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參數(shù)資料
| 型號(hào)： | SN74ALS280N |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 9-BIT PARITY GENERATORS/CHECKERS |
| 中文描述： | 9位奇偶產(chǎn)生器/ |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 346K |
| 代理商： | SN74ALS280N |
SN74ALS280, SN74AS280
9-BIT PARITY GENERATORS/CHECKERS
SDAS038C – DECEMBER 1982 – REVISED DECEMBER 1994
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
Input voltage, V
I
Operating free-air temperature range, T
A
: SN74AS280
Storage temperature range
7 V
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0
°
C to 70
°
C
–65
°
C to 150
°
C
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.
recommended operating conditions
SN74AS280
MIN
NOM
UNIT
MAX
VCC
VIH
VIL
IOH
IOL
TA
Supply voltage
4.5
5
5.5
V
High-level input voltage
2
V
Low-level input voltage
0.8
V
High-level output current
–2
mA
Low-level output current
20
mA
°
C
Operating free-air temperature
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74AS280
MIN
TYP
UNIT
MAX
VIK
VOH
VOL
II
IIH
IIL
IO§
ICC
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
VCC = 4.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V
II = –18 mA
IOH = –2 mA
IOL = 20 mA
VI = 7 V
VI = 2.7 V
VI = 0.4 V
VO = 2.25 V
–1.5
V
VCC –2
V
0.35
0.5
V
0.1
mA
μ
A
mA
20
–0.5
–30
–112
mA
25
35
mA
All typical values are at VCC = 5 V, TA = 25
°
C.
§The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500
,
TA = MIN to MAX
SN74AS280
MIN
3
UNIT
MAX
tPLH
tPHL
tPLH
tPHL
Any
Σ
EVEN
12
ns
3
11
Any
Σ
ODD
3
3
12
ns
11.5
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
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