SN74HC164PWRG4

Shift Registers Overview

The SN74HC164PWRG4 is an 8-bit parallel-out serial shift register from the Texas Instruments SNx4HC164 family. It features AND-gated serial inputs (A and B) and an asynchronous clear (CLR) input. The device operates within a supply voltage range of 2 V to 6 V, with outputs capable of driving up to 10 LSTTL loads. It provides ±4-mA output drive at 5 V and maintains low power consumption with a maximum ICC of 80 µA. The typical propagation delay is 20 ns.

Shift Registers Feature Summary

• AND-gated serial inputs allow complete control over incoming data entry
• Asynchronous direct clear function resets all registers immediately
• Fully buffered clock and serial inputs ensure signal integrity

Shift Registers Applications

• Programmable Logic Controllers
• Appliances
• Video Display Systems
• Output Expander

Shift Registers Procurement Notes

Verify the specific package type matches the design requirements, as the SN74HC164 series is available in multiple form factors including SOIC, PDIP, SO, TSSOP, CDIP, CFP, and LCCC. Confirm that the ordering suffix corresponds to the desired packaging configuration and compliance standards before finalizing procurement orders.

Shift Registers Selection Notes

Select this component for applications requiring serial-to-parallel conversion with minimal GPIO usage. Ensure the operating temperature range aligns with the system environment, as the SN74HC164 variant supports -40°C to 125°C. Verify that the supply voltage remains within the 2 V to 6 V limits for proper logic threshold operation.

Shift Registers Part Context

This part belongs to the SNx4HC164 family of 8-bit shift registers manufactured by Texas Instruments. The 'PWR' suffix indicates a 14-pin TSSOP package, while 'G4' denotes lead-free and RoHS-compliant manufacturing processing. It is designed for general-purpose digital logic applications requiring reliable data shifting capabilities.

Shift Registers Replacement Considerations

SN74HC164PW

Shift Registers FAQ

How do the AND-gated serial inputs function?

Data enters the first flip-flop only when both serial inputs A and B are high. If either input is low, new data entry is inhibited, and the first flip-flop resets to low on the next clock pulse.

What triggers the data shift in the register?

Data is clocked into the register on the low-to-high-level transition of the CLK pin. Data at the serial inputs can be changed while CLK is high or low, provided minimum setup time requirements are met.