MAX3485

HTC Korea MAX3485 is a low-power half-duplex transceiver that meets the  specifications of RS-485 and RS-422. IC contains one driver and one receiver. The driver slew rates is not limited, allowing them to transmit up to 10Mbps. The transceiver draws 425μA of supply current when unloaded or fully loaded with disabled driver. All parts operate from a single 3.3V supply. Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that  places the driver outputs into a high-impedance states. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit. The ESD tolerance is more than ±8kV for both Human Body  Model and ±15kV for IEC61000-4-2 Air  Discharge Method on this device.

MAX3485 features :

• Single 3.3V supply
• Interoperable with +5.0V logic
• -7V to +12V common-mode input voltage range
• Three-state outputs
• Driver/ receiver enable
• Half-duplex communication
• Allows up to 32 transceivers on the bus
• Data rate up to 10 Mbps
• Current-limiting and thermal shutdown for driver
• Overload protection
• ESD specifications :
  - ±15kV IEC61000-4-2 air discharge
  - ±8kV human body model

MAX3485 applications :

• Low Power RS-485 Systems
• Telecommunications
• Packet Switching
• Industrial-control local area networks
• Data concentration
• Data multiplexers
• Integrated services digital network (ISDN)