The ST3243E is a high performance, low power RS-232 serial cable driver/receiver with ESD protection, low voltage operation and high speed.
The ST3243E is a low-dropout RS-232 transceiver designed for operation from a 3.0V to 5.5V supply voltage. It features enhanced electrostatic discharge (ESD) protection, rated at +15KV Human Body Model and +8KV Contact Discharge, ensuring robust performance in portable devices.
The device includes three drivers and five receivers with an integrated dual charge-pump circuit. A key feature is the auto-powerdown function, which disables driver outputs to reduce supply current to 1A when no valid signal is detected, making it ideal for battery-powered equipment.
| Supply Voltage Range | 3.0V to 5.5V |
|---|---|
| ESD Protection (Human Body Model) | +15 KV |
| ESD Protection (Contact Discharge) | +8 KV |
| Supply Current (Auto-powerdown) | 1A |
| Number of Drivers and Receivers | 3 drivers, 5 receivers |
The device operates with a supply voltage ranging from 3.0V to 5.5V.
The device is available in SO-28, SSOP-28, TSSOP28, and Flip-Chip28 packages.