HD74HCT74A Datasheet, PDF (7/10 Pages) Hitachi Semiconductor – Dual D-type Positive Edge-triggered Flip Flops with Clear and Preset

HD74HCT74A
• Waveform
t_f
Input CLR
t_r
90 % 90 %
1.3 V 1.3 V
10 % 10 %
t_w
Input PR
t_f
90 %
1.3 V
10 %
t_r
90 %
1.3 V
10 %
t_r
t_f
t_w (H) t_w (L)
t_w
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 %
t_r
90 %
1.3 V
10 %
t_f
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
V_OH
V_OL
V_OH
V_OL
Note: 1. Input waveform : PRR = 1 MHz, duty cycle 50%, t_r = 6 ns, t_f = 6 ns
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