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參數(shù)資料
| 型號： | AC244 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS |
| 中文描述： | 八路緩沖器/ 3司機態(tài)輸出 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大?。?/td> | 328K |
| 代理商： | AC244 |
SCAS514E JUNE 1995 REVISED OCTOBER 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25
°
C
TYP
SN54AC244
MIN
2.9
SN74AC244
MIN
2.9
UNIT
MIN
2.9
MAX
MAX
MAX
3 V
IOH = 50
μ
A
4.5 V
4.4
4.4
4.4
5.5 V
5.4
5.4
5.4
VOH
IOH = 12 mA
3 V
2.56
2.4
2.46
V
IOH = 24 mA
4.5 V
3.86
3.7
3.76
5.5 V
4.86
4.7
4.76
IOH = 50 mA
IOH = 75 mA
5.5 V
3.85
5.5 V
3.85
3 V
0.1
0.1
0.1
IOL = 50
μ
A
4.5 V
0.1
0.1
0.1
5.5 V
0.1
0.1
0.1
VOL
IOL = 12 mA
3 V
0.36
0.5
0.44
V
IOL = 24 mA
4.5 V
0.36
0.5
0.44
5.5 V
0.36
0.5
0.44
IOL = 50 mA
IOL = 75 mA
VI = VCC or GND
VI = VCC or GND
VO = VCC or GND,
VI(OE) = VIL or VIH
VI = VCC or GND,
VI = VCC or GND
5.5 V
1.65
5.5 V
1.65
±
1
±
1
II
Data inputs
5.5 V
±
0.1
±
0.1
±
1
±
1
Control inputs
μ
A
IOZ
5.5 V
±
0.25
±
5
±
2.5
μ
A
ICC
Ci
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
IO = 0
5.5 V
4
80
40
μ
A
pF
5 V
2.5
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V
±
0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
TA = 25
°
C
TYP
SN54AC244
MIN
1
SN74AC244
MIN
1.5
UNIT
(OUTPUT)
MIN
MAX
MAX
12.5
MAX
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
A
Y
2
6.5
9
10
ns
2
6.5
9
1
12
2
10
OE
Y
2
6
10.5
1
11.5
1.5
11
ns
2.5
7.5
10
1
13
2
11
OE
Y
3
7
10
1
1
12.5
13
1.5
2.5
10.5
11.5
ns
2.5
7.5
10.5
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