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Part Name
Description
74VHCT244AT View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
74VHCT244AT
OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (NON INVERTED)
STMicroelectronics
74VHCT244AT Datasheet PDF : 8 Pages
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74VHCT244A
DC SPECIFICATIONS
Symb ol
Parameter
V
IH
High Level Input
Voltage
V
IL
Low Level Input
Voltage
V
OH
High Level Output
Voltage
V
OL
Low Level Output
Voltage
I
OZ
High Impedance
Output Leakage
Current
I
I
Input Leakage Current
I
CC
Quiescent Supply
Current
∆
I
CC
Additional Worst Case
Supply Current
I
OPD
Output Leakage
Current
Test Conditions
V
CC
( V)
4.5 to 5.5
4.5 to 5.5
4.5
4.5
4.5
4.5
4.5 to 5.5
I
O
=-50
µ
A
I
O
=-8 mA
I
O
=50
µ
A
I
O
=8 mA
V
I
= V
IH
orV
IL
V
O
= 0V to 5.5V
0 to 5.5
5.5
V
I
= 5.5V or GND
V
I
= V
CC
orGND
5.5
One Input at 3.4V,
other input at V
CC
or
GND
0
V
OUT
= 5.5V
Value
T
A
= 25
o
C
Min. Typ. Max.
2
-40 to 85
o
C
Min . Max.
2
0.8
0.8
4.4 4.5
4.4
3.94
3.8
0.0 0.1
0.1
0.36
0.44
±
0.25
±
2.5
±
0.1
±
1.0
2
20
1.35
1.5
0.5
5.0
Un it
V
V
V
V
µ
A
µ
A
µ
A
mA
µ
A
AC ELECTRICAL CHARACTERISTICS
(Input t
r
= t
f
=3 ns)
Symb ol
Parameter
t
PLH
Propagation Delay
t
PHL
Time
t
PLZ
Output Disable Time
t
PHZ
t
PZL
Output Enable Time
t
PZH
(*) Voltage range is 5.0V
±
0.5V
Test Condition
V
CC
C
L
( V)
(pF)
5.0
(*)
15
5.0
(*)
50
5.0
(*)
5.0
(*)
5.0
(*)
15
R
L
= 1K
Ω
50
50
R
L
= 1K
Ω
Value
T
A
= 25
o
C
Min. Typ. Max.
5.4 7.4
5.9 8.4
7.7 10.4
8.2 11.4
8.8 11.4
-40 to 85
o
C
Min . Max.
1.0 8.5
1.0 9.5
1.0 12.0
1.0 13.0
1.0 13.0
Unit
ns
ns
ns
3/8
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