NXP PCA82C251 24V系统CAN收发方案

NXP 公司的PCA82C251是24V系统的CAN收发器, 是CAN协议控制器和物理总线间的接口,完全和“ISO 11898-24 V”标准兼容,速度高达1MBd,具有碍热保护和低电流待机模式,主要用在汽车和总线的高速应用.本文介绍PCA82C251主要特性,方框图,动态和瞬变特性测试电路和典型应用电路.

PCA82C251: CAN transceiver for 24 V systems

The PCA82C251 is the interface between a CAN protocol controller and the physical bus.The device provides differential transmit capability to the bus and differential receive capability to the CAN controller.

PCA82C251主要特性:

□ Fully compatible with the “ISO 11898-24 V” standard

□ Slope control to reduce Radio Frequency Interference (RFI)

□ Thermally protected

□ Short-circuit proof to battery and ground in 24 V powered systems

□ Low-current Standby mode

□ An unpowered node does not disturb the bus lines

□ At least 110 nodes can be connected

□ High speed (up to 1 MBd)

□ High immunity against electromagnetic interference.

PCA82C251应用:

□ High-speed applications (up to 1 MBd) in trucks and busses

图1.PCA82C251方框图

图2.PCA82C251动态特性测试电路图


图3.PCA82C251汽车瞬变测试电路图


图4.PCA82C251 CAN收发器应用框图

详情请见:
http://www.nxp.com/documents/data_sheet/PCA82C251.pdf
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