54ACT16825, 74ACT16825
18-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS155B – JANUARY 1991 – REVISED APRIL 1996
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
A
= 25°C
54ACT16825
74ACT16825
PARAMETER
TEST CONDITIONS
V
UNIT
CC
MIN
4.4
TYP
MAX
MIN
4.4
MAX
MIN
4.4
MAX
4.5 V
5.5 V
4.5 V
5.5 V
5.5 V
4.5 V
5.5 V
4.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
I
= –50 µA
OH
5.4
5.4
5.4
V
3.94
4.94
3.8
3.8
V
OH
OL
I
I
I
= –24 mA
= –75 mA
= 50 µA
OH
OH
OL
4.8
4.8
†
3.85
3.85
0.1
0.1
0.1
0.1
0.1
0.1
V
0.36
0.36
0.44
0.44
1.65
±1
0.44
0.44
1.65
±1
V
I
I
= 24 mA
OL
†
= 75 mA
OL
I
I
I
V = V
or GND
±0.1
±0.5
8
µA
µA
µA
I
I
CC
V
= V
or GND
±5
±5
OZ
CC
O
CC
V = V
or GND,
I
O
= 0
80
80
I
CC
One input at 3.4 V,
Other inputs at V
‡
5.5 V
0.9
1
1
mA
∆I
CC
or GND
CC
or GND
C
C
V = V
5 V
5 V
4
pF
pF
i
I
CC
= V or GND
CC
V
16
o
O
†
‡
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,
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
V
CC
T
A
= 25°C
TYP
7.5
54ACT16825
74ACT16825
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
ns
MIN
4.1
3.1
3.3
4.1
5.7
5.5
MAX
9.3
MIN
4.1
3.1
3.3
4.1
5.7
5.5
MAX
10.5
10.3
11
MIN
4.1
3.1
3.3
4.1
5.7
5.5
MAX
10.5
10.3
11
t
t
t
t
t
t
PLH
PHL
PZH
PZL
PHZ
PLZ
A
Y
Y
Y
7.5
9.6
7.9
9.9
ns
OE
OE
9.5
12.1
10.8
10
13.2
11.5
10.6
13.2
11.5
10.6
9
ns
8.5
operating characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
= 50 pF, f = 1 MHz
L
TYP
42
UNIT
Outputs enabled
Outputs disabled
C
Power dissipation capacitance
C
pF
pd
12
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design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
4
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