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MAX3491：3.3V供电、10Mbps、限摆率、真RS-485/RS-422收发器

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. 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 full-duplex communication, while the MAX3483, MAX3485, and MAX3486 are designed for half-duplex communication.

关键特性 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) 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 Full-Duplex and Half-Duplex Versions Available Industry Standard 75176 Pinout (MAX3483/MAX3485/MAX3486) Current-Limiting and Thermal Shutdown for Driver Overload Protection

MAX3483、MAX3485、MAX3486：典型应用电路 应用 工业控制局域网 集成服务数字网络 低功耗RS-485/RS-422收发器 分组交换技术 电信 用于EMI敏感应用的收发器

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