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參數(shù)資料
| 型號： | SN54F280B |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | DRAM |
| 英文描述： | 512Kx8 Nonvolatile SRAM, 10% Voltage Tolerance 32-DIP MODULE 0 to 70 |
| 中文描述： | 9位奇偶產(chǎn)生器/ |
| 文件頁數(shù)： | 3/5頁 |
| 文件大小： | 77K |
| 代理商： | SN54F280B |
SN54F280B, SN74F280B
9-BIT PARITY GENERATORS/CHECKERS
SDFS008A – D2932, APRIL 1986 – REVISED OCTOBER 1993
2–3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
Input voltage range (see Note 1)
Input current range
Voltage range applied to any output in the high state
Current into any output in the low state
Operating free-air temperature range: SN54F280B
–0.5 V to 7 V
–1.2 V to 7 V
–30 mA to 5 mA
–0.5 V to V
CC
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SN74F280B
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40 mA
–55
°
C to 125
°
C
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.
NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.
recommended operating conditions
SN54F280B
MIN
NOM
SN74F280B
MIN
NOM
UNIT
MAX
MAX
VCC
VIH
VIL
IIK
IOH
IOL
TA
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
High-level input voltage
2
2
V
Low-level input voltage
0.8
0.8
V
Input clamp current
–18
–18
mA
High-level output current
– 1
– 1
mA
Low-level output current
20
20
mA
°
C
Operating free-air temperature
–55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54F280B
MIN
TYP
SN74F280B
MIN
TYP
UNIT
MAX
MAX
VIK
VCC = 4.5 V,
VCC = 4.5 V
VCC = 4.75 V,
VCC = 4.5 V
VCC = 0,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
II = –18 mA
IOH = – 1 mA
IOH = – 1 mA
IOL = 20 mA
VI = 7 V
VI = 2.7 V
VI = 0.5 V
VO = 0
VI = 0
–1.2
–1.2
V
VOH
2.5
3.4
2.5
3.4
V
2.7
VOL
II
IIH
IIL
IOS§
ICC
0.3
0.5
0.3
0.5
V
0.1
0.1
mA
μ
A
μ
A
mA
20
20
– 20
– 20
–60
–150
–60
–150
26
35
26
35
mA
All typical values are at VCC = 5 V, TA = 25
°
C.
§Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
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