Click here for production status of specific part numbers. MAX3483/MAX3485/ 3.3V-Powered, 10Mbps and Slew-Rate-Limited MAX3486/MAX3488/ True RS-485/RS-422 Transceivers MAX3490/MAX3491 General Description Features Operate from a Single 3.3V Supply The MAX3483, MAX3485, MAX3486, MAX3488, No Charge Pump MAX3490, and MAX3491 are 3.3V, low-power transceivers for RS-485 and RS-422 communication. Each part contains Interoperable with +5V Logic one driver and one receiver. The MAX3483 and MAX3488 8ns Max Skew (MAX3485/MAX3490/MAX3491) feature slew-rate-limited drivers that minimize EMI and Slew-Rate Limited for Errorless Data Transmission reduce reflections caused by improperly terminated (MAX3483/MAX3488) cables, allowing error-free data transmission at data rates 2nA Low-Current Shutdown Mode up to 250kbps. The partially slew-rate-limited MAX3486 (MAX3483/MAX3485/MAX3486/MAX3491) transmits up to 2.5Mbps. The MAX3485, MAX3490, and -7V to +12V Common-Mode Input Voltage Range MAX3491 transmit at up to 10Mbps. Allows up to 32 Transceivers on the Bus Drivers are short-circuit current-limited and are protected Full-Duplex and Half-Duplex Versions Available against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-imped- Industry Standard 75176 Pinout ance state. The receiver input has a fail-safe feature that (MAX3483/MAX3485/MAX3486) guarantees a logic-high output if both inputs are open Current-Limiting and Thermal Shutdown for Driver circuit. Overload Protection The MAX3488, MAX3490, and MAX3491 feature full- duplex communication, while the MAX3483, MAX3485, and Ordering Information MAX3486 are designed for half-duplex communication. PART TEMP. RANGE PIN-PACKAGE MAX3483CPA 0C to +70C 8 Plastic DIP Applications MAX3483CSA 0C to +70C 8 SO Low-Power RS-485/RS-422 Transceivers Telecommunications MAX3483C/D 0C to +70C Dice* Transceivers for EMI-Sensitive Applications MAX3483EPA -40C to +85C 8 Plastic DIP Industrial-Control Local Area Networks MAX3483ESA -40C to +85C 8 SO MAX3485CPA 0C to +70C 8 Plastic DIP MAX3485CSA 0C to +70C 8 SO MAX3485C/D 0C to +70C Dice* MAX3485EPA -40C to +85C 8 Plastic DIP MAX3485ESA -40C to +85C 8 SO Ordering Information continued at end of data sheet. * Contact factory for for dice specifications. Selection Table GUARANTEED SUPPLY DRIVER/ SHUTDOWN PART HALF/FULL SLEW-RATE PIN DATA RATE VOLTAGE RECEIVER CURRENT NUMBER DUPLEX LIMITED COUNT (Mbps) (V) ENABLE (nA) MAX3483 0.25 Half Yes Yes 2 8 MAX3485 10 Half No Yes 2 8 MAX3486 2.5 Half Yes Yes 2 8 3.0 to 3.6 MAX3488 0.25 Full Yes No 8 MAX3490 10 Full No No 8 MAX3491 10 Full No Yes 2 14 19-0333 Rev 1 5/19MAX3483/MAX3485/ 3.3V-Powered, 10Mbps and Slew-Rate-Limited MAX3486/MAX3488/ True RS-485/RS-422 Transceivers MAX3490/MAX3491 Absolute Maximum Ratings Supply Voltage (VCC) .............................................................7V 14-Pin Plastic DIP (derate 10mW/C above +70C) ...800mW Control Input Voltage (RE, DE) .................................-0.3V to 7V 14-Pin SO (derate 8.33mW/C above +70C) .............667mW Driver Input Voltage (DI) ............................................-0.3V to 7V Operating Temperature Ranges Driver Output Voltage (A, B, Y, Z) ........................-7.5V to 12.5V MAX34 C ...................................................0C to +70C Receiver Input Voltage (A, B) ...............................-7.5V to 12.5V MAX34 E ............................................... -40C to +85C Receiver Output Voltage (RO) ................. -0.3V to (V + 0.3V) Junction Temperature ......................................................+160C CC Continuous Power Dissipation (T = +70C) Storage Temperature Range .............................-65C to +160C A 8-Pin Plastic DIP (derate 9.09mW/C above +70C) ..727mW Lead Temperature (soldering, 10sec) .............................+300C 8-Pin SO (derate 5.88mW/C above +70C) ...............471mW Package Information 14 SOIC PACKAGE CODE S14+1 Outline Number 21-0041 Land Pattern Number 90-0112 Thermal Resistance, Single-Layer Board: Junction to Ambient ( ) 120 JA Junction to Case ( ) 37 JA Thermal Resistance, Four-Layer Board: Junction to Ambient ( ) 84 JA Junction to Case ( ) 34 JA For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Maxim Integrated 2 www.maximintegrated.com