RENICL3221EIAZ
Overview
The ICL3221EIAZ is a low-power, single-channel RS-232 transceiver designed for 3V to 5.5V operation. It features high-level ESD protection up to plus or minus 15kV on its RS-232 pins and includes an automatic power-down mode to conserve energy. This device is a pin-compatible upgrade for standard 5V RS-232 transceivers in modern, lower-voltage embedded systems.
Why Choose This Part
This transceiver ensures a minimum data rate of 250kbps and meets EIA/TIA-232 specifications even at 3V. It reduces BOM complexity by requiring only four small 0.1uF external capacitors for its on-chip voltage converters and provides 500mV of receiver hysteresis for superior noise immunity.
Applications
Key Specifications
Getting Started
To implement this part, connect four 0.1uF capacitors to the internal charge pump pins as specified in the datasheet for 3.3V operation. Ensure the FORCEON and FORCEOFF pins are tied correctly to manage the automatic power-down states. Logic-level signals can be interfaced directly to 3.3V or 5V microcontrollers.
