Datasheet
54ACT16541, 74ACT16541
16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUPUTS
SCAS208A – JUNE 1992 – REVISED APRIL 1996
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
T
A
= 25°C 54ACT16541 74ACT16541
UNIT
PARAMETER
TEST
CONDITIONS
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
I
OH
=50µA
4.5 V 4.4 4.4 4.4
I
OH
= –
50
µ
A
5.5 V 5.4 5.4 5.4
V
OH
I
OH
=24mA
5.5 V 3.9 3.8 3.8
V
I
OH
= –
24
mA
5.5 V 4.94 4.8 4.8
I
OH
= –75 mA
†
5.5 V 3.85 3.85
I
OL
=50µA
4.5 V 0.1 0.1 0.1
I
OL
=
50
µ
A
5.5 V 0.1 0.1 0.1
V
OL
I
OL
=24mA
4.5 V 0.36 0.44 0.44
V
I
OL
=
24
mA
5.5 V 0.36 0.44 0.44
I
OL
= 75 mA
†
5.5 V 1.65 1.65
I
I
V
I
= V
CC
or GND 5.5 V ±0.1 ±1 ±1 µA
I
OZ
V
O
= V
CC
or GND 5.5 V ±0.5 ±5 ±5 µA
I
CC
V
I
= V
CC
or GND, I
O
= 0 5.5 V 8 80 80 µA
∆I
CC
‡
One input at 3.4 V,
Other inputs at V
CC
or GND
5.5 V 0.9 1 1 mA
C
i
V
I
= V
CC
or GND 5.5 V 4 pF
C
o
V
O
= V
CC
or GND 5 V 13 pF
†
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
‡
This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or V
CC
.
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM TO
T
A
= 25°C 54ACT16541 74ACT16541
UNIT
PARAMETER
(INPUT) (OUTPUT)
MIN TYP MAX MIN MAX MIN MAX
UNIT
t
PLH
A
Y
3.1 5.9 7.9 3.1 9 3.1 9
ns
t
PHL
A
Y
2.7 6.3 8.3 2.7 9.2 2.7 9.2
ns
t
PZH
OE
Y
2.8 6.5 8.9 2.8 9.7 2.8 9.7
ns
t
PZL
OE
Y
3.5 7.5 9.9 3.5 11 3.5 11
ns
t
PHZ
OE
Y
4.5 8.5 10.3 4.5 11.3 4.5 11.3
ns
t
PLZ
OE
Y
4.9 8 9.9 4.9 10.7 4.9 10.7
ns
operating characteristics, V
CC
= 5 V, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
d
Power dissi
p
ation ca
p
acitance
p
er buffer/driver
Outputs enabled
C
L
=50
p
F
f=1MHz
40
p
F
C
pd
Po
w
er
dissipation
capacitance
per
b
u
ffer/dri
v
er
Outputs disabled
C
L
=
50
pF
,
f
=
1
MH
z
9.5
pF
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design phase of development. Characteristic data and other
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change or discontinue these products without notice.