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參數資料
| 型號： | MC74F280 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 9-BIT PARITY GENERATOR/CHECKER |
| 中文描述： | 9位奇偶產生器/校驗器 |
| 文件頁數： | 2/3頁 |
| 文件大小： | 47K |
| 代理商： | MC74F280 |
4-144
FAST AND LS TTL DATA
MC54/74F280
FUNCTION TABLE
Number of HIGH Inputs
Outputs
I0-I8
∑
Even
∑
Odd
0, 2, 4, 6, 8
H
L
1, 3, 5, 7, 9
L
H
H = HIGH Voltage Level; L = LOW Voltage Level
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54, 74
4.5
5.0
5.5
V
TA
Operating Ambient Temperature Range
54
-55
25
125
°
C
74
0
25
70
IOH
Output Current — High
54, 74
–1.0
mA
IOL
Output Current — Low
54, 74
20
mA
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for All Inputs
VIL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage for All Inputs
VIK
Input Clamp Diode Voltage
–1.2
V
VCC = MIN, IIN = –18 MA
VOH
Output HIGH Voltage
54, 74
2.5
3.4
V
IOH = –1.0 mA
VCC = 4.5 V
74
2.7
3.4
V
IOH = 1.0 mA
VCC = 4.75 V
VOL
Output Low Voltage
0.35
0.5
V
IOL = 20 mA
VCC = MIN
IIH
Input HIGH Current
20
μ
A
VCC = MAX, VIN = 2.7 V
100
μ
A
VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
–0.6
mA
VCC = MAX, VIN = 0.5 V
IOS
Short Circuit Current (Note 2)
–60
–150
mA
VCC = MAX, VOUT = 0 V
ICC
Power Supply Current
25
38
mA
VCC = MAX
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type.
2. Not more than one output should be shorted at a time, nor for more than 1 second.
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