SN74AHCT164PWR

Shift Registers Overview

The SN74AHCT164PWR is an 8-bit parallel-out serial shift register from the Texas Instruments SN74AHCT164 family. It operates within a supply voltage range of 4.5V to 5.5V and features TTL-compatible inputs with balanced CMOS push-pull outputs. The device includes two AND-gated serial inputs (A and B) and an asynchronous clear (CLR) input that resets all registers to low upon activation. Clocking occurs on the rising edge of the CLK signal. Propagation delays are specified at a maximum of 14ns under a 50pF load condition.

Shift Registers Feature Summary

• Features two gated serial inputs connected through an internal AND gate for data control
• Includes an asynchronous clear input that immediately resets all eight register stages to a logical low state
• Provides balanced CMOS push-pull outputs capable of sourcing and sinking similar currents
• Utilizes TTL-compatible CMOS inputs designed for direct interfacing with standard logic devices

Shift Registers Applications

• Expanding the number of available output pins on microcontroller systems
• Temporary storage of up to eight bits of digital data
• Control interfaces for seven-segment display modules

Shift Registers Procurement Notes

Verify the specific ordering suffix matches the required package type, as the PW designation indicates a TSSOP-14 housing. Confirm that the operating environment remains within the specified temperature range of -40°C to +125°C. Ensure power supply decoupling capacitors are placed physically close to the VCC and GND pins to maintain signal integrity and prevent noise interference during operation.

Shift Registers Selection Notes

Select this component when a simple serial-to-parallel conversion mechanism is required without complex communication protocols. It is suitable for designs needing TTL-compatible input thresholds while maintaining CMOS output drive capabilities. Consider the maximum capacitive load limits and ensure unused inputs are properly terminated to avoid undefined states or excessive power consumption during system operation.

Shift Registers Part Context

This device belongs to the SN74AHCT164 series of 8-bit shift registers manufactured by Texas Instruments. The AHCT logic family combines the speed of Advanced High-Speed CMOS technology with the input compatibility of Transistor-Transistor Logic standards. The PW suffix specifically denotes the 14-pin Thin-Shrink Small-Outline Package variant used in surface-mount applications.

Shift Registers Replacement Considerations

Direct functional substitutes include other 8-bit serial-in parallel-out shift registers with similar pinouts and logic families. Verify that any replacement maintains compatible voltage levels and propagation delay characteristics to ensure seamless integration into existing circuit designs without requiring schematic modifications.