SN74LV165ADRG3

Shift Registers Overview

The SN74LV165ADRG3 is a parallel-load, 8-bit shift register from the SN74LV165A family. It operates within a supply voltage range of 2 V to 5.5 V and supports mixed-mode voltage operation on all ports. The device features balanced CMOS push-pull outputs and includes clock-inhibit functionality alongside a complemented serial output (QH). It incorporates Ioff circuitry to support partial-power-down mode by disabling outputs to prevent damaging current backflow. The component is designed for surface-mount installation in a 16-pin VQFN package.

Shift Registers Feature Summary

• Supports mixed-mode voltage operation across all ports
• Includes Ioff circuitry for partial-power-down applications
• Features balanced CMOS push-pull outputs
• Provides clock-inhibit function with complemented serial output

Shift Registers Applications

• Increasing the number of inputs on a microcontroller
• Bus interface type applications where output ringing is a concern
• Input expansion with shift registers

Shift Registers Procurement Notes

Verify that the ordering suffix RG3 corresponds to the specific VQFN package variant required for the design. Confirm the revision status matches the production data specifications. Ensure compatibility with the recommended operating conditions regarding supply voltage and temperature ranges before finalizing procurement.

Shift Registers Selection Notes

Select this component when an 8-bit parallel-to-serial conversion is needed with low-voltage compatibility. The LV series offers wide supply voltage flexibility compared to standard logic families. Consider the VQFN package dimensions for PCB layout constraints. Verify that the input transition rates meet the requirements for the chosen supply voltage to ensure reliable operation.

Shift Registers Part Context

This part belongs to the SN74LV165A family of parallel-load 8-bit shift registers manufactured by Texas Instruments. The family provides various package options including SOIC, SSOP, TSSOP, and VQFN. The LV series is characterized by its ability to operate at lower voltages while maintaining compatibility with standard logic levels through mixed-mode operation capabilities.

Shift Registers Replacement Considerations

SN74LV165ADR

Shift Registers FAQ

How does the device handle partial-power-down scenarios?

The device includes Ioff circuitry that disables all outputs when the supply pin is held at 0 V, preventing damaging current backflow regardless of applied input voltages.

What is the function of the SH/LD input?

The SH/LD input enables parallel loading of data into the register stages when held low. When held high, it inhibits parallel loading and allows shifting operations.