The ST3485E is ±15 kV ESD protected, 3.3 V low power transceiver for RS-485 and RS-422 communications.
The ST3485EB and ST3485EC are half-duplex transceivers designed for RS-485 and RS-422 communications. These devices operate from a single 3.3 V supply and feature robust protection, including +15 kV ESD protection using the Human Body Model and +8 kV IEC 1000-4-2 contact discharge protection. They are interoperable with 5 V logic and guarantee a data rate of up to 12 Mbps.
| Supply Voltage | 3.3 V (3 V to 3.6 V) |
|---|---|
| Data Rate | Up to 12 Mbps |
| ESD Protection (HBM) | +15 kV |
| ESD Protection (Contact) | +8 kV |
| Common Mode Input Range | -7 V to 12 V |
| Max Bus Transceivers | 64 |
| Operating Temperature (ST3485EB) | -40 to 85 °C |
| Operating Temperature (ST3485EC) | 0 to 70 °C |
The device guarantees a data rate of at least 12 Mbps.
No, the device operates from a single 3.3 V supply without a charge pump.
The transmitter outputs are protected to +15 kV using the Human Body Model.