SN74HCS595PWR

Shift Registers Overview

The SN74HCS595PWR is an 8-bit serial-in, parallel-out shift register with Schmitt-trigger inputs and 3-state output registers. It operates within a supply voltage range of 2 V to 6 V and supports an extended ambient temperature range from –40°C to +125°C. The device features low power consumption with typical ICC of 100 nA and provides ±7.8-mA output drive at 6 V. It is housed in a TSSOP-16 package.

Shift Registers Feature Summary

• Schmitt-trigger inputs eliminate erroneous data outputs caused by slow-edged or noisy input signals.
• Balanced CMOS 3-state outputs allow for high-impedance states when the output-enable input is high.
• Separate clocks are provided for the shift register and the storage register to manage data flow independently.

Shift Registers Applications

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

Shift Registers Procurement Notes

Verify that the ordering suffix PWR corresponds to the TSSOP-16 package as specified in the datasheet. Confirm the logic family HCS matches requirements for Schmitt-trigger functionality. Ensure environmental specifications align with the extended temperature range if operating conditions exceed standard limits.

Shift Registers Selection Notes

Select this component when noise immunity is critical due to its Schmitt-trigger architecture. It is suitable for applications requiring independent clocking of shift and storage registers. Consider the 3-state output capability for bus sharing scenarios. Verify that the 2 V to 6 V supply range fits the system design constraints.

Shift Registers Part Context

This part belongs to the SN74HCS595 series, which includes variants like SN74HCS595D (SOIC) and SN74HCS595BQB (WQFN). All share the same logical function but differ in physical packaging. The PWR suffix specifically denotes the TSSOP-16 form factor used in surface-mount assemblies.

Shift Registers Replacement Considerations

SN74HCS595D

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') remain unaffected by the OE operation.

What is the purpose of the SRCLR input?

SRCLR is a direct overriding clear input for the shift register. When active low, it clears the shift register regardless of other input states.