Product Overview
The ST1480ACDR from STMicroelectronics is a 5V RS-485/RS-422 half-duplex transceiver supporting data rates up to 20 Mbps with ±15 kV ESD protection. It features fail-safe biasing and hot-swap capability for robust industrial communication.
Key Specifications
| Function | 5V RS-485/RS-422 transceiver |
| Data Rate | Up to 20 Mbps |
| Supply Voltage | 4.75V to 5.25V |
| Common-Mode Range | -7V to +12V |
| ESD Protection | ±15 kV HBM |
| Package | SOIC-8 (3.9×4.9mm) |
Working Principle
Differential driver with controlled output transition minimizes EMI at high speed. Receiver includes open/short/idle fail-safe logic ensuring a defined logic state when the bus is floating. Hot-swap input glitch suppression prevents false driver enabling during power-up transients.
Applications
- Industrial fieldbus (Modbus, PROFIBUS)
- Building automation
- Motion control
- Power grid communication