SP3485EN-L
Overview
The SP3485EN-L is a low-power, half-duplex RS-485 transceiver designed to operate from a single 3.3V supply. It is fully compliant with RS-485 and RS-422 serial protocols while supporting data rates up to 10Mbps. This component is an industry-standard solution for bridging TTL/CMOS logic to differential signaling in noise-sensitive environments.
Why Choose This Part
The transceiver features a very low shutdown current of 50uA and a typical unloaded operating current of 2mA, making it suitable for power-constrained applications. It supports a wide common-mode input voltage range from -7V to +12V and includes driver output short-circuit protection. The 3.3V operation eliminates the need for 5V rails often required by older RS-485 hardware.
Applications
Key Specifications
Getting Started
To evaluate this part, use an 8-pin NSOIC to DIP adapter for breadboarding or integrate it directly into a PCB with 100nF decoupling capacitors. Ensure the DE (Driver Enable) and RE (Receiver Enable) pins are controlled by the MCU to manage half-duplex bus direction. For testing, standard USB-to-RS485 converters can be used to interface the SP3485EN-L with a PC terminal.
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