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MAX3485D Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3485D Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 17 page AVAILABLE Functional Diagrams Pin Configurations appear at end of data sheet. Functional Diagrams continued at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. _______________General Description The MAX3483, MAX3485, MAX3486, MAX3488, MAX3490, and MAX3491 are 3.3V, low-power trans- ceivers for RS-485 and RS-422 communication. Each part contains one driver and one receiver. The MAX3483 and MAX3488 feature slew-rate-limited dri- vers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The par- tially slew-rate-limited MAX3486 transmits up to 2.5Mbps. The MAX3485, MAX3490, and MAX3491 transmit at up to 10Mbps. Drivers are short-circuit current limited and are protect- ed against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if both inputs are open circuit. The MAX3488, MAX3490, and MAX3491 feature full- duplex communication, while the MAX3483, MAX3485, and MAX3486 are designed for half-duplex communi- cation. ________________________Applications Low-Power RS-485/RS-422 Transceivers Telecommunications Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks ____________________________Features o Operate from a Single 3.3V Supply— No Charge Pump! o Interoperable with +5V Logic o 8ns Max Skew (MAX3485/MAX3490/MAX3491) o Slew-Rate Limited for Errorless Data Transmission (MAX3483/MAX3488) o 2nA Low-Current Shutdown Mode (MAX3483/MAX3485/MAX3486/MAX3491) o -7V to +12V Common-Mode Input Voltage Range o Allows up to 32 Transceivers on the Bus o Full-Duplex and Half-Duplex Versions Available o Industry Standard 75176 Pinout (MAX3483/MAX3485/MAX3486) o Current-Limiting and Thermal Shutdown for Driver Overload Protection ______________Ordering Information Ordering Information continued at end of data sheet. * Contact factory for for dice specifications. 3.3V-Powered, 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers 19-0333; Rev 0; 12/94 PART MAX3483CPA MAX3483CSA MAX3483C/D 0°C to +70°C 0°C to +70°C 0°C to +70°C TEMP. RANGE PIN-PACKAGE 8 Plastic DIP 8 SO Dice* PART NUMBER GUARANTEED DATA RATE (Mbps) SUPPLY VOLTAGE (V) HALF/FULL DUPLEX SLEW-RATE LIMITED DRIVER/ RECEIVER ENABLE SHUTDOWN CURRENT (nA) PIN COUNT MAX3483 0.25 Half Yes Yes 2 8 MAX3485 10 Half No Yes 2 8 MAX3486 2.5 Half Yes Yes 2 8 MAX3488 0.25 Full Yes No — 8 MAX3490 10 Full No No — 8 MAX3491 10 3.0 to 3.6 Full No Yes 2 14 ______________________________________________________________Selection Table MAX3483EPA MAX3483ESA -40°C to +85°C -40°C to +85°C 8 Plastic DIP 8 SO MAX3485CPA MAX3485CSA MAX3485C/D 0°C to +70°C 0°C to +70°C 0°C to +70°C 8 Plastic DIP 8 SO Dice* MAX3485EPA MAX3485ESA -40°C to +85°C -40°C to +85°C 8 Plastic DIP 8 SO MAX3483/MAX3485/MAX3486/ MAX3488/MAX3490/MAX3491 |
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