MC74HC374A_14 Datasheet, PDF (4/7 Pages) ON Semiconductor – Octal 3-State Non-Inverting D Flip-Flop

MC74HC374A
TIMING REQUIREMENTS (C_L = 50 pF, Input t_r = t_f = 6.0 ns)
Guaranteed Limit
Symbol
Parameter
–55 to 25_C
v 85_C
v 125_C
V_CC
Figure Volts Min Max Min Max Min Max Unit
t_su Minimum Setup Time, Data to Clock
3
2.0 50
65
75
ns
3.0 40
50
60
4.5 10
13
15
6.0
9
11
13
t_h
Minimum Hold Time, Clock to Data
3
2.0 5.0
5.0
5.0
ns
3.0 5.0
50
5.0
4.5 5.0
5.0
5.0
6.0 5.0
5.0
5.0
t_w
Minimum Pulse Width, Clock
1
2.0 60
75
90
ns
3.0 23
27
32
4.5 12
15
18
6.0 10
13
15
t_r, t_f Maximum Input Rise and Fall Times
1
2.0
3.0
4.5
6.0
1000
800
500
400
1000
800
500
400
1000 ns
800
500
400
CLOCK
Q
t_r
t_f
90%
50%
10%
90%
50%
10%
t_W
1/f_max
t_PLH
t_TLH
t_PHL
t_THL
Figure 1.
SWITCHING WAVEFORMS
V_CC
OUTPUT
50%
ENABLE
GND
t_PZL
t_PLZ
Q
50%
t_PZH t_PHZ
Q
50%
Figure 2.
V_CC
GND
HIGH
IMPEDANCE
10% _VOL
90% ^VOH
HIGH
IMPEDANCE
VALID
V_CC
DATA
50%
GND
t_su
t_h
V_CC
CLOCK
50%
GND
Figure 3.
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