The MAX13448EESD+ is a ±80V fault protected, full duplex RS485 transceiver in 14 pin NSOIC package. The device operates from 3V to 5.5V supply and has true fail safe circuitry which provides logic high receiver output when receiver inputs are open or shorted. This enables all receiver outputs on a terminated bus to output logic high when all transmitters are disabled. The MAX13448E contains slew rate limited driver that minimizes EMI and reduces reflections caused by improperly terminated cables, it allows error free data transmission at data rates up to 500Kbps with +5V supply and 250Kbps with +3.3V supply. The device also includes hot swap capability to eliminate false transitions on the bus during power-up or hot insertion. The driver and receiver has active-high and active-low enables respectively, that can be connected together externally to serve as a direction control. The MAX13448E is typically used in control systems and utility meters.
One RS485 driver and one RS485 receiver
Operating temperature range from -40°C to 85°C
All driver outputs are protected to ±8KV ESD using human body model (HBM)
Common mode input voltage range from -7V to +12V
Supply current is 15mA at VCC = 5V
Supply current in shutdown mode is 100µA at VCC = 5V
Supply current with output shorted to ±60V is 15mA (DE = GND, RE = GND, short to +60V)
1/8 unit load allows up to 256 transceivers on the bus
