MAX3485 Datasheet

• Operate from a Single 3.3V Supply-No Charge Pump!
• Interoperable with +5V Logic
• 8ns Max Skew (MAX3485)
• 2nA Low-Current Shutdown Mode (MAX3485)
• -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 (MAX3485)
• Current-Limiting and Thermal Shutdown for Driver Overload Protection

• Industrial Control Local Area Networks
• Integrated Services Digital Networks
• Low-Power RS-485/RS-422 Transceivers
• Packet Switching
• Telecommunications
• Transceivers for EMI-Sensitive Applications

The MAX3485 are 3.3V, low-power transceivers for RS-485 and RS-422 communication. Each part contains one driver and one receiver. The MAX3485 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 MAX3485 are designed for half-duplex communication.