ADM2484E: Signal Isolated RS-485 Transceiver Full/Half Duplex
The ADM2484E is an isolated data transceiver with ±15 kV ESD protection suitable for high speed, half- or full-duplex communication on multipoint transmission lines. For half-duplex operation, the transmitter outputs and receiver inputs share the same transmission line. Transmitter Output Pin Y links externally to Receiver Input Pin A, and Transmitter Output Pin Z links externally to Receiver Input Pin B.
Designed for balanced transmission lines, the ADM2484E complies with ANSI TIA/EIA RS-485-A-1998 and ISO 8482: 1987(E). The device employs Analog Devices, Inc., iCoupler(R) technology to combine a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package.
The differential transmitter outputs and receiver inputs feature electrostatic discharge circuitry that provides protection up to ±15 kV using the human body model (HBM). The logic side of the device can be powered with either a 5 V or a 3.3 V supply, whereas the bus side requires an isolated 3.3 V supply.
The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention causes excessive power dissipation.
Applications- Isolated RS-485/RS-422 interfaces
- Industrial field networks
- INTERBUS
- Multipoint data transmission systems
ADM2484E 特点
- Isolated, RS-485/RS-422 transceiver, configurable as half- or full-duplex
- ±15 kV ESD protection on RS-485 input/output pins
- 500 kbps data rate
- Complies with ANSI TIA/EIA RS-485-A-1998 and ISO 8482: 1987(E)
- Suitable for 5 V or 3.3 V operation (VDD1)
- High common-mode transient immunity: >25 kV/μs
- True fail-safe receiver inputs
- See Data Sheet for Additional Information
ADM2484E 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| ADM2484EBRWZ | 量产 | 16 | 工业 | |
| ADM2484EBRWZ-REEL7 | 量产 | 16 | 工业 |