MAX33079E

PRE-RELEASE

High-Speed Quad RS-422/RS-485 Receivers with ±65V Fault Protection, ±25V CMR, and ±25kV ESD Protection

Industry's most robust quad RS485 receiver with highest CMR, ESD and fault protection

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Overview

Integrated Protection Increases Robustness
- ±65V Fault Tolerant Quad Receiver Lines
- ±25kV ESD HBM
- ±25V Common Mode Range
- True Fail-Safe Receiver Prevents False Transition on Receiver Input Short or Open Events
- -40°C to +125°C Operating Temperature Range
Industry Standard for Easy Upgrade
- 16-Pin SOIC and QSOP Packages
- Pin Out Compatible to Industry Standard MAX3093-94 and MAX3095-96 Product Families
- Supply Voltage of +3.3V or +5.0V
- Data Rate Options of 20Mbps or 35Mbps

The MAX33076-9E is a family of robust quad channel RS-485/422 receivers with high CMR (common mode range), high fault protection, and high ESD for harsh electrical environments. This family operates from a supply range of +3.3V or +5.0V.

These devices feature a high CMR of ±25V, which helps in reception of messages when the ground planes between two nodes have large differences or large external interference from motors or other electrical noise sources. These parts have extended fault protection of ±65V where the data lines are protected from accidental shorts to local power supplies. A high ESD HBM (human body model) of ±25kV also protects the data lines from ESD strikes either during production or in the field.

The MAX33076E-79E have true fail circuitry where the receiver output is placed in a high state when open, shorted, or connected to a terminated transmission line with all drivers disabled. For part numbers MAX33076/7E, the G and Ḡ pins configure for active high and active low respectively, as well as enable or disable the outputs. They are pin compatible with MAX3095-96. For part numbers MAX33078/9E, the EN12 and EN34 pins enable Y1/Y2 and Y3/Y4 outputs respectively, and are pin compatible with MAX3093-94.

The entire family is encased in a 16-pin SOIC and QSOP package and rated over the -40°C to +125°C temperature range.

Applications

Motor Controllers
Telecom Equipment
Power Grid Equipment
CNC Machines
Laser Modules

Documentation

Data Sheet 1

MAX33076E: High-Speed Quad RS-422/RS-485 Receivers with ±65V Fault Protection, ±25V CMR, and ±25kV ESD Protection Data Sheet (Rev.1) 03/09/2022
- Open Interactive Page

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

Tools & Simulations

IBIS Model 1

MAX33079E IBIS Model

Evaluation Kits

Evaluation Kit for the MAX33076E

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Features and Benefits

Easy Evaluation of the MAX33076E
I/O interface compatibility from 1.71V to 5.5V
Proven PCB Layout
Mbed™/Arduino^® Platform Compatible
Fully Assembled and Tested

Product Details

The MAX33076E Shield is a fully assembled and tested printed circuit board (PCB) that demonstrates the functionality of the MAX33076E quad channel RS-485/422 receivers with data rate up to 20Mbps ±65V fault protection, extended ±25V common mode input range, and ±25kV ESD Human Body Model (HBM). The shield features a digital isolator, which is used as a level translator between the RS-485/422 transceiver and the controller interface.