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MAX13448E：±80V Fault-Protected, Full-Duplex RS-485 Transceiver

Industry's First ±80V Fault-Protected, Full-Duplex RS-485 Transceiver

The MAX13448E full-duplex RS-485 transceiver features inputs and outputs fault protected up to ±80V (with respect to ground). The device operates from a +3.0V to +5.5V supply and features true fail-safe circuitry, guaranteeing a logic-high receiver output when the 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 features a slew-rate limited driver that minimizes EMI and reduces reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 500kbps with a +5V supply, and 250kbps with a +3.3V supply. The MAX13448E includes a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion. The driver and receiver feature active-high and active-low enables, respectively, that can be connected together externally to serve as a direction control. The MAX13448E features an 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus. All driver outputs are protected to ±8kV ESD using the Human Body Model. The MAX13448E is available in a 14-pin SO package and operates over the extended -40°C to +85°C temperature range.

Key Features ±80V Fault Protection on the RS-485 I/O Ports True Fail-Safe Receiver Hot-Swap Input Structure on DE ESD Protection on the RS-485 I/O Ports ±8kV Human Body Model Slew-Rate Limiting Facilitates Error-Free Data Transmission 1/8-Unit Load Allows Up to 256 Transceivers on the Bus -7V to +12V Common-Mode Input Voltage Range +3.0V to +5.5V Operating Supply Voltage Available in 14-Pin SO Package

MAX13448E: Functional Diagram Applications/Uses HVAC Control Systems Industrial Control Systems Motor Driver Control Systems Utility Meters

DataSheet

Parametrics

Quality and Environmental Data

• MAX13448E.pdf

Ordering Information