74HC595 查看數據表（PDF） - Philips Electronics

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74HC595

8-bit serial-in, serial or parallel-out shift register with output latches; 3-state

Philips Electronics 

Philips Semiconductors

8-bit serial-in, serial or parallel-out shift

register with output latches; 3-state

Product specification

74HC595; 74HCT595

handbook, full pagewidth

SH_CP input

DS input

VM

tsu

th

VM

tsu

th

Q7' output

VM

MLB196

74HC595: VM = 50%; VI = GND to VCC.

74HCT595: VM = 1.3 V; VI = GND to 3 V.

The shaded areas indicate when the input is permitted to change for predictable output performance.

Fig.9 Waveforms showing the data set-up and hold times for the DS input.

handbook, full pagewidth

MR input

SH_CP input

Q7' output

VM

tW

trem

VM

tPHL

VM

MLB197

74HC595: VM = 50%; VI = GND to VCC.

74HCT595: VM = 1.3 V; VI = GND to 3 V.

Fig.10 Waveforms showing the Master Reset (MR) pulse width, the master reset to output (Q7’) propagation

delay and the master reset to shift clock (SH_CP) removal time.

2003 Jun 25

20

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