable of ±7.8 mA drive current at 6 V. It is housed in a WQFN-16 package measuring 3.60 mm x 2.60 mm.

Shift Registers Feature Summary

• Schmitt-trigger inputs eliminate erroneous data outputs caused by slow-edged or noisy input signals
• Balanced CMOS 3-state outputs provide high-impedance states for bus sharing
• Separate clocks allow independent control of the shift register and storage register

Shift Registers Applications

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

Shift Registers Procurement Notes

Verify the specific BQB suffix indicates the WQFN-16 package configuration. Confirm RoHS compliance status through official documentation. Ensure the ordering part number matches the required thermal pad specifications for the WQFN variant. Validate that the component meets the extended temperature requirements if operating above standard ranges.

Shift Registers Selection Notes

Select this component when noise immunity is critical due to its Schmitt-trigger architecture. It is suitable for applications requiring separate clocking for shifting and latching data. Consider the WQFN-16 package for compact designs needing thermal dissipation via the exposed pad. Verify output drive capabilities match the load requirements.

Shift Registers Part Context

This device belongs to the SN74HCS595 family of logic ICs manufactured by Texas Instruments. It is classified as a counter shift register within the HCS logic series. The BQB suffix specifically denotes the WQFN-16 package type, distinguishing it from SOIC or TSSOP variants in the same functional family.

Shift Registers Replacement Considerations

SN74HCS595DYYRQ1

Shift Registers FAQ

How does the OE pin affect internal register data?

When the Output Enable (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 operation of the OE input.

What is the function of the SRCLR input?

SRCLR is the shift register clear input. When active low, it clears the shift register regardless of other inputs.