ADIMAX3485ESA+T
Overview
The MAX3485ESA+T is a low-power, 10Mbps transceiver designed for RS-485 and RS-422 communication using a single 3.3V supply. This half-duplex device integrates one driver and one receiver into a compact 8-SOIC package, eliminating the need for external charge pumps while maintaining compatibility with 5V logic. It features a wide common-mode input voltage range of -7V to +12V and includes a 2uA low-current shutdown mode to extend battery life in portable applications.
Why Choose This Part
This transceiver offers high-speed performance up to 10Mbps while maintaining a very low typical supply current of 1.1mA. It simplifies system design by operating directly from a 3V to 3.6V rail without requiring charge pumps, and provides robust protection through thermal shutdown and current-limiting features.
Applications
Key Specifications
Getting Started
When designing a PCB for the MAX3485ESA+T, ensure a 0.1uF ceramic bypass capacitor is placed as close to the VCC pin as possible. For bus termination, use a 120-ohm resistor across the A and B lines at both ends of the cable to minimize reflections. Developers can verify communication using a standard USB-to-RS485 adapter and a terminal emulator to monitor the 10Mbps data stream.
