Computer Controls

New Maxim MAX33012E

On March 30th 2020, Maxim Integrated officially released MAX33012E for mass production – a +5V, 5Mbps CAN Transceiver with ±65V Fault Protection, Fault Detection and Reporting, ±25V CMR, and ±45kV ESD Protection..

The MAX33012E is the first member of a +5V CAN Transceiver family with integrated protection for industrial applications (MAX33011E-MAX33015E). It has an extended ±65V fault protection on the CAN bus for equipment where overvoltage protection is required. The MAX33012E also incorporates high ±45kV ESD HBM protection and an input common mode range (CMR) of ±25V, exceeding the ISO11898 specification of -2V to +7V, and is well suited for applications where ground planes from different systems are shifting relatively to each other.

Further, the MAX33012E incorporates a fault detection feature where it monitors the CANH and CANL line for faults like overcurrent, overvoltage, and transmission failure. When a fault is detected, the FAULT pin goes high (to generate external interrupt), and the driver and receiver lines are placed in recessive mode. The system clock then drives the TXD pin and a fault code is transmitted through the RXD line back to the controller. Such advanced functionality allows quick troubleshooting and debugging the problem, providing valuable diagnostics and decreased equipment downtime. Also, like other products of the CAN transceiver family, MAX33012E features standard options to address common CAN application requirements: low-current standby mode and slow slew rate for improved EMI performance.

MAX33012E is specified for data rates up to 5Mbps. It includes a dominant timeout to prevent bus lockup caused by controller error or by a fault on the TXD input. When TXD remains in the dominant state (low) for longer than tDOM, the driver is switched to the recessive state, releasing the bus.

Other products of this family (MAX33011E, MAX33014E and MAX33015E) are on the roadmap, with plans to offer additional options like Remote Diagnostics, wide logic supply range, silent mode and compact TDFN package.

MAX33012E is available in standard 8-pin SOIC package and operates over the -40°C to +125°C temperature range.

Target applications:

  • Base Station
  • Elevator Control
  • Factory Automation
  • HVAC
  • Industrial Construction
  • Power Grid
  • Power Supply
  • Vending Machine

For demonstrating of MAX33012E functionality, evaluation and testing, Maxim Integrated offers a fully assembled PCB (OPN MAX33012ESHLD#) that could be used either as Mbed/Arduino shield or as a standalone evaluation board. Board includes also digital isolator that is used as a level translator between the CAN transceiver and the controller interface.

Get your Datasheet for the new MAX33012E [PDF]


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Datasheet Maxim MAX33012E (Download)