5V单路RS-485收发器
Product Details
The ADM485 is a differential line transceiver suitable for high speed bidirectional data communication on multipoint bus transmission lines. It is designed for balanced data transmission and complies with both EIA Standards RS-485 and RS-422. The part contains a differential line driver and a differential line receiver. Both the driver and the receiver may be enabled independently. When disabled, the outputs are tristated.
The ADM485 operates from a single +5 V power supply. Excessive power dissipation caused by bus contention or by output shorting is prevented by a thermal shutdown circuit. This feature forces the driver output into a high impedance state if during fault conditions a significant temperature increase is detected in the internal driver circuitry.
Up to 32 transceivers may be connected simultaneously on a bus, but only one driver should be enabled at any time. It is important, therefore, that the remaining disabled drivers do not load the bus. To ensure this, the ADM485 driver features high output impedance when disabled and also when powered down.
This minimizes the loading effect when the transceiver is not being utilized. The high impedance driver output is maintained over the entire common-mode voltage range form -7V to +12 V.
The receiver contains a fail safe feature which results in a logic high output state if the inputs are unconnected floating.
The ADM485 is fabricated on BiCMOS, an advanced mixed technology process combining low power CMOS with fast switching bipolar technology. All inputs and outputs contain protection against EDS; all diver outputs feature high source and sink current capability. An epitaxial layer is used to guard against latch-up.
The ADM485 features extremely fast switching speeds. Minimal driver propagation delays permit transmission at data rates up to 5 Mbits/s while low skew minimizes EMI interference.
The part is fully specified over the commercial and industrial temperature range and is available in an 8-pin DIL/SOIC packages.
### Features and Benefits
电源电压DC 5.00V max
供电电流 2.2 mA
数据速率 5.00 Mbps
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 4.75V ~ 5.25V
安装方式 Through Hole
引脚数 8
封装 PDIP-8
长度 9.27 mm
宽度 7.24 mm
高度 3.3 mm
封装 PDIP-8
工作温度 -40℃ ~ 85℃
产品生命周期 End of Life
包装方式 Tube
制造应用 White Goods and Vending, Building Technology
RoHS标准 Non-Compliant
含铅标准 Contains Lead
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
ADM485AN ADI 亚德诺 | 当前型号 | 当前型号 |
ADM485AQ 亚德诺 | 完全替代 | ADM485AN和ADM485AQ的区别 |
ADM1485JNZ 亚德诺 | 类似代替 | ADM485AN和ADM1485JNZ的区别 |
ADM485JN 亚德诺 | 类似代替 | ADM485AN和ADM485JN的区别 |