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
−40
to
+85
−40
to
+125
max.
225
45
38
265
53
45
225
45
38
225
45
38
90
18
15
120
24
20
75
15
13
5
5
5
ns
74HC/HCT373
TEST CONDITIONS
UNIT V
WAVEFORMS
CC
(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.7
min. typ. max. min. max. 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
41
15
12
50
18
14
44
16
13
47
17
14
14
5
4
80
16
14
50
10
9
5
5
5
17
6
5
14
5
4
−8
−3
−2
150
30
26
175
35
30
150
30
26
150
30
26
60
12
10
100
20
17
65
13
11
5
5
5
190
38
33
220
44
37
190
38
33
190
38
33
75
15
13
t
PHL
/ t
PLH
ns
Fig.8
t
PZH
/ t
PZL
ns
Fig.9
t
PHZ
/ t
PLZ
ns
Fig.9
t
THL
/ t
TLH
ns
Fig.7
t
W
LE pulse width
HIGH
set-up time
D
n
to LE
hold time
D
n
to LE
ns
Fig.8
t
su
ns
Fig.10
t
h
ns
Fig.10
September 1993
5
PHILIPS [ NXP SEMICONDUCTORS ]
