Philips Semiconductors
Product specification
Octal D-type transparent latch; 3-state
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
I
CC
category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
T
amb
(°C)
74HC
SYMBOL PARAMETER
+25
min.
t
PHL
/ t
PLH
propagation delay
D
n
to Q
n
propagation delay
LE to Q
n
3-state output enable
time OE to Q
n
3-state output disable
time OE to Q
n
output transition time
typ.
47
17
14
50
18
14
44
16
13
55
20
16
14
5
4
80
16
14
50
10
9
5
5
5
14
5
4
11
4
3
3
1
1
max.
150
30
26
150
30
26
140
28
24
150
30
26
60
12
10
100
20
17
65
13
11
5
5
5
−40
to +85
min.
max.
190
38
33
190
38
33
175
35
30
190
38
33
75
15
13
120
24
20
75
15
13
5
5
5
−40
to +125
min.
max.
225
45
38
225
45
38
210
42
36
225
45
38
90
18
15
ns
74HC/HCT573
TEST CONDITIONS
UNIT V
CC
WAVEFORMS
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
Fig.6
t
PHL
/ t
PLH
ns
Fig.7
t
PZH
/ t
PZL
ns
Fig.8
t
PHZ
/ t
PLZ
ns
Fig.8
t
THL
/ t
TLH
ns
Fig.6
t
W
enable pulse width
HIGH
set-up time
D
n
to LE
hold time
D
n
to LE
ns
Fig.7
t
su
ns
Fig.9
t
h
ns
Fig.9
December 1990
5
PHILIPS [ NXP SEMICONDUCTORS ]
