MAX14781E Datasheet | Maxim Integrated

Half-Duplex RS-485 Transceiver with Polarity Correction General Description The MAX14781E +5V, half-duplex ±25k V ESD-protected RS-485 transceiver Features integrated automatic polarity correction to ensure that miswired A and B lines are autonomously corrected, simplifying equipment and network installation. The MAX14781E includes slew-rate limited drivers that minimize EMI, allowing for error-free data transmission up to 370kbps. This device includes fail-safe circuitry, guaranteeing a logic-high receiver output when the receiver inputs are shorted or open. Hot-swap functionality on the receiver and driver enable inputs also eliminates false transitions on the bus during power-up or live insertion. The MAX14781E Features a 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus. All driver outputs are protected up to ±25k V ESD using the Human Body Model. The MAX14781E is available in an 8-pin SO package and operates over the extended -40°C to +85°C temperature range. Applications - - Power Meter Networks - - HVAC Networks - - Control Systems Benefits and Features - - Automatic Polarity Correction - - Integrated Protection Increases Robustness - High ESD Protection ±25k V HBM ESD ±15k V IEC 61000-4-2 Air Gap Discharge ESD ±9k V IEC 61000-4-2 Contact Discharge ESD - True Fail-Safe Receiver - Hot-Swap Functionality - - +5V Operation - - Low 10µA (max) Shutdown Current - - Extended -40°C to +85°C Operating Temperature Ordering Information appears at end of data sheet. For related parts and remended products to use with this part, refer to .maximintegrated./MAX14781E.related. Functional Diagram RO R RE DE DI D POLARITY CORRECT 19-6859; Rev 0; 12/13 Half-Duplex RS-485 Transceiver with Polarity...