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EP2AGX45DF25C5N 北京显易科技小毕 010-51987309 QQ:2386681966

时间:2014-1-13,阅读:2235,发布企业:北京显易科技有限公司, 资讯类别:会员资讯
公司:
北京显易科技有限公司
联系人:
梁先生
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086-010-51986955
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海淀区远大路20号姜杰钢琴城文化艺术大厦E座11C2-2

凌力尔特四通道 PHY 接口实现坚固型多端口 IO-Link 主控器

凌力尔特公司 (LINEAR TECHNOLOGY CORPORATION) 推出 IO-Link 主控器 IC LTC2874,该器件整合了一个至 4 个远程 IO-Link 设备 (从设备) 的电源和通信接口。一个坚固型接口和丰富的特性集使 LTC2874 非常适合那些在严酷的工业环境中执行 IO-Link (IEC61131-9) 标准的较大系统。每个主控器 IC 可控制 4 个从设备,LTC2874 缩减了电路板空间、降低了复杂性和成本,同时提高了可靠性。

LTC2874 的独特特性包括产生自动唤醒请求 (WURQ) 和一种用于从设备启动的输出电源电流提升能力。WURQ 发生器可产生具有正确极性的自定时唤醒脉冲,从而降低了对微控制器的需求。安全机制负责管理多端口和重复 WURQ 以防止热过载并保持无差错通信。电流提升脉冲发生器完全执行添加至 IO-Link v1.1.1 规范中的启动电流脉冲要求。

LTC2874 为 IO-Link 标准指定的物理接口增加了坚固性和可靠性。内置的热插拔 (Hot Swap™) 控制器及在电源接口的外部 N 沟道 MOSFET 可于启动和故障情况下保护连接的设备,防止其受到浪涌电流的影响。在数据线接口中的集成式 ±50V 阻塞二极管可以防止故障和高电压偏移,使其非常适合驱动长达 20m 电缆的严苛 PLC 环境。该数据线可承受 ±8kV HBM ESD 而不会发生锁断或损坏,所有其他引脚在 ±6kV HBM 条件下也得到保护。SPI 接口允许主机配置和对多种参数的监测,包括输入电源电压、输出电源良好状态、以及故障事件。对热插拔电流限制折返、断路器定时器、噪声抑制滤波器和电流吸收的可编程控制可以为不同系统中的通信和故障处理增加灵活性。

LTC2874 还具备其他功能,使其适用于多种应用。8V 至 30V 的工作电压可支持传统标准 I/O (SIO) 模式和其他工业应用。驱动器输出可以通过并联来实现 IO-Link 所要求的 4x 驱动能力。信号引脚与 IEC 61131-2 类型 2 及类型 3 数字 I/O 相兼容。而电缆感测功能可以确保电源输出只有在电缆连接上之后才开启,从而允许进行热插拔操作而并无火花,否则这会缩短连接器的使用寿命。

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KSC421J70SHKSC422G 70SH LFSKSC441G 70 SHKSC5019MBUKSC5021F-R
KSC5025-RTU (C5025-R)KSC5027FRYDTUKSC5027RHTUKSC5088KSC5802-TBTU
KSC621V30-LFSKSD1408YTUKSD1621STFKSD5027-RKSD5041RTA
KSD560RTSTUKSD882FKSD882-YSTUKSE13003-1KSE13003AS
KSE13003H2-HZKSE13005HKSE13005H2TUKSE13005HIKSE13007-H2
KSE13009H1/H2KSE-1405A-15KSE2-7TP1KSE340/350KSE5-9TP1
KSF22005KSH127-ITUKSH8721BTKSJ0M21080SHKSK161-Y
KSN-1711N-1KSP45TFKSP5MA1760AKSP5MA2140AKSPF5MF190
KSS210AKSS241GLFSKST10-MTF/3EKST14TFKST2222
KST56MTFKSZ8001LI A3KSZ8841-16MQL A6KT110KPJKT11B0JM
KT130 E6327KT201KT21874R75%ACKT21875%B4R7KT2209
KT512K\32KTA1001/IQKTA1015YKTA1015-YKTA1070-Y-TA
KTA1204KTA1242KTA1266LKTA1267LKTA1270-O
KTC3880S-Y/AQYKTC388AK2870-01LK2874-01LK2908-01L
K2917K2953MK2968K2N80K300A1
K330A2K3456K355CK3955LK3N4C1APTDGC12
K3N5C1DJ4D-GC09T00(K3N5C1K4643232E-TC70K4D261638E-TC50T00K4D263238EGC36K4D263238FUC50

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