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参数资料
| 型号： | MC74AC244MR2 |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 总线收发器 |
| 英文描述： | AC SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封装： | EIAJ, SO-20 |
| 文件页数： | 4/8页 |
| 文件大小： | 172K |
| 代理商： | MC74AC244MR2 |
MC74AC244, MC74ACT244
http://onsemi.com
4
AC CHARACTERISTICS (For Figures and Waveforms See Section 3)
Symbol
Parameter
VCC*
(V)
74AC
Unit
Fig.
No.
TA = +25°C
CL = 50 pF
TA = 40°C
to +85°C
CL = 50 pF
Min
Typ
Max
Min
Max
tPLH
Propagation Delay
3.3
2.0
6.5
9.0
1.5
10.0
ns
35
Data to Output
5.0
1.5
5.0
7.0
1.0
7.5
tPHL
Propagation Delay
3.3
2.0
6.5
9.0
2.0
10.0
ns
35
Data to Output
5.0
1.5
5.0
7.0
1.0
7.5
tPZH
Output Enable Time
3.3
2.0
6.0
10.5
1.5
11.0
ns
37
5.0
1.5
5.0
7.0
1.5
8.0
tPZL
Output Enable Time
3.3
2.5
7.5
10.0
2.0
11.0
ns
38
5.0
1.5
5.5
8.0
1.5
8.5
tPHZ
Output Disable Time
3.3
3.0
7.0
10.0
1.5
10.5
ns
37
5.0
2.5
6.5
9.0
1.0
9.5
tPLZ
Output Disable Time
3.3
2.5
7.5
10.5
2.5
11.5
ns
38
5.0
2.0
6.5
9.0
2.0
9.5
*Voltage Range 3.3 V is 3.3 V ±0.3 V.
*Voltage Range 5.0 V is 5.0 V ±0.5 V.
DC CHARACTERISTICS
Symbol
Parameter
VCC
(V)
74ACT
Unit
Conditions
TA = +25°C
TA =
40°C to
+85°C
Typ
Guaranteed Limits
VIH
Minimum High Level
Input Voltage
4.5
1.5
2.0
V
VOUT = 0.1 V
5.5
1.5
2.0
or VCC 0.1 V
VIL
Maximum Low Level
Input Voltage
4.5
1.5
0.8
V
VOUT = 0.1 V
5.5
1.5
0.8
or VCC 0.1 V
VOH
Minimum High Level
Output Voltage
4.5
4.49
4.4
V
IOUT = 50 μA
5.5
5.49
5.4
*VIN = VIL or VIH
4.5
3.86
3.76
V
IOH
24 mA
5.5
4.86
4.76
24 mA
VOL
Maximum Low Level
Output Voltage
4.5
0.001
0.1
V
IOUT = 50 μA
5.5
0.001
0.1
*VIN = VIL or VIH
4.5
0.36
0.44
V
IOL
24 mA
5.5
0.36
0.44
24 mA
IIN
Maximum Input
Leakage Current
5.5
±0.1
±1.0
μA
VI = VCC, GND
ΔICCT
Additional Max. ICC/Input
5.5
0.6
1.5
mA
VI = VCC 2.1 V
IOZ
Maximum
3State
Current
VI (OE) = VIL, VIH
5.5
±0.5
±5.0
μA
VI = VCC, GND
VO = VCC, GND
IOLD
Minimum Dynamic
Output Current
5.5
75
mA
VOLD = 1.65 V Max
IOHD
5.5
75
mA
VOHD = 3.85 V Min
ICC
Maximum Quiescent
Supply Current
5.5
8.0
80
μA
VIN = VCC or GND
*All outputs loaded; thresholds on input associated with output under test.
Maximum test duration 2.0 ms, one output loaded at a time.
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