MAX3491 Datasheet | Maxim Integrated

Description The MAX3483, MAX3485, MAX3486, MAX3488, MAX3490, and MAX3491 are 3.3V, low-power transceivers for RS-485 and RS-422 munication. 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. 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-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 fullduplex munication, while the MAX3483, MAX3485, and MAX3486 are designed for half-duplex munication. Applications - - Low-Power RS-485/RS-422 Transceivers - - Telemunications - - Transceivers for EMI-Sensitive Applications - - Industrial-Control Local Area Networks Selection Table PART NUMBER MAX3483 MAX3485 MAX3486 MAX3488 MAX3490 MAX3491 GUARANTEED DATA RATE (Mbps) 0.25 10 2.5 0.25 10 10 SUPPLY VOLTAGE (V) 3.0 to 3.6 HALF/FULL DUPLEX Half Half Half Half Half Half Features - - Operate from a Single 3.3V Supply- No Charge Pump! - - Interoperable with +5V Logic - - 8ns Max Skew (MAX3485/MAX3490/MAX3491) - - Slew-Rate Limited for Errorless Data Transmission (MAX3483/MAX3488) - - 2n A Low-Current Shutdown Mode (MAX3483/MAX3485/MAX3486/MAX3491) - - -7V to +12V mon-Mode Input Voltage Range - - Allows up to 32 Transceivers on the Bus - - Full-Duplex and Half-Duplex Versions Available - - Industry Standard 75176 Pinout (MAX3483/MAX3485/MAX3486) - - Current-Limiting and Thermal Shutdown for Driver Overload Protection Ordering Information PART TEMP. RANGE PIN-PACKAGE MAX3483CPA 0°C to +70°C 8 Plastic DIP MAX3483CSA 0°C to...