SN74LV595A集成电路（IC）的移位寄存器规格书PDF中文资料

SN74LV595A属于集成电路（IC）的移位寄存器。由德州仪器制造生产的SN74LV595A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。

1 Features

• Qualified for automotive applications

• Available in wettable flank QFN (WBQB) package

• Customer-Specific Configuration Control Can Be

Supported Along With Major-Change Approval

• 2-V to 5.5-V VCC Operation

• Typical VOLP (Output Ground Bounce) < 0.8 V at

VCC = 3.3 V, TA = 25°C

• Typical VOHV (Output VOH Undershoot) > 2.3 V at

VCC = 3.3 V, TA = 25°C

• Supports Mixed-Mode Voltage Operation on All

Ports

• 8-Bit Serial-In, Parallel-Out Shift

• Ioff Supports Partial-Power-Down Mode Operation

• Shift Register Has Direct Clear

2 Applications

• Output expansion

• LED matrix control

• 7-segment display control

3 Description

The SN74LV595A-Q1 contains an 8-bit serial-in,

parallel-out shift register that feeds an 8-bit D-type

storage register. The storage register has parallel 3-

state outputs. Separate clocks are provided for both

the shift and storage register. The shift register has

a direct overriding clear (SRCLR) input, serial (SER)

input, and a serial output for cascading. When the

output-enable (OE) input is high, all outputs except

QH' are in the high-impedance state.

The device is fully specified for partial-power-down

applications using Ioff. The Ioff circuitry disables

the outputs, preventing damaging current backflow

through the device when it is powered down.