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参数资料
| 型号： | MC74AC245DWR2 |
| 厂商： | MOTOROLA INC |
| 元件分类： | 总线收发器 |
| 英文描述： | AC SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 |
| 封装： | PLASTIC, SOIC-20 |
| 文件页数： | 4/6页 |
| 文件大小： | 172K |
| 代理商： | MC74AC245DWR2 |
MC74AC245 MC74ACT245
5-4
FACT DATA
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
Symbol
Parameter
VCC*
(V)
74AC
Unit
Fig.
No.
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85
°C
CL = 50 pF
Unit
Fig.
No.
Min
Typ
Max
Min
Max
tPLH
Propagation Delay
3.3
1.5
5.0
8.5
1.0
9.0
ns
3-5
tPLH
An to Bn or Bn to An
5.0
1.5
3.5
6.5
1.0
7.0
ns
3-5
tPHL
Propagation Delay
3.3
1.5
5.0
8.5
1.0
9.0
ns
3-5
tPHL
An to Bn or Bn to An
5.0
1.5
3.5
6.0
1.0
7.0
ns
3-5
tPZH
Output Enable Time
3.3
2.5
7.0
11.5
2.0
12.5
ns
3-7
tPZH
Output Enable Time
5.0
1.5
5.0
8.5
1.0
9.0
ns
3-7
tPZL
Output Enable Time
3.3
2.5
7.5
12.0
2.0
13.5
ns
3-8
tPZL
Output Enable Time
5.0
1.5
5.5
9.0
1.0
9.5
ns
3-8
tPHZ
Output Disable Time
3.3
2.0
6.5
12.0
1.0
12.5
ns
3-7
tPHZ
Output Disable Time
5.0
1.5
5.5
9.0
1.0
10.0
ns
3-7
tPLZ
Output Disable Time
3.3
2.0
7.0
11.5
1.5
13.0
ns
3-8
tPLZ
Output Disable Time
5.0
1.5
5.5
9.0
1.0
10.0
ns
3-8
* 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
Symbol
Parameter
VCC
(V)
TA = +25°C
TA =
–40
°C to +85°C
Unit
Conditions
Typ
Guaranteed Limits
VIH
Minimum High Level
Input Voltage
4.5
1.5
2.0
V
VOUT = 0.1 V
Input Voltage
5.5
1.5
2.0
V
or VCC – 0.1 V
VIL
Maximum Low Level
Input Voltage
4.5
1.5
0.8
V
VOUT = 0.1 V
Input Voltage
5.5
1.5
0.8
V
or VCC – 0.1 V
VOH
Minimum High Level
Output Voltage
4.5
4.49
4.4
V
IOUT = –50 A
Output Voltage
5.5
5.49
5.4
V
*VIN = VIL or VIH
4.5
3.86
3.76
V
IOH
–24 mA
5.5
4.86
4.76
IOH
–24 mA
VOL
Maximum Low Level
Output Voltage
4.5
0.001
0.1
V
IOUT = 50 A
Output Voltage
5.5
0.001
0.1
V
*VIN = VIL or VIH
4.5
0.36
0.44
V
IOL
24 mA
5.5
0.36
0.44
IOL
24 mA
IIN
Maximum Input
Leakage Current
5.5
±0.1
±1.0
A
VI = VCC, GND
Leakage Current
5.5
±0.1
±1.0
A
VI = VCC, GND
ICCT
Additional Max. ICC/Input
5.5
0.6
1.5
mA
VI = VCC – 2.1 V
IOZT
Maximum
3-State
Current
VI (OE) = VIL, VIH
3-State
Current
5.5
±0.6
±6.0
A
VI = VCC, GND
Current
VO = VCC, GND
IOLD
Minimum Dynamic
Output Current
5.5
75
mA
VOLD = 1.65 V Max
IOHD
Output Current
5.5
–75
mA
VOHD = 3.85 V Min
ICC
Maximum Quiescent
Supply Current
5.5
8.0
80.0
A
VIN = VCC or GND
ICC
Maximum Quiescent
Supply Current
5.5
8.0
80.0
A
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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