SP3223ECA-L/TR
Overview
The SP3223ECA-L/TR is a 2-driver, 2-receiver RS-232 transceiver designed for portable or handheld applications. It features an efficient charge pump requiring only four 0.1uF capacitors and supports operation from a single 3.0V to 5.5V supply. The device includes a low-power shutdown mode to preserve battery life when the serial port is inactive.
Why Choose This Part
This transceiver is 5V tolerant on logic inputs while operating at 3.3V, providing flexibility in mixed-voltage systems. Its internal charge pump maintains RS-232 compliant output levels without requiring external bipolar power supplies.
Applications
Key Specifications
Getting Started
When designing with this part, place four 0.1uF ceramic capacitors as close as possible to the charge pump pins to minimize ripple. Ensure the shutdown (SHDN) and enable (EN) pins are tied to appropriate logic levels if the power-saving features are not managed by the host microcontroller.
