ADM2486: iCoupler(R) High Speed Isolated RS-485 Tranceiver
The ADM24861 differential bus transceiver is an integrated, galvanically isolated component designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and complies with ANSI TIA/EIA RS-485-A and ISO 8482:1987(E).
The device employs Analog Devices’ iCoupler technology to combine a 3-channel isolator, a 3-state differential line driver, and a differential input receiver into a single package. The logic side of the device can be powered with either a 5 V or a 3 V supply while the bus side is powered with a 5 V supply.
The ADM2486 driver has an active high enable. The driver differential outputs and the receiver differential inputs are connected internally to form a differential input/output port that imposes minimal loading on the bus when the driver is disabled or when VDD1 or VDD2 =0. Also provided is an active high receiver disable that causes the receive output to enter a high impedance state.
The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention might cause excessive power dissapation.
ADM2486 特点
- High-Speed Isolated RS-485 Transceiver
- Electrical Data Isolation 2500 VRMS for 1 min (UL 1577 Certification)
- PROFIBUS Compliant
- Complies with ANSI TIA/EIA RS-485-A-1998 and ISO 8482:1987(E)
- High Data Rate: 20 Mbaud (NRZ)
- Low Power Operation:
DC–5 MBd: 5.7 mA max
12 MBd: 8.5 mA max
20 MBd: 10 mA max - Suitable for 5 V or 3 V Operation (VDD1)
- High Common Mode Transient Immunity: >25 KV/us
ADM2486 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| ADM2486BRW | 量产 | 16 ld SOIC - Wide | 16 | 工业 |
| ADM2486BRW-REEL | 量产 | 16 ld SOIC - Wide | 16 | 工业 |
| ADM2486BRWZ | 量产 | 16 ld SOIC - Wide | 16 | 工业 |
| ADM2486BRWZ-REEL | 量产 | 16 ld SOIC - Wide | 16 | 工业 |