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參數(shù)資料
| 型號： | SN54ACT1284 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 7-Bit Bus Interfaces With 3-State Outputs(7位總線接口(三態(tài)輸出)) |
| 中文描述： | 7與3位總線接口態(tài)輸出（7位總線接口（三態(tài)輸出）） |
| 文件頁數(shù)： | 2/5頁 |
| 文件大?。?/td> | 121K |
| 代理商： | SN54ACT1284 |
SN54ACT1284, SN74ACT1284
7-BIT BUS INTERFACES
WITH 3-STATE OUTPUTS
SCAS459B – NOVEMBER 1994 – REVISED APRIL 1996
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic diagram (positive logic)
HD
DIR
A1, A2, A3, A4
A5, A6, A7
B1, B2, B3, B4
B5, B6, B7
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
B-port input and output voltage range, V
I
and V
O
(see Notes 1 and 2)
A-port input and output voltage range, V
I
and V
O
(see Note 1)
Input clamp current, I
IK
(V
I
< 0 or V
I
> V
CC
)
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
CC
)
Continuous output current, I
O
(V
O
= 0 to V
CC
)
Continuous current through V
CC
or GND
Package thermal impedance,
θ
JA
(see Note 3): DB package
–0.5 V to 7 V
–2 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
–0.5 V to V
CC
+ 0.5 V
±
20 mA
±
50 mA
±
50 mA
±
200 mA
115
°
C/W
97
°
C/W
67
°
C/W
128
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DW package
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N package
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The ac input voltage pulsewidth is limited to 20 ns if the input voltage goes more negative than –0.5 V.
3. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
–65
°
C to 150
°
C
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