CD74HC595中文资料具有三态输出寄存器的 8 位移位寄存器数据手册TI规格书

描述 Description

The CD74HC595 device 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 registers. The shift register has a direct overriding clear (SRCLR)\\ input, serial (SER) input, and serial output for cascading. When the output-enable (OE)\\ input is high, the outputs are in the high-impedance state. Both the shift register clock (SRCLK) and storage register clock (RCLK) are positive-edge triggered. If both clocks are connected together, the shift register always is one clock pulse ahead of the storage register.

特性 Features

• 8-Bit Serial-In, Parallel-Out Shift
• Wide Operating Voltage Range of 2 V to 6 V
• High-Current 3-State Outputs Can Drive Up To 15 LSTTL Loads
• Low Power Consumption, 80-µA Max ICC
• Typical tpd = 14 ns
• ±6-mA Output Drive at 5 V
• Low Input Current of 1 µA Max
• Shift Register Has Direct Clear

简介

CD74HC595属于集成电路（IC）的移位寄存器。由TI制造生产的CD74HC595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。