MAX3162 Datasheet

• Flexible Options for RS-232 and RS-422/485 Operation in One Package
  • Simultaneous 2TX/2RX RS-232 and Half-Duplex
  • RS-485 Transceiver Operation (MAX3162)
• Integrated Protection Increases Robustness
  • Transmitters and Receivers Protected Against Wiring Faults
  • True Fail-Safe Receiver Prevents False Transition on Receiver Input Short or Open
  • Short-Circuit Protection Over the Entire Common- Mode Voltage Range
  • Thermal Protection from Excessive Power Dissipation
  • Slew Rate Limiting Minimizes EM and Reduces Cable Reflections
• Integrated Charge-Pump Circuitry Saves Board Space
  • Eliminates the Need for a Bipolar ±12V Supply
  • Enables Single-Supply Operation From +3V to +5.5V Voltage Supply
• 1µA Shutdown Supply Current Saves Power
• Allows Up to 256 Transceivers on the Bus

• Industrial Controls
• Networking
• Peripherals
• Point-of-Sale Equipment
• RS-232 to RS-485 Interface Converters

The MAX3162 are programmable RS-232/RS-485/422 multiprotocol transceivers. The MAX3162 is configured as a 2TX/2RX RS-232 interface and a single RS-485/422 transceiver simultaneously.

All devices incorporate a proprietary low-dropout transmitter output stage and an on-board dual charge pump to allow RS-232 and RS-485/422 compliant performance from a +3V to +5.5V supply. These devices also feature pin-selectable transmitter slew rates for both RS-232 and RS-485/422 modes. Slew-rate limiting minimizes EMI and reduces reflections caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. Disabling slew-rate limiting allows these devices to transmit at data rates up to 10Mbps in RS-485/422 mode and up to 1Mbps in RS-232 mode.

The MAX3162 offer a flow-through pinout that facilitates board layout. The MAX3162 are available in tiny SSOP packages and operate from -40°C to +85°C.