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CD54HCT74 Datasheet, PDF (5/12 Pages) Texas Instruments – Dual D Flip-Flop with Set and Reset Positive-Edge Trigger
◁
CD54HC74, CD74HC74, CD54HCT74, CD74HCT74
Prerequisite For Switching Specifications (Continued)
PARAMETER
TEST
VCC
25oC
-40oC TO 85oC -55oC TO 125oC
SYMBOL CONDITIONS (V) MIN TYP MAX MIN MAX MIN MAX UNITS
Hold Time (Figure 5)
tH
-
2
3
-
-
3
-
3
-
ns
4.5 3 -
-
3
-
3
-
ns
6
3
-
-
3
-
3
-
ns
Removal Time R, S, to CP
(Figure 5)
tREM
-
2 30 -
-
40
-
45
-
ns
4.5 6 -
-
8
-
9
-
ns
6
5
-
-
7
-
8
-
ns
Pulse Width R, S (Figure 1)
tW
-
2 80 -
-
100
-
120
-
ns
4.5 16 -
-
20
-
24
-
ns
6 14 -
-
17
-
20
-
ns
Pulse Width CP (Figure 1)
tW
-
2 80 -
-
100
-
120
-
ns
4.5 16 -
-
20
-
24
-
ns
6 14 -
-
17
-
20
-
ns
CP Frequency
fMAX
-
2
6
-
-
5
-
4
-
MHz
4.5 30 -
-
25
-
20
-
MHz
6 35 -
-
29
-
23
-
MHz
HCT TYPES
Data to CP Setup Time
(Figure 6)
tSU
-
4.5 12 -
-
15
-
18
-
ns
Hold Time (Figure 6)
Removal Time R, S, to CP
(Figure 6)
tH
tREM
-
4.5 3 -
-
3
-
3
-
ns
-
4.5 6 -
-
8
-
9
-
ns
Pulse Width R, S (Figure 2)
Pulse Width CP (Figure 2)
CP Frequency
tW
tW
fMAX
-
4.5 16 -
-
20
-
24
-
ns
-
4.5 18 -
-
23
-
27
-
ns
-
4.5 25 -
-
20
-
16
-
MHz
Switching Specifications Input tr, tf = 6ns
PARAMETER
TEST
VCC
25oC
-40oC TO 85oC -55oC TO 125oC
SYMBOL CONDITIONS (V) MIN TYP MAX MIN MAX MIN MAX UNITS
HC TYPES
Propagation Delay,
CP to Q, Q (Figure 3)
Propagation Delay,
R, S to Q, Q (Figure 3)
Transition Time (Figure 3)
Input Capacitance
tPLH, tPHL CL = 50pF
2
-
- 175
-
220
-
265
ns
CL = 50pF
4.5 -
-
35
-
44
-
53
ns
CL = 15pF
5
- 14 -
-
-
-
-
ns
CL = 50pF
6
-
- 30
-
37
-
45
ns
tPLH, tPHL CL = 50pF
2
-
- 200
-
250
-
300
ns
CL = 50pF
4.5 -
-
40
-
50
-
60
ns
CL = 15pF
5
- 17 -
-
-
-
-
ns
CL = 50pF
6
-
- 34
-
43
-
51
ns
tTLH, tTHL CL = 50pF
2
-
- 75
-
95
-
110
ns
CL = 50pF
4.5 -
-
15
-
19
-
22
ns
CL = 50pF
6
-
- 13
-
16
-
19
ns
CI
-
-
-
-
10
-
10
-
10
pF
5
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