Philips Semiconductors
Product specification
Octal buffer/line driver; 3-state
74HC/HCT541
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
I
CC
category: MSI
Note to HCT types
The value of additional quiescent supply current (∆I
CC
) for a unit load of 1 is given in the family specifications.
To determine
∆I
CC
per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
OE
1
OE
2
A
n
UNIT LOAD COEFFICIENT
1.50
1.00
0.70
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
T
amb
(°C)
74HCT
SYMBOL PARAMETER
+25
−40
to
+85
−40
to
+125
UNIT
V
CC
WAVEFORMS
(V)
TEST CONDITIONS
min. typ. max. min. max. min. max.
t
PHL
/ t
PLH
t
PZH
/ t
PZL
t
PHZ
/ t
PLZ
t
THL
/ t
TLH
propagation delay
A
n
to Y
n
3-state output enable time
OE to Y
n
3-state output disable time
OE to Y
n
output transition time
15
21
21
5
28
35
35
12
35
44
44
15
42
53
53
18
ns
ns
ns
ns
4.5
4.5
4.5
4.5
Fig.6
Fig.7
Fig.7
Fig.6
December 1990
6
PHILIPS [ NXP SEMICONDUCTORS ]
