ADM3065EARZ

Overview

The ADM3065EARZ is a half-duplex RS-485 transceiver manufactured by Analog Devices Inc. It supports data rates up to 50 Mbps and operates within a supply voltage range of 3.0 V to 5.5 V. The device features ±12 kV IEC ESD protection on bus pins, ensuring robustness against electrostatic discharge without latch-up or damage. It incorporates full receiver fail-safe capabilities for open circuit, short circuit, and bus idle conditions. The component is housed in an 8-lead narrow-body SOIC package and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• IEC 61000-4-2 compliant with ±12 kV contact and air discharge protection on bus pins
• Full hot swap support allowing glitch-free power-up and power-down operations
• Thermal shutdown circuit prevents excessive power dissipation during output shorting or bus contention
• 1/4 unit load input impedance enables connection of up to 128 transceivers on the bus

Applications

• Industrial fieldbuses
• Process control systems
• Building automation networks
• PROFIBUS networks
• Motor control servo drives and encoders

Procurement Notes

Verify the specific ordering suffix 'R' indicates reel packaging versus tube packaging when sourcing. Confirm that the 'E' grade corresponds to the -40°C to +125°C operating temperature range required for your application environment. Ensure compatibility with the 8-lead SOIC_N footprint during PCB layout review.

Selection Notes

Select this model for high-speed bidirectional communication requiring 50 Mbps throughput. It is suitable for multipoint bus transmission lines where long cable runs are not the primary constraint compared to speed requirements. Verify that the system does not require a separate VIO logic supply pin, as this variant shares VCC for logic levels.

Part Context

This component belongs to the ADM306xE family of RS-485 transceivers designed for industrial environments. The family includes variants with different data rates (500 kbps vs. 50 Mbps) and duplex modes. The ADM3065E specifically targets applications needing high-speed performance within the standard RS-485 protocol framework.

Replacement Considerations

ADM3065EBRMZ offers the same electrical specifications in an 8-lead MSOP package. ADM3065EARMZ provides equivalent functionality in a 10-lead MSOP package. These alternatives maintain the 50 Mbps data rate and IEC ESD protection characteristics.