SN74LV165APWRG4

Shift Registers Overview

The SN74LV165APWRG4 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 direct data inputs enabled by a low level at the shift/load (SH/LD) input. The device includes a clock-inhibit function and provides both complemented serial output QH and non-inverted 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 'PW' corresponds to the TSSOP-16 package and 'RG4' indicates RoHS compliance and green manufacturing status as defined in the official datasheet. Confirm the specific revision level matches design requirements. Ensure supply voltage remains within the specified 2 V to 5.5 V range during operation.

Shift Registers Selection Notes

Select this component when an 8-bit parallel-to-serial conversion with latching capability is required. It is suitable for bus interface applications where output ringing is a concern due to its low-drive characteristics. Ensure the system operates within the -40°C to 125°C temperature range and respects the absolute maximum ratings for input and output voltages.

Shift Registers Part Context

This part belongs to the SN74LV165A family of parallel-load 8-bit shift registers. The 'LV' designation indicates Low-Voltage CMOS technology, while '165' identifies the specific functional type. The 'P' in the part number denotes the TSSOP package style, and 'W' specifies the tape-and-reel packaging format.

Shift Registers Replacement Considerations

SN74LV165ADBR

Shift Registers FAQ

How does the SH/LD pin control data loading?

When the SH/LD pin is held low, parallel data inputs are enabled and loaded into the internal registers. When held high, the device shifts data serially based on the CLK or CLK INH transitions.

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 applications.