产品概览
ST3485EBDR from ST is a 3.3V RS-485/RS-422 transceiver supporting data rates up to 16Mbps. 1/4 unit load (128 nodes). Low EMI. SOIC-8. Extended ESD protection.
工作原理
Differential driver converts TX to A/B bus signals. Receiver converts bus to RX. DE/RE control driver/receiver enable. 1/4 unit load allows up to 128 nodes on bus. 3.3V single supply with 5V tolerant I/O.
Pin Description
| 针脚 | 名称 | 功能 |
|---|---|---|
| 1 | RO | Receiver output |
| 2 | RE | Rx enable |
| 3 | 可选择丢弃 | Driver enable |
| 4 | DI | Driver input |
| 5 | 接地 | 地面 |
| 6 | A | Non-inverting bus |
| 7 | B | Inverting bus |
| 8 | VCC | 3.3V supply |
应用
- High-speed RS-485 communication
- Industrial network backbones
- Profibus and Modbus at high speed
Alternative Models
| 制造商 | 部件编号 | 说明 |
|---|---|---|
| ST | ST3485ECDR | TSSOP-8 version |
| TI | SN65HVD1782DR | Similar RS-485 |