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Part Number Description Cross Reference Tx/Rx Duplex VSUPPLY(V) ICC(mA)(mA) Data Rate (kbps) ESD Protect.(±KV) Tx EN Rx EN ICC (Shutdn)(μA) Rx/Tx on Bus Rx Failsafe w/Inputs Slew Rate Limiting Pin/Package
AT3483E 3.3V, Slew-Rate-Limited, True RS-485/RS-422 Transceiver with ±15kV ESD Protection and Shutdown MAX3483E 1Tx + 1Rx Half 3.3 1 250 15 Yes Yes 0.002 32 Open No DIP8,SOP8
      The AT3483E, AT3485, AT3486, AT3488,AT3490E, and AT3491E are 3.3V, low-power trans- ceivers for RS-485 and RS-422 communication. Each part contains one driver and one receiver. The AT3483 and AT3488 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 AT3486 transmits up to 2.5Mbps. The AT3485, AT3490E, and AT3491E 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 logichigh output if both inputs are open circuit.The AT3488, AT3490, and AT3491 feature full- duplex communication, while the AT3483, AT3485, and AT3486 are designed for half-duplex communi- cation.
Operate from a Single 3.3V Supply— No Charge Pump!
Interoperable with +5V Logic
8ns Max Skew (AT3485/AT3490E/AT3491E)
Slew-Rate Limited for Errorless Data Transmission (AT3483/AT3488)
2nA Low-Current Shutdown Mode (AT3483/AT3485/AT3486/AT3491E)
-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 (AT3483E/AT3485/AT3486)
Current-Limiting and Thermal Shutdown for Driver Overload Protection
Low-Power RS-485/RS-422 Transceivers Telecommunications
Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks
Typical Operating Circuit


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