MAX14781E

PRODUCTION

Half-Duplex RS-485 Transceiver with Polarity Correction

Auto Polarity Correction Protects Your System from Incorrect Installation

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $1.26

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Overview

Automatic Polarity Correction
Integrated Protection Increases Robustness
- High ESD Protection
  - ±25kV HBM ESD
  - ±15kV IEC 61000-4-2 Air Gap Discharge ESD
  - ±9kV 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

The MAX14781E +5V, half-duplex ±25kV 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 ±25kV 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

Control Systems
HVAC Networks
Power Meter Networks

Part Models: 2
1ku List Price: Starting From $1.26

Documentation

Data Sheet 1

MAX14781E: Half-Duplex RS-485 Transceiver with Polarity Correction Data Sheet (Rev.0) 12/19/2013

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX14781EESA+	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX14781EESA+T	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys