SN74LV165AD

Shift Registers Overview

The SN74LV165AD 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. Data shifts toward the serial output QH when clocked. The device includes a clock-inhibit function and a complemented serial output, Q̅H. It supports mixed-mode voltage operation on all ports and includes Ioff circuitry to disable outputs during partial-power-down mode, preventing damaging current backflow.

Shift Registers Feature Summary

• Parallel-load capability with eight direct data inputs activated by a low-level shift/load signal
• Supports mixed-mode voltage operation across all ports within the specified supply range
• Integrated Ioff circuitry disables outputs to prevent current backflow during partial-power-down states

Shift Registers Applications

• Increasing the number of inputs available to a microcontroller
• Bus interface applications requiring minimized output ringing
• Peripheral data loading gates in system controllers

Shift Registers Procurement Notes

Verify the specific package suffix 'D' corresponds to the SOIC-16 form factor required for your PCB layout. Confirm that the operating voltage range of 2 V to 5.5 V aligns with your system's power supply specifications. Ensure that unused inputs are terminated to VCC or ground to maintain proper device operation and prevent oscillation.

Shift Registers Selection Notes

Select this component when an 8-bit parallel-to-serial conversion is required with low-voltage compatibility. The balanced CMOS push-pull outputs provide similar sourcing and sinking capabilities. Consider the maximum propagation delay specifications relative to your clock frequency requirements. Verify thermal dissipation needs if driving significant capacitive loads near the 50 pF limit.

Shift Registers Part Context

This device belongs to the SN74LV165A family of parallel-load 8-bit shift registers. It is part of the broader SN74 logic series manufactured by Texas Instruments. The 'LV' designation indicates Low-Voltage CMOS technology, enabling operation down to 2 V. The 'D' suffix specifically denotes the SOIC surface-mount package variant.

Shift Registers Replacement Considerations

SN74LV165ADBR: SSOP-16 package equivalent. SN74LV165ADR: SOIC-16 package equivalent. SN74LV165APW: TSSOP-16 package equivalent.