WMSIC Electronic Components

YLPTEC CTM8251AT

ModelCTM8251AT
PackageDIP-7
BrandYLPTEC
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
YLPTEC CTM8251AT
Type
YLPTEC
Minimum package
30 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
YLPTEC
Electronic Component
CTM8251AT
Electronic Component
1
Package
DIP-7
Electronic Component
Other Module
Electronic Component
5.839g
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0264771714
Operating Voltage
4.75V~5.25V
Data
1Mbps
Isolation
Isolated
Output Interface
CANInterface
Static Current(Iq)
32mA
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

CTM8251AT 隔离式CAN收发器产品概述

一、产品定位与核心价值

CTM8251AT是YLPTEC(易川) 推出的一款带电气隔离的CAN总线收发器,专为解决CAN通信系统中的共地干扰、浪涌冲击及电磁兼容问题设计。该器件集成CAN收发功能与隔离防护于一体,可实现微控制器(MCU)与CAN总线之间的安全、高速数据交互,广泛适配工业自动化、汽车电子、智能楼宇等对通信可靠性要求较高的场景。

二、关键技术参数梳理

CTM8251AT的核心参数覆盖通信性能、隔离特性、电源适配及封装形式,具体如下:

  • 通信接口:符合ISO 11898-2标准,支持CAN2.0A/B协议,兼容主流CAN控制器(如SJA1000、MCP2515等);
  • 数据速率:最大支持1Mbps高速CAN通信,满足工业现场对实时性的需求;
  • 隔离特性:内置电气隔离,可有效阻断两端电路的地电位差干扰,提升系统抗干扰能力;
  • 工作电压:4.75V~5.25V宽电压范围,完美适配各类5V电源系统,降低电源设计复杂度;
  • 静态电流:典型值32mA,低功耗设计可减少系统待机损耗;
  • 封装形式:DIP-7直插封装,无需特殊焊接设备,便于原型开发、手工焊接及维修场景。

三、核心功能特性

1. 电气隔离防护

CTM8251AT内置隔离层,可实现CAN总线与MCU端的电气隔离,避免因不同设备地电位差导致的信号串扰、甚至器件损坏。针对工业现场常见的浪涌、静电干扰,隔离设计可显著提升系统稳定性。

2. 高速通信与信号完整性

支持最大1Mbps数据速率,同时具备总线信号整形功能,可有效抑制总线反射,保证长距离传输下的信号完整性。对于高速CAN网络(如汽车动力系统、工业机器人通信),该特性可满足实时数据交互需求。

3. 宽电压与低功耗适配

4.75V~5.25V的工作电压范围,兼容不同品牌MCU的5V电源输出,无需额外设计电压转换电路;32mA的典型静态电流,在待机或低负载状态下可降低系统功耗,适合对功耗敏感的嵌入式场景。

4. 可靠性保护机制

内置总线错误检测(如总线短路、开路检测)、热关断保护(器件过热时自动切断输出),可防止总线故障或异常工况对收发器及MCU造成损坏,提升产品使用寿命。

四、典型应用场景

CTM8251AT的隔离特性与高速通信能力,使其适用于以下场景:

  1. 工业自动化:PLC、伺服驱动器、机器人控制器的CAN总线通信,隔离工业现场的电磁干扰;
  2. 汽车电子:车载CAN网络(车身控制、动力系统)的隔离通信,避免不同模块地电位差干扰;
  3. 智能楼宇与安防:门禁系统、监控设备的CAN总线隔离通信,提升系统抗干扰能力;
  4. 新能源领域:充电桩、光伏逆变器的CAN总线数据交互,应对复杂电磁环境;
  5. 医疗设备:需要电气隔离的医疗仪器(如监护仪)数据通信,满足医疗设备安全规范。

五、选型与使用注意事项

  1. 电源匹配:确保输入电压稳定在4.75V~5.25V范围内,避免过压(>5.25V)或欠压(<4.75V)损坏器件;
  2. 总线终端:高速CAN(速率>125kbps)需在总线两端并联120Ω终端电阻,提升信号完整性;
  3. ESD防护:操作过程中需佩戴防静电手环,避免静电损坏隔离层及收发器电路;
  4. 封装适配:DIP-7封装适合原型开发或小批量生产,若需贴片安装可考虑同系列CTM8251AT的贴片封装版本。

总结

CTM8251AT作为一款高性价比隔离式CAN收发器,兼具隔离防护、高速通信、宽电压适配等核心优势,搭配DIP-7直插封装的易用性,可快速集成到各类CAN通信系统中。其在工业、汽车、医疗等领域的可靠性验证,使其成为需要提升CAN总线抗干扰能力场景的优选器件。

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