Datasheet

December 1990 7
Philips Semiconductors Product specification
BCD to 7-segment latch/decoder/driver 74HC/HCT4511
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
r
=t
f
= 6 ns; C
L
= 50 pF
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITIONS
74HC
V
CC
(V)
WAVEFORMS
+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
t
PHL
/ t
PLH
propagation delay
D
n
to Q
n
77
28
22
300
60
51
375
75
64
450
90
77
ns 2.0
4.5
6.0
Fig.8
t
PHL
/ t
PLH
propagation delay
LE to Q
n
74
27
22
270
54
46
330
68
58
405
81
69
ns 2.0
4.5
6.0
Fig.9
t
PHL
/ t
PLH
propagation delay
BI to Q
n
61
22
18
220
44
37
275
55
47
330
66
56
ns 2.0
4.5
6.0
Fig.10
t
PHL
/ t
PLH
propagation delay
LT to Q
n
41
15
12
150
30
26
190
38
33
225
45
38
ns 2.0
4.5
6.0
Fig.8
t
THL
/ t
TLH
output transition time 19
7
6
75
15
13
95
19
16
110
22
19
ns 2.0
4.5
6.0
Figs 8, 9 and
10
t
W
latch enable pulse width
LOW
80
16
14
11
4
3
100
20
17
120
24
20
ns 2.0
4.5
6.0
Fig.9
t
su
set-up time
D
n
to LE
60
12
10
14
5
4
75
15
13
90
18
15
ns 2.0
4.5
6.0
Fig.11
t
h
hold time
D
n
to LE
0
0
0
−11
−4
−3
0
0
0
0
0
0
ns 2.0
4.5
6.0
Fig.11