Key facts
- Brand
- STMicroelectronics
- Model
- ST485B
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-08
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DatasheetST ST485B ST485C handbook
ST ST485B ST485C handbook
Datasheet
ST485B/ST485C is a low power RS-485/RS-422 transceiver from ST company. It features low quiescent current (300 µA), single 5V supply, can work in -40 °C to 85 °C industrial temperature range. It is suitable for bidirectional data communication.
Read onlineSTMicroelectronics ST485B specifications
| Quiescent current | 300 µA typical |
|---|---|
| Supply voltage range | -7 V to 12 V common‑mode |
| Propagation delay | 30 ns |
| Input hysteresis | 70 mV typical |
| Maximum data rate | 2.5 Mbps |
| Operating temperature (automotive grade) | -55 °C to 125 °C |
| Maximum bus load | Up to 64 transceivers |
All STMicroelectronics ST485B documents by type
Datasheet 2
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the typical supply current when the device is unloaded?
The typical quiescent supply current is 300 µA.
How many transceivers can be connected on the same bus?
The transceiver allows up to 64 devices on the bus.