General Description
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.

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)
♦ 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

Applications
    Low-Power RS-485/RS-422 Transceivers
    Telecommunications
    Transceivers for EMI-Sensitive Applications
    Industrial-Control Local Area Networks