HD74HCT74A Datasheet, PDF (5/10 Pages) Hitachi Semiconductor – Dual D-type Positive Edge-triggered Flip Flops with Clear and Preset

HD74HCT74A
Switching Characteristics (C_L = 50 pF)
Item
Symbol V_CC (V)
Maximum clock f_max
4.5
frequency
5.5
Propagation
delay time
t _PLH
4.5
t _PHL
5.5
4.5
5.5
Output rise / fall t_r / t_f
4.5
time
5.5
Setup time
t _su
4.5
5.5
4.5
5.5
Hold time
t_h
4.5
5.5
Pulse width
t_w
4.5
5.5
Input capacitance C_I
—
Power dissipation C_PD
—
capacitance
Ta = 25°C
Min Typ
27 78
30 92
— 14
— 12
— 14
— 13
—7
—6
10 —
9
—
5
—
5
—
0
—
0
—
15 —
14 —
—3
— 35
Ta = –40 to 85°C Unit Input
Output
Max Min Max
FROM TO
— 22
—
MHz
— 24
—
28 —
35
ns PRE, Q, Q
25 —
32
CLR
22 —
28
CLK
Q, Q
20 —
25
15 —
19
ns
Each
13 —
16
output
— 13
—
ns D
— 12
—
—5
—
PRE, CLR
—5
—
inactive
—0
—
ns
—0
—
— 19
—
ns
— 17
—
10 —
10
pF
——
—
pF
5