Datasheet

December 1990 5
Philips Semiconductors Product specification
Octal buffer/line driver; 3-state 74HC/HCT541
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
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
A
n
to Y
n
33
12
10
115
23
20
145
29
25
175
35
30
ns 2.0
4.5
6.0
Fig.6
t
PZH
/ t
PZL
3-state output
enable time
OE to Y
n
55
20
16
160
32
27
200
40
34
240
48
41
ns 2.0
4.5
6.0
Fig.7
t
PHZ
/ t
PLZ
3-state output
disable time
OE to Y
n
61
22
18
160
32
27
200
40
34
240
48
41
ns 2.0
4.5
6.0
Fig.7
t
THL
/ t
TLH
output transition time 14
5
4
60
12
10
75
15
13
90
18
15
ns 2.0
4.5
6.0
Fig.6