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參數(shù)資料
| 型號(hào)： | MAX253 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Transformer Driver for Isolated RS-485 Interface |
| 中文描述： | 變壓器驅(qū)動(dòng)器，用于隔離型RS-485接口 |
| 文件頁(yè)數(shù)： | 2/16頁(yè) |
| 文件大?。?/td> | 230K |
| 代理商： | MAX253 |
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M
Transformer Driver for
Isolated RS -485 Interfac e
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
) ...............................................-0.3V to +7V
Control Input Voltages (SD, FS) .................-0.3V to (V
CC
+ 0.3V)
Output Switch Voltage (D1, D2).............................................12V
Peak Output Switch Current (D1, D2)......................................1A
Average Output Switch Current (D1, D2) .........................200mA
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW
SO (derate 5.88mW/°C above +70°C)..........................471mW
μMAX (derate 4.10mW/°C above +70°C) .....................330mW
CERDIP (derate 8.00mW/°C above +70°C)..................640mW
ELECTRICAL CHARACTERISTICS
(V
CC
= 5V ±10%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°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 in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1:
Operating supply current is the current used by the MAX253 only, not including load current.
Note 2:
Shutdown supply current includes output switch-leakage currents.
PARAMETER
MIN
TYP
1.5
350
200
MAX
4.0
500
300
UNITS
Shutdown Input Threshold
0.8
μA
pA
2.4
V
Shutdown Supply Current (Note 2)
0.4
μA
Operating Supply Current (Note 1)
0.45
5.0
mA
Shutdown Input Leakage Current
10
2.4
V
FS Input Threshold
0.8
50
μA
pA
V
Switch On Resistance
250
150
kHz
Switch Frequency
FS Input Leakage Current
10
2.2
Start-Up Voltage
2.5
CONDITIONS
FS = V
CC
Low
High
SD = V
CC
No load, SD = 0V, FS low
High
Low
FS = 0V
D1, D2; 100mA
FS = V
CC
or open
FS = 0V
Operating Temperature Ranges
MAX253C_ _ ........................................................0°C to +70°C
MAX253E_ _ .....................................................-40°C to +85°C
MAX253MJ A ...................................................-55°C to +125°C
J unction Temperatures
MAX253C_ _/E_ _..........................................................+150°C
MAX253MJ A .................................................................+175°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
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