MC74HC374A
http://onsemi.com
5
TIMING REQUIREMENTS (CL = 50 pF, Input tr = tf = 6.0 ns)
Symbol
Parameter
Figure
VCC
Volts
Guaranteed Limit
Unit
– 55 to 25_C
v 85_C
v 125_C
Min
Max
Min
Max
Min
Max
tsu
Minimum Setup Time, Data to Clock
3
2.0
3.0
4.5
6.0
50
40
10
9
65
50
13
11
75
60
15
13
ns
th
Minimum Hold Time, Clock to Data
3
2.0
3.0
4.5
6.0
5.0
5 0
5.0
ns
tw
Minimum Pulse Width, Clock
1
2.0
3.0
4.5
6.0
60
23
12
10
75
27
15
13
90
32
18
15
ns
tr, tf
Maximum Input Rise and Fall Times
1
2.0
3.0
4.5
6.0
1000
800
500
400
1000
800
500
400
1000
800
500
400
ns
SWITCHING WAVEFORMS
Figure 1.
tr
tf
VCC
GND
tTHL
tTLH
90%
50%
10%
90%
50%
10%
CLOCK
tPLH
tPHL
Q
tW
1/fmax
50%
OUTPUT
ENABLE
Q
tPZL
tPLZ
tPZH
tPHZ
10%
90%
VCC
GND
HIGH
IMPEDANCE
VOL
VOH
HIGH
IMPEDANCE
50%
DATA
CLOCK
VCC
GND
VALID
th
tsu
50%
Q
Figure 2.
Figure 3.