ADM3491AR-REEL: 3.3V, Full Duplex, 10Mbps, EIA RS-485 Transceiver
The ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 are low power, differential line transceivers designed to operate using a single 3.3 V power supply. Low power consumption, coupled with a shutdown mode, makes the ADM3483/ADM3485/ADM3488/ ADM3490/ADM3491 ideal for power-sensitive applications.
The ADM3488/ADM3490/ADM3491 feature full-duplex com-munication, while the ADM3483/ADM3485 are designed for half-duplex communication.
The ADM3483/ADM3488 feature slew rate limited drivers that minimize EMI and reduce reflections caused by improperly ter-minated cables, allowing error-free data transmission at data rates up to 250 kbps.
The ADM3485/ADM3490/ADM3491 transmit at up to 10 Mbps. The receiver input impedance is 12 kΩ, allowing up to 32 trans-ceivers to be connected on the bus. A thermal shutdown circuit prevents excessive power dissipation caused by bus contention or by output shorting. If a significant temperature increase is detected in the internal driver circuitry during fault conditions, then the thermal shutdown circuit forces the driver output into a high impedance state. If the inputs are unconnected (floating), the receiver contains a fail-safe feature that results in a logic high output state. The parts are fully specified over the commercial and industrial temperature ranges. The ADM3483/ADM3485/ADM3488/ADM3490 are available in 8-lead SOIC_N; the ADM3491 is available in a 14-lead SOIC_N.
产品应用领域 Applications
- Low-Power RS-485 Applications
- Telecom
- Industrial Process Control
- HVAC
ADM3491AR-REEL 特点
- Operate with 3.3 V supply
- Interoperable with 5 V logic
- EIA RS-485/RS-422 Compliant over Full Common-Range
- Data Rate Options: 250 kbps
- Half and Full Duplex Options
- Reduced Slew Rates for Low EMI
- Up to 32 Transceivers on a Bus
- -7V to +12V Bus Common Mode Range
- Specified over –40°C to +85°C Temperature Range
- Available in 8-Lead SOIC
ADM3491AR-REEL 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| ADM3491AR | 量产 | 14 ld SOIC | 14 | 工业 |
| ADM3491AR-REEL | 量产 | 14 ld SOIC | 14 | 工业 |
| ADM3491AR-REEL7 | 量产 | 14 ld SOIC | 14 | 工业 |
| ADM3491ARZ | 量产 | 14 ld SOIC | 14 | 工业 |
| ADM3491ARZ-REEL | 量产 | 14 ld SOIC | 14 | 工业 |
| ADM3491ARZ-REEL7 | 量产 | 14 ld SOIC | 14 | 工业 |
