1 Features

• 2 V to 5.5 V VCC operation

• Maximum tpd of 10.5 ns at 5 V

• Support mixed-mode voltage operation on

all ports

• Ioff supports partial-power-down mode

operation

• Latch-up performance exceeds 250 mA per

JESD 17

2 Applications

• Increase the Number of Inputs on a Microcontroller

3 Description

The SN74LV165A device is a parallel-load, 8-bit shift

registers designed for 2 V to 5.5 V VCC operation.

When the device is clocked, data is shifted toward the

serial output QH. Parallel-in access to each stage is

provided by eight individual direct data inputs that are

enabled by a low level at the shift/load (SH/ LD) input.

The ’LV165A devices feature a clock-inhibit function

and a complemented serial output, Q H.

This device is fully specified for partial-power-down

applications using Ioff. The Ioff circuitry disables

the outputs, preventing damaging current backflow

through the devices when they are powered down.

SN74LV165AD属于集成电路（IC） > 移位寄存器。美国德州仪器公司制造生产的SN74LV165AD移位寄存器移位寄存器是低级逻辑器件，通常用于在串行和并行方式之间转换数字逻辑信号形式的数据，或在数字字内移动数据位的位置。移位寄存器通常使用集成到一个设备中的一组触发器来实现，常用于集成度更高的逻辑器件，但仍可用于 I/O 扩展等应用，在这些应用中离散形式的函数可能会非常有用。