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參數(shù)資料
| 型號(hào)： | VV244 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS |
| 中文描述： | 八路緩沖器/ 3驅(qū)動(dòng)態(tài)輸出 |
| 文件頁(yè)數(shù)： | 4/17頁(yè) |
| 文件大小： | 574K |
| 代理商： | VV244 |
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Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
Switching Characteristics
over recommended operating free-air temperature range, V
CC
= 5 V
±
0.5 V (unless otherwise noted) (see
Figure 1
)
Noise Characteristics
(1)
V
CC
= 5 V, C
L
= 50 pF
SN74LV244AT
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES572C–JUNE 2004–REVISED AUGUST 2005
T
A
= –40
°
C
to 85
°
C
MIN
4.4
3.8
T
A
= 25
°
C
PARAMETER
TEST CONDITIONS
V
CC
UNIT
MIN
4.4
3.8
TYP
4.5
MAX
MAX
I
OH
= –50
μ
A
I
OH
= –16 mA
I
OL
= 50
μ
A
I
OL
= 16 mA
V
I
= 5.5 V or GND
V
O
= V
CC
or GND
V
I
= V
CC
or GND,
One input at 3.4 V, Other inputs at V
CC
or GND
V
I
or V
O
= 0 to 5.5 V
V
I
= V
CC
or GND
4.5 V
4.5 V
4.5 V
4.5 V
0 to 5.5 V
5.5 V
5.5 V
5.5 V
0
V
OH
V
0
0.1
0.55
±
0.1
±
0.25
0.1
0.55
±
1
±
2.5
20
1.5
V
OL
V
I
I
μ
A
μ
A
μ
A
mA
μ
A
pF
I
OZ
I
CC
I
O
= 0
2
I
CC(1)
I
off
C
i
1.35
0.5
5
4.5
(1)
This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or V
CC
.
T
A
= 25
°
C
MIN
2.6
2.4
2.2
2.7
2.2
2.5
4
4.7
3.9
4.9
3.3
3.2
FROM
(INPUT)
TO
LOAD
PARAMETER
MIN
MAX
UNIT
(OUTPUT)
CAPACITANCE
TYP
5/4
5.4
7.7
7.7
3.9
3.9
5.9
5.9
8.2
8.2
8.8
8.8
MAX
7.4
7.4
10.4
10.4
7.7
7.7
8.9
8.9
11.4
11.4
11.4
11.4
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
sk(o)
1
1
1
1
1
1
1
1
1
1
1
1
8.5
8.5
12
12
A or B
B or A
C
L
= 15 pF
ns
OE
A or B
C
L
= 15 pF
ns
8
8
OE
A or B
C
L
= 15 pF
ns
9.5
9.5
13
13
13
13
A or B
B or A
C
L
= 50 pF
ns
OE
A or B
C
L
= 50 pF
ns
OE
A or B
C
L
= 50 pF
ns
C
L
= 50 pF
1
1
ns
T
A
= 25
°
C
MIN
TYP
PARAMETER
UNIT
MAX
V
OL(P)
V
OL(V)
V
OH(V)
V
IH(D)
V
IL(D)
Quiet output, maximum dynamic V
OL
Quiet output, minimum dynamic V
OL
Quiet output, minimum dynamic V
OH
High-level dynamic input voltage
Low-level dynamic input voltage
0.8
–0.8
1
V
V
V
V
V
–1
4
2
0.8
(1)
Characteristics are for surface-mount packages only.
4
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