HD74HCT74A Ver la hoja de datos (PDF) - Hitachi -> Renesas Electronics

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HD74HCT74A

Dual D–type Positive Edge–triggered Flip Flops with Clear and Preset

Hitachi -> Renesas Electronics 

HD74HCT74A

• Waveform

tf

Input CLR

tr

90 % 90 %

1.3 V 1.3 V

10 % 10 %

tw

Input PR

tf

90 %

1.3 V

10 %

tr

90 %

1.3 V

10 %

tr

tf

tw (H) tw (L)

tw

Input CLK

90 % 90 %

1.3 V 1.3 V 1.3 V

10 % 10 %

1.3 V

Input D

Output Q

Output Q

t su (H) t h (H) t su (L) t h (L)

90 %

1.3 V

10 %

tr

90 %

1.3 V

10 %

tf

1.3 V

1.3 V

t PHL

1.3 V

t PLH

1.3 V

t PHL

t PLH

1.3 V

1.3 V

t PLH

1.3 V

t PHL

1.3 V

t PLH

t PHL

1.3 V

1.3 V

3V

0V

3V

0V

3V

1.3 V

0V

3V

0V

VOH

VOL

VOH

VOL

Note: 1. Input waveform : PRR = 1 MHz, duty cycle 50%, tr = 6 ns, tf = 6 ns

7

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