74HC164PW,118

Shift Registers Overview

The Nexperia 74HC164PW,118 is an 8-bit serial-in, parallel-out shift register housed in a TSSOP14 (SOT402-1) package. It operates within a supply voltage range of 2.0 V to 6.0 V and supports ambient temperatures from -40 °C to +125 °C. The device features two gated serial data inputs (DSA and DSB), eight parallel outputs (Q0-Q7), and an asynchronous master reset (MR). Data shifts on the LOW-to-HIGH clock transition with a typical propagation delay of 12 ns at 5.0 V.

Shift Registers Feature Summary

• Features two serial data inputs where either input acts as an active HIGH enable for data entry through the other.
• Includes an asynchronous master reset that clears the register and forces all outputs LOW independently of other inputs.
• Inputs include clamp diodes allowing interface to voltages exceeding VCC using current limiting resistors.

Shift Registers Applications

• General-purpose serial-to-parallel conversion
• Status indication circuits
• LED display driving

Shift Registers Procurement Notes

Verify the specific ordering suffix matches the required package type. Confirm the logic family variant aligns with system voltage requirements. Check the most recent datasheet revision for any updates to pinning or electrical characteristics before finalizing design specifications.

Shift Registers Selection Notes

Select this component when a CMOS-level 8-bit shift register is required. Ensure the operating voltage falls between 2.0 V and 6.0 V. Verify that the TSSOP14 package dimensions fit the PCB layout constraints. Consider the 74HCT164 variant if TTL-level input compatibility is necessary instead of CMOS levels.

Shift Registers Part Context

This part belongs to the 74HC164 family of 8-bit serial-in, parallel-out shift registers manufactured by Nexperia. It is designed for general-purpose digital logic applications requiring serial data expansion. The PW suffix indicates the TSSOP14 plastic thin shrink small outline package variant.

Shift Registers Replacement Considerations

Direct functional equivalents include the 74HC164D,653 (SO14 package) and the 74HC164BQ,115 (DHVQFN14 package). These variants share identical logical functionality but differ in physical package dimensions and thermal characteristics.

Shift Registers FAQ

How do the dual serial inputs function?

The device has two serial data inputs, DSA and DSB. Either input can serve as an active HIGH enable for data entry through the other input, allowing flexible gating of the serial data stream.

What triggers the data shift operation?

Data is shifted into the register on the LOW-to-HIGH transitions of the clock (CP) input.