74HC595集成电路（IC）的移位寄存器规格书PDF中文资料

描述 Description

This device each 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 register and the storage register. The shift register has a direct-overriding clear, serial input, and serial output pins for cascading.

特性 Features

• High Speed Operation: tpd (RCK to Q) = 17 ns typ (CL = 50 pF)

• High Output Current: Fanout of 15 LSTTL Loads (QA to QH outputs)

• Wide Operating Voltage: VCC = 2 to 6 V

• Low Input Current: 1 µA max

• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)