CBM485AMS8

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CBM485 DATASHEET Features Applications  Low Quiescent Current: 300µA  Low power RS-485 systems  - Low Quiescent Current: 300µA  DTE/DCE interface  -7V to +12V Common-Mode Input Voltage  Packet switching Range  Local area networks (LNAs)  Three-State Outputs  Data multiplexers  50ns Propagation Delays, 5ns Skew  Data concentration  Half-Duplex Version Available  Integrated services digital network (ISDN)  Operate from a Single 5V Supply  Allows up to 32 Transceivers on the Bus  Data rate: 5 Mbps  Current-Limiting and Thermal Shutdown for Driver Overload Protection  Enhanced ESD Specifications:  ±15kV IEC61000-4-2 Air Discharge  ±8kV IEC61000-4-2 Contact Discharge General Description The CBM485 is low-power transceivers for RS-485 and RS-422 communication. IC contains one driver and one receiver. The driver slew rates of the CBM485 is not limited, allowing them to transmit up to 10 Mbps. These transceivers draw between 120µA and 500µA of supply current when unloaded or fully loaded with disabled drivers. All parts operate from a single 5V supply. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit. The CBM485 is designed for half-duplex applications. FOCUS ON DEVELOPMENT • SINCERELY SERVICE • INNOVATIVE FUTURE -1- www.c oreba i. com PDF
Документация на CBM485AMS8 

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Дата модификации: 17.06.2022

Размер: 1.42 Мб

15 стр.

CBM485 操作手册 产品特点 产品应用  低静态电流：300µA  低功耗 RS-485 系统  共模输入电压范围: -7V 至+12V  DTE/DCE 接口  三态输出  数据包交换  50ns 传输延迟，5ns 偏差  本地网络 （LNAs）  可提供半双工版本  多路数据转换器  运行时 5V 单电源供电  数据集中  总线上可以接入高达 32 个接收器  集成服务数字网络 （ISDN）  数据传输速率：10 Mbps  限流和热关闭用于驱动过载保护  增强的 ESD 规范： • IEC61000-4-2 标准中±15kV 空气放电标准 • IEC61000-4-2 标准中±8kV 接触放电标准 产品描述 CBM485 是基于 RS-485 和 RS-422 通信标准的低功耗收发器，芯片 IC 包含一个驱动程序和一个接 收器。 CBM485 没有驱动摆率限制，传输速率高达 10Mbps。在没有驱动器，无负载或全负载情况下，收 发器使用 120µA 至 500µA 的供电电流工作。全部加载工作时使用 3.3V 单电源供电。驱动器通过设置驱 动输出为高阻抗状态的过热保护电路进行短路电流限制和超功率耗散保护。接收器输入具有失效保护特性， 当输入开路时，可确保逻辑高电平输出。 接收器输入在输入为开路电流时具有确保高电平逻辑输出的故障安全功能。 专芯发展 • 用芯服务 • 创芯未来 www.c oreba i. com -1- PDF
Документация на CBM485AMS8 

Subject:

Дата модификации: 21.02.2022

Размер: 1.53 Мб

15 стр.

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