The MAX1490EAEPG+ is a ±15KV ESD protected, isolated RS485/RS422 data interface in 24 pin DIP package. It is a complete, electrically isolated RS485/RS422 data communication interface solution in a hybrid microcircuit. The I/O pins are protected against ±15KV ESD shocks without latch-up. Transceivers, optocouplers and transformer provide a complete interface in a standard DIP package. A single +5V supply on logic side powers both sides of the interface. The MAX1490EA driver slew rate is not limited and it allows transmission rate up to 2.5Mbps. Drivers are short circuit current limited and 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 provides a known output ( RO pin is high) if input is open circuit. It is used in telecom, automatic test equipment, HVAC/building control networks and EMI sensitive applications.
Supply voltage range from 4.5V to 5.5V
Operating temperature range from -40°C to 85°C
Isolated data interface withstands 1260Vrms (1min) or 1520Vrms (1s) voltages
Full duplex data communication
Current limiting and thermal shutdown for driver overload protection
Operating supply current of 180mA at RL = 54ohm
Shutdown supply current of 0.2µA
Isolated outputs meets all RS485/RS422 specifications
