NXP Semiconductors
74HC74; 74HCT74
Dual D-type flip-flop with set and reset; positive edge-trigger
Table 8.
Dynamic characteristics
…continued
Voltages are referenced to GND (ground = 0 V); C
L
= 50 pF unless otherwise specified; for test circuit see
Figure 9.
Symbol Parameter
t
su
set-up time
Conditions
nD to nCP; see
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
t
h
hold time
nD to nCP; see
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
f
max
maximum
frequency
nCP; see
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 5 V; C
L
= 15 pF
V
CC
= 6.0 V
C
PD
power
dissipation
capacitance
propagation
delay
C
L
= 50 pF; f = 1 MHz;
V
I
= GND to V
CC
T
amb
=
40 C
to +85
C
Min
75
15
13
3
3
3
4.8
24
-
28
-
Typ
[1]
6
2
2
6
2
2
23
69
76
82
24
Max
-
-
-
-
-
-
-
-
-
-
-
T
amb
=
40 C
to +125
C
Unit
Min
90
18
15
3
3
3
4.0
20
-
24
-
Max
-
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
MHz
MHz
MHz
MHz
pF
74HCT74
t
pd
nCP to nQ, nQ; see
V
CC
= 4.5 V
V
CC
= 5 V; C
L
= 15 pF
nSD to nQ, nQ; see
V
CC
= 4.5 V
V
CC
= 5 V; C
L
= 15 pF
nRD to nQ, nQ; see
V
CC
= 4.5 V
V
CC
= 5 V; C
L
= 15 pF
t
t
t
W
transition
time
pulse width
nQ, nQ; see
V
CC
= 4.5 V
nCP HIGH or LOW;
see
V
CC
= 4.5 V
nSD, nRD LOW;
see
V
CC
= 4.5 V
t
rec
t
su
recovery
time
set-up time
nSD, nRD; see
V
CC
= 4.5 V
nD to nCP; see
V
CC
= 4.5 V
74HC_HCT74
-
-
18
15
44
-
-
-
53
-
ns
ns
-
-
23
18
50
-
-
-
60
-
ns
ns
-
-
24
18
7
50
-
19
-
-
-
60
-
22
ns
ns
ns
-
23
9
-
27
-
ns
20
8
15
9
1
5
-
-
-
24
9
18
-
-
-
ns
ns
ns
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 4 — 27 August 2012
8 of 21
PHILIPS [ NXP SEMICONDUCTORS ]
