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參數(shù)資料
| 型號： | MC74F40 |
| 廠商： | Motorola, Inc. |
| 英文描述： | DUAL 4-INPUT NAND BUFFER |
| 中文描述： | 雙4輸入與非緩沖 |
| 文件頁數(shù)： | 2/2頁 |
| 文件大?。?/td> | 35K |
| 代理商： | MC74F40 |
4-28
FAST AND LS TTL DATA
MC74F40
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
VIL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage
VIK
Input Clamp Diode Voltage
–1.2
V
VCC = MIN, IIN = –18 mA
VOH
74
2.0
V
IOH = –15 mA
IOH = –1.0 mA
VCC = 4.50 V
Output HIGH Voltage
74
2.4
V
74
2.7
V
IOH = –1.0 mA
VCC = 4.75 V
VOL
Output LOW Voltage
0.55
V
IOL = 64 mA
VCC = MIN
IIH
Input HIGH Current
20
μ
A
VCC = MAX, VIN = 2.7 V
0.1
mA
VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
–1.2
mA
VCC = MAX, VIN = 0.5 V
IOS
Output Short Circuit Current (Note 2)
–100
–225
mA
VCC = MAX, VOUT = 0 V
ICC
Power Supply Current
Total, Output HIGH
4
mA
VCC = MAX, VIN = GND
Total, Output LOW
17
mA
VCC = MAX, VIN = Open
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.
AC CHARACTERISTICS
74F
74F
TA = +25
°
C
TA = 0
°
C to 70
°
C
VCC = 5.0 V
±
10%
VCC = +5.0 V
CL = 50 pF
CL = 50 pF
Symbol
Parameter
Min
Max
Min
Max
Unit
tPLH
Propagation Delay
1.5
6.0
1.5
7.0
ns
tPHL
Propagation Delay
1.0
5.0
1.0
5.5
ns
FUNCTION TABLE
Inputs
Output
A
B
C
D
Y
L
X
X
X
H
X
L
X
X
H
X
X
L
X
H
X
X
X
L
H
H
H
H
H
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
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