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MAX3485

更新时间： 2023-12-20 18:44:31
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
17页 3123K
描述
3.3V供电、10Mbps、限摆率、真RS-485/RS-422收发器

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中文翻译

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MAX3485 数据手册

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Click here for production status of specific part numbers.  
MAX3483/MAX3485/  
MAX3486/MAX3488/  
MAX3490/MAX3491  
3.3V-Powered, 10Mbps and Slew-Rate-Limited  
True RS-485/RS-422 Transceivers  
General Description  
Features  
● Operate from a Single 3.3V Supply—  
The MAX3483, MAX3485, MAX3486, MAX3488,  
MAX3490, and MAX3491 are 3.3V, low-power transceivers for  
RS-485 and RS-422 communication. Each part contains  
one driver and one receiver. The MAX3483 and MAX3488  
feature slew-rate-limited drivers that minimize EMI and  
reduce reflections caused by improperly terminated  
cables, allowing error-free data transmission at data rates  
up to 250kbps. The partially slew-rate-limited MAX3486  
transmits up to 2.5Mbps. The MAX3485, MAX3490, and  
MAX3491 transmit at up to 10Mbps.  
No Charge Pump!  
● Interoperable with +5V Logic  
● 8ns Max Skew (MAX3485/MAX3490/MAX3491)  
● Slew-Rate Limited for Errorless Data Transmission  
(MAX3483/MAX3488)  
● 2nA Low-Current Shutdown Mode  
(MAX3483/MAX3485/MAX3486/MAX3491)  
● -7V to +12V Common-Mode Input Voltage Range  
● Allows up to 32 Transceivers on the Bus  
Drivers are short-circuit current-limited and are protected  
against excessive power dissipation by thermal shutdown  
circuitry that places the driver outputs into a high-imped-  
ance state. The receiver input has a fail-safe feature that  
guarantees a logic-high output if both inputs are open  
circuit.  
● Full-Duplex and Half-Duplex Versions Available  
● Industry Standard 75176 Pinout  
(MAX3483/MAX3485/MAX3486)  
● Current-Limiting and Thermal Shutdown for Driver  
Overload Protection  
The MAX3488, MAX3490, and MAX3491 feature full-  
duplex communication, while the MAX3483, MAX3485, and  
MAX3486 are designed for half-duplex communication.  
Ordering Information  
PART  
TEMP. RANGE  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
-40°C to +85°C  
-40°C to +85°C  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
8 Plastic DIP  
8 SO  
MAX3483CPA  
MAX3483CSA  
MAX3483C/D  
MAX3483EPA  
MAX3483ESA  
MAX3485CPA  
MAX3485CSA  
MAX3485C/D  
MAX3485EPA  
MAX3485ESA  
Applications  
● Low-Power RS-485/RS-422 Transceivers  
● Telecommunications  
● Transceivers for EMI-Sensitive Applications  
● Industrial-Control Local Area Networks  
Dice*  
8 Plastic DIP  
8 SO  
8 Plastic DIP  
8 SO  
Dice*  
8 Plastic DIP  
8 SO  
Ordering Information continued at end of data sheet.  
* Contact factory for for dice specifications.  
Selection Table  
GUARANTEED  
DATA RATE  
(Mbps)  
SUPPLY  
VOLTAGE  
(V)  
DRIVER/  
RECEIVER  
ENABLE  
SHUTDOWN  
CURRENT  
(nA)  
PART  
NUMBER  
HALF/FULL  
DUPLEX  
SLEW-RATE  
LIMITED  
PIN  
COUNT  
MAX3483  
MAX3485  
MAX3486  
MAX3488  
MAX3490  
MAX3491  
0.25  
10  
Half  
Half  
Half  
Full  
Full  
Full  
Yes  
No  
Yes  
Yes  
Yes  
No  
2
2
8
8
2.5  
0.25  
10  
Yes  
Yes  
No  
2
8
3.0 to 3.6  
—
—
2
8
No  
8
10  
No  
Yes  
14  
19-0333; Rev 1; 5/19  
1234567...17

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