MAX33045E

PRODUCTION

20Mbps, Half-Duplex RS-485/RS-422 Transceivers with ±40kV ESD Protection

Highest ESD RS-485 with Dual Voltage, 1/8 Load and ±25V Fault Protection

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $1.37

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Overview

Integrated Protection Increases Robustness
- ±25V Fault-Protection Range on Driver Outputs/Receiver Inputs
- High-ESD Protection
  - ±40kV HBM ESD per JEDEC JS-001
  - ±15kV Air-Gap ESD per IEC 61000-4-2
  - ±10kV Contact ESD per IEC 61000-4-2
- Short-Circuit-Protected Outputs
- True Fail-Safe Receiver Prevents False Transition on Receiver Input Short or Open Events
- Hot-Swap Capability Eliminates False Transitions on Receiver Input Shorts or Open Events
High-Speed Data Rates up to 20Mbps
Enables up to 256 Nodes on the Bus
Wide -40°C to +125°C Operating Temperature Range

The MAX33045E/MAX33046E is a half-duplex RS-485/422 transceiver that operates at either 3.3V or 5.0V supply rail for ease of design. Both devices feature enhanced protection for applications in harsh environments. All driver outputs and receiver inputs are protected with both high-fault and high-ESD (electrostatic discharge) protection.

The A/B lines have up to ±25V fault protection for accidental shorts with local power supplies and ±40kV ESD (Human Body Model) HBM protection. They are also rated up to ±15kV Air-Gap Discharge and ±10kV Contact Discharge per IEC 61000-4-2. Both features ensure robust protection in harsh industrial environments. 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 true fail-safe feature that guarantees a logic-high output if both inputs are open or short circuited.

The MAX33045E is rated for a 500kbps (min) data rate, and the MAX33046E is rated for a 20Mbps data rate.

Both devices are packaged in an 8-pin SOIC with an operating ambient temperature from -40°C to +125°C.

Applications

Backplane Buses
Encoder Interfaces
Factory Automation Equipment
Motion Controllers
Programmable Controller
Telecommunication Equipment

Part Models: 2
1ku List Price: Starting From $1.37

Documentation

Data Sheet 1

MAX33045E-MAX33046E: 20Mbps, Half-Duplex RS-485/RS-422 Transceivers with ±40kV ESD Protection Data Sheet (Rev.0) 04/23/2021

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
MAX33045EASA+	8-SOIC_N-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX33045EASA+T	8-SOIC_N-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Tools & Simulations

IBIS Model 1

MAX33045E IBIS Model

Evaluation Kits

Evaluation Kit for the MAX33046E

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Features and Benefits

Easy Evaluation of the MAX33046E/MAX33045E
I/O Interface Compatibility from 1.71V to 5.5V
Proven PCB Layout
Arduino^®/Arm^® Mbed™ Platform Compatible
Fully Assembled and Tested

Product Details

The MAX33046E Shield is a fully assembled and tested printed circuit board (PCB) that demonstrates the functionality of the MAX33046E half-duplex RS-485 transceiver with ±25V fault protection, extended -7V to +12V common-mode range, and ±40kV ESD Human Body Model (HBM) for A/B data lines. The shield features a digital isolator which is used as a level translator between the RS-485 transceiver and the controller interface.