74HC595U 데이터 시트보기 (PDF) - Philips Electronics

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74HC595U

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

AC WAVEFORMS

Product specification

74HC595; 74HCT595

handbook, full pagewidth

SH_CP input

Q7' output

1/fmax

VM

tW

tPLH

tTLH

tPHL

90%

VM

10%

tTHL

MSA699

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

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

Fig.7 Waveforms showing the clock (SH_CP) to output (Q7’) propagation delays, the shift clock pulse width and

maximum shift clock frequency.

handbook, full pagewidth

SH_CP input

ST_CP input

Qn output

VM

tsu

VM

tW

tPLH

VM

1/fmax

tPHL

MSA700

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

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

Fig.8 Waveforms showing the storage clock (ST_CP) to output (Qn) propagation delays, the storage clock

pulse width and the shift clock to storage clock set-up time.

2003 Jun 25

19

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