Datasheet
54AC16244, 74AC16244
16-BIT BUFFERS/LINE DRIVERS
WITH 3-STATE OUTPUTS
SCAS120A – MARCH 1990 – REVISED APRIL 1996
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
54AC16244 74AC16244
UNIT
MIN NOM MAX MIN NOM MAX
UNIT
V
CC
Supply voltage (see Note 4) 3 5 5.5 3 5 5.5 V
V
CC
= 3 V 2.1 2.1
V
IH
High-level input voltage
V
CC
= 4.5 V
3.15 3.15
V
V
CC
= 5.5 V 3.85 3.85
V
CC
= 3 V 0.9 0.9
V
IL
Low-level input voltage
V
CC
= 4.5 V
1.35 1.35
V
V
CC
= 5.5 V 1.65 1.65
V
I
Input voltage 0 V
CC
0 V
CC
V
V
O
Output voltage 0 V
CC
0 V
CC
V
V
CC
= 3 V –4 –4
I
OH
High-level output current
V
CC
= 4.5 V
–24 –24
mA
V
CC
= 5.5 V –24 –24
V
CC
= 3 V 12 12
I
OL
Low-level output current
V
CC
= 4.5 V
24 24
mA
V
CC
= 5.5 V 24 24
∆t/∆v Input transition rise or fall rate 0 10 0 10 ns/V
T
A
Operating free-air temperature –55 125 –40 85 °C
NOTES: 3. Unused inputs should be tied to V
CC
through a pullup resistor of approximately 5 k or greater to prevent them from floating.
4. All V
CC
and GND pins must be connected to the proper voltage supply.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
T
A
= 25°C 54AC16244 74AC16244
UNIT
PARAMETER
TEST
CONDITIONS
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
3 V 2.9 2.9 2.9
I
OH
= –50 µA
4.5 V 4.4 4.4 4.4
5.5 V 5.4 5.4 5.4
V
OH
I
OH
= –4 mA 3 V 2.58 2.48 2.48
V
I
OH
=24mA
4.5 V 3.94 3.8 3.8
I
OH
= –
24
mA
5.5 V 4.94 4.8 4.8
I
OH
= –75 mA
†
5.5 V 3.85 3.85
3 V 0.1 0.1 0.1
I
OL
= –50 µA
4.5 V 0.1 0.1 0.1
5.5 V 0.1 0.1 0.1
V
OL
I
OL
= 12 mA 3 V 0.36 0.44 0.44
V
I
OL
=24mA
4.5 V 0.36 0.44 0.44
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
I
= 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
C
i
V
I
= V
CC
or GND 5 V 4.5
p
F
C
o
V
I
= V
CC
or GND 5 V 12
pF
†
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
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design phase of development. Characteristic data and other
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