Analog Devices MAX13223E Product Info

• Robust Protection to Withstand Load Dumps, Miswiring, and Connector Failures
  • ±70V Fault Protection
  • Overvoltage Current Limiting
  • Current Protection at Transmitter Outputs
  • Thermal Shutdown Protection
• Flexible Power Requirements Simplify Design
  • +3.0V to +5.5V Single Supply Voltage
  • True RS-232 Performance (Up to 250kbps) Even from +3.0V Supply Voltage
• AutoShutdown Simplifies Power Savings
  • Automatically Enters Shutdown Mode if RS-232 Cable is Disconnected or Receivers are Inactive Automatically Activates from Shutdown When Any Valid Transition is Sensed
  • 1µA Typical Shutdown Current

The MAX13223E is a +3.0V to +5.5V-powered EIA/TIA-232 and V.28 communications interface with fault protection on the RS-232 line interface. This allows shorts of the transmitter outputs and receiver inputs to voltages in the ±70V range without adversely affecting the MAX13223E.

The MAX13223E achieves 1µA supply current using Maxim's AutoShutdown™ feature. The MAX13223E automatically enters a low-power shutdown mode when the RS-232 cable is disconnected or the receivers are inactive. The device turns on again when a valid transition at any receiver input is sensed. A proprietary, high-efficiency, dual charge-pump power supply and a low-dropout transmitter combine to deliver true RS-232 performance from a single +3.0V to +5.5V supply.

The MAX13223E has two receivers and two drivers and is guaranteed to run at data rates of 250kbps for one transmitter switching while maintaining RS-232 output levels.

The MAX13223E operates from input voltages ranging from +3.0V to +5.5V and is available in a 20-pin, 6.5mm x 4.4mm, TSSOP package. The MAX13223E is specified over the -40°C to +85°C temperature range.

Applications

• Base Stations
• Industrial Equipment
• POS Terminal Equipment
• Telecomm Equipment
• Telematics Equipment
• Utility Meters