SN74LV165ARGYRG4

Shift Registers Overview

The SN74LV165ARGYRG4 is a parallel-load, 8-bit shift register from Texas Instruments designed for VCC operation between 2 V and 5.5 V. It features eight individual direct data inputs enabled by a low level at the shift/load (SH/LD) input. The device includes a clock-inhibit function and complemented serial output QH. It supports mixed-mode voltage operation on all ports and incorporates Ioff circuitry to disable outputs during partial-power-down mode, preventing damaging current backflow.

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

Shift Registers Applications

• Increasing the number of inputs on a microcontroller

Shift Registers Procurement Notes

Verify that the ordering suffix RGY corresponds specifically to the VQFN-16 package configuration as defined in the manufacturer's documentation. Confirm RoHS compliance status and ensure the component meets the required operating temperature range specifications before procurement.

Shift Registers Selection Notes

Select this component when an 8-bit parallel-to-serial conversion is required within a system operating between 2 V and 5.5 V. Ensure the design accommodates the specific thermal resistance characteristics of the VQFN-16 package and adheres to the recommended load capacitance limits for optimal performance.

Shift Registers Part Context

This part belongs to the SN74LV165A family of parallel-load 8-bit shift registers manufactured by Texas Instruments. The RGY suffix indicates the specific VQFN-16 package variant, which measures 4.00 mm by 3.50 mm. This family is designed for low-drive CMOS applications where output ringing is a concern.

Shift Registers Replacement Considerations

Consult the orderable addendum in the SN74LV165A datasheet for alternative package options such as D, DB, NS, PW, DGV, or BQB. Verify pin compatibility and electrical specifications before substituting with other logic families.

Shift Registers FAQ

How does the SH/LD input control data loading?

Parallel loading is enabled when the SH/LD input is held low, allowing data from the eight individual inputs to be loaded into the register simultaneously.

What is the function of the Ioff circuitry?

The Ioff circuitry disables all outputs when the supply pin is held at 0 V, preventing damaging current backflow through the device during partial-power-down conditions.