參數(shù)資料
型號(hào): 74VHC244T
廠商: 意法半導(dǎo)體
英文描述: OCTAL BUS BUFFER WITH 3 STATE OUTPUTS NON INVERTED
中文描述: 八路總線緩沖器與三態(tài)輸出的非反相
文件頁數(shù): 3/8頁
文件大?。?/td> 65K
代理商: 74VHC244T
AC ELECTRICAL CHARACTERISTICS
(Inputt
r
= t
f
=3 ns)
Symbol
Parameter
Test Condition
C
L
(pF)
Value
Unit
V
CC
(V)
3.3
(*)
3.3
(*)
5.0
(**)
5.0
(**)
3.3
(*)
3.3
(*)
5.0
(**)
5.0
(**)
3.3
(*)
5.0
(**)
3.3
(*)
5.0
(**)
T
A
= 25
o
C
Min.
Typ.
-40 to 85
o
C
Min.
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Max.
8.4
11.9
5.5
7.5
10.6
14.1
7.3
9.3
14.0
9.2
1.5
1.0
Max.
10.0
13.5
6.5
8.5
12.5
16.0
8.5
10.5
16.0
10.5
1.5
1.0
t
PLH
t
PHL
Propagation Delay
Time
15
50
15
50
15
50
15
50
50
50
50
50
5.8
8.3
3.9
5.4
6.6
9.1
4.7
6.2
10.3
6.7
ns
t
PZL
t
PZH
Output Enable Time
R
L
=1K
R
L
=1K
R
L
= 1K
R
L
= 1K
R
L
=1K
R
L
=1K
ns
t
PLZ
t
PHZ
t
OSLH
t
OSHL
Output Disable Time
ns
Output to Output Skew
Time (note 1)
(*) Voltagerangeis3.3V
±
0.3V
(**) Voltagerange is 5V
±
0.5V
Note1:Parameter guaranteed bydesign. t
soLH
=|t
pLHm
-t
pLHn
|,t
soHL
=|t
pHLm
-t
pHLn
|
ns
DC SPECIFICATIONS
Symbol
Parameter
Test Conditions
V
CC
(V)
Value
Unit
T
A
= 25
o
C
Min.
Typ.
1.5
0.7V
CC
-40 to 85
o
C
Min.
1.5
0.7V
CC
Max.
Max.
V
IH
High Level Input
Voltage
2.0
V
3.0to5.5
2.0
3.0to5.5
2.0
3.0
4.5
3.0
4.5
2.0
3.0
4.5
3.0
4.5
V
IL
Low Level Input
Voltage
0.5
0.5
V
0.3V
CC
0.3V
CC
V
OH
High Level Output
Voltage
I
O
=-50
μ
A
I
O
=-50
μ
A
I
O
=-50
μ
A
I
O
=-4mA
I
O
=-8mA
I
O
=50
μ
A
I
O
=50
μ
A
I
O
=50
μ
A
I
O
=4mA
I
O
=8mA
V
I
=V
IH
orV
IL
V
O
=V
CC
orGND
1.9
2.9
4.4
2.58
3.94
2.0
3.0
4.5
1.9
2.9
4.4
2.48
3.8
V
V
OL
Low Level Output
Voltage
0.0
0.0
0.0
0.1
0.1
0.1
0.36
0.36
±
0.25
0.1
0.1
0.1
0.44
0.44
±
2.5
V
I
OZ
High Impedance
Output Leakage
Current
Input Leakage Current
Quiescent Supply
Current
5.5
μ
A
I
I
0to5.5
5.5
V
I
=5.5VorGND
V
I
=V
CC
orGND
±
0.1
4
±
1.0
40
μ
A
μ
A
I
CC
74VHC244
3/8
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