Philips Semiconductors
Product specification
Dual JK flip-flop with set and reset;
positive-edge trigger
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
I
CC
category: flip-flops
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
T
amb
(°C)
SYMBOL
PARAMETER
min.
t
PHL
/ t
PLH
t
PLH
t
PHL
t
PHL
t
PLH
t
THL
/ t
TLH
t
W
t
W
t
rem
t
su
t
h
f
max
propagation delay
nCP to nQ, nQ
propagation delay
nS
D
to nQ
propagation delay
nS
D
to nQ
propagation delay
nR
D
to nQ
propagation delay
nR
D
to nQ
output transition time
clock pulse width
18
HIGH or LOW
set or reset pulse width
16
HIGH or LOW
removal time
nS
D
, nR
D
to nCP
set-up time
nJ, nK to nCP
hold time
nJ, nK to nCP
maximum clock
pulse frequency
16
18
3
27
74HCT
+25
typ.
20
13
19
19
16
7
9
8
8
8
−3
55
max.
35
26
35
35
32
15
23
20
20
23
3
22
−40
to
+85
min.
max.
44
33
44
44
40
19
27
24
24
27
3
18
−40
to
+125
min.
max.
53
39
53
53
48
22
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
74HC/HCT109
TEST CONDITIONS
UNIT V
CC
WAVEFORMS
(V)
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
Fig.6
Fig.7
Fig.7
Fig.7
Fig.7
Fig.6
Fig.6
Fig.7
Fig.7
Fig.6
Fig.6
Fig.6
MHz
1997 Nov 25
6
PHILIPS [ NXP SEMICONDUCTORS ]
