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I2C总线扩展器

P82B715
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P82B715是一款双极IC，主要用于IC总线和衍生总线系统应用。在保留IC总线所有工作模式和功能的同时，它允许通过缓冲数据(SDA)和时钟(SCL)线路来延长I2C总线上组件之间的实际间隔距离。

400 pF的IC总线电容极限会将实际通信距离限制为几米。在长电缆的两端分别使用一个P82B715（连接Lx/Ly至Lx/Ly ）会将所链接IC总线上的电缆负载减少10倍，允许总系统电容负载（连接至IC总线的所有器件、电缆、接口、走线或电线）变为大约3000 pF，同时保持各IC总线Sx/Sy侧上的负载仍低于400 pF。更长电缆或低成本、通用配线可用于链接基于IC总线的模块，而不会使噪音容限下降。只要系统的总电容小于大约3000 pF且各总线Sx/Sy连接处的电容小于400 pF，即可以星形或多点架构通过Lx/Ly端口连接多个P82B715。通过将主和/或从器件连接至各P82B715的Sx/Sy端口，此配置具备完全的多主器件通信能力。单独的P82B715不支持电压电平变换，但可在需要时使用低成本晶体管进行简单实施。Sx/Sy I/O之间的互连没有限制，且因为器件输出电平始终保持在100 mV的输入驱动电平范围内，所以P82B715兼容使用电压电平偏移的总线缓冲器，例如，PCA9511A、PCA9517、P82B96的Sx/Sy侧。

更低的VOL电平以及能使用任何主器件、从器件或总线缓冲器进行工作，是使用P82B715构成长距离总线的主要优点，缺点是无法像P82B96或PCA9600那样隔离总线电容。P82B96和PCA9600的主要缺点是隔离总线电容所需的静态电平偏移不允许这些器件配合其他带有特殊偏移电平的总线缓冲器，或配合要求VIL低于0.8 V噪音容限的主/从器件工作。第8.2节中包含成熟的快速设计点对点/多点电路，允许快速使用P82B715并提供比较波形，从而使设计师能看清P82B715和P82B96/PCA9600之间的利弊并选择最适合其应用的器件类型。

产品详情

框图

Block diagram: P82B715PN, P82B715TD

特征

  • 提供双路、双向、统一电压增益缓冲器，无需外部方向控制
  • 兼容I2C总线及其衍生产品SMBus、PMBus、DDC等
  • 逻辑信号电平可包括（但不超过）电源和接地
  • 可独立于VCC不作更改地输出逻辑信号输入电压电平
  • x10阻抗转变，但不改变逻辑电压电平
  • 供电电压范围为3 V至12 V
  • 时钟速度至少为100 kHz而允许其他系统延迟时为400 kHz
  • ESD保护：按Mil. Std 883C-3015.7超过2500 V HBM，按JESD22-A115超过400 V MM（I/O通过二极管连接至VCC和GND）
  • 已按照JEDEC标准JESD78完成闭锁测试，超过100 mA

Target Applications

  • 将I2C总线系统的总连接电容增加至大约3000 pF
  • 在大约50米或3000 pF的长电缆上驱动IC总线信号
  • 驱动x10低阻抗总线配线以改善噪音抗扰性
  • IC总线信号的多点分布使用低成本双绞电缆
  • AdvancedTCA指向的IPMB构架
  • 通过标准3 mA部件驱动30 mA Fm+器件
N true 0 PSPP82B715zh 12 包装信息 Packing Information t935 1 培训资料 Training Presentation t878 1 封装信息 Package Information t790 1 应用笔记 Application Note t789 3 支持信息 Supporting Information t531 2 数据手册 Data Sheet t520 1 用户指南 User Guide t792 3 zh zh zh 数据手册 Data Sheet 1 1 8.0 English 1442055141603701605288 PSP 150.8 KB None None documents None 1442055141603701605288 /docs/en/data-sheet/P82B715.pdf 150777 /docs/en/data-sheet/P82B715.pdf P82B715 documents N N 2011-07-03 I2C-bus extender /docs/en/data-sheet/P82B715.pdf /docs/en/data-sheet/P82B715.pdf Data Sheet N 980000996212993340 2022-12-07 pdf N en Nov 10, 2009 980000996212993340 Data Sheet Y N I2C-bus extender 应用笔记 Application Note 3 2 1.0 English 1442087957352712405094 PSP 221.4 KB None None documents None 1442087957352712405094 /docs/en/application-note/AN11084.pdf 221418 /docs/en/application-note/AN11084.pdf AN11084 documents N N 2011-10-27 Very large I2C-bus systems and long buses /docs/en/application-note/AN11084.pdf /docs/en/application-note/AN11084.pdf Application Note N 645036621402383989 2022-12-07 pdf N en Oct 26, 2011 645036621402383989 Application Note Y N Very large I2C-bus systems and long buses 3 2.0 English 1442088093504737453936 PSP 260.0 KB None None documents None 1442088093504737453936 /docs/en/application-note/AN10710.pdf 259965 /docs/en/application-note/AN10710.pdf AN10710 documents N N 2011-06-30 Features and applications of the P82B715 I2C-bus extender /docs/en/application-note/AN10710.pdf /docs/en/application-note/AN10710.pdf Application Note N 645036621402383989 2022-12-07 pdf N en Sep 6, 2010 645036621402383989 Application Note Y N Features and applications of the P82B715 I2C-bus extender 4 2.0 English 1442088722678694971185 PSP 1.1 MB None None documents None 1442088722678694971185 /docs/en/application-note/AN255.pdf 1058383 /docs/en/application-note/AN255.pdf AN255 documents N N 2011-07-04 AN255 /docs/en/application-note/AN255.pdf /docs/en/application-note/AN255.pdf Application Note N 645036621402383989 2024-03-13 pdf N en Dec 19, 2002 645036621402383989 Application Note Y N AN255 用户指南 User Guide 3 5 6.0 Japanese 1442125286808710770774ja PSP 751.0 KB None None documents None 1442125286808710770774 /docs/ja/user-guide/UM10204.pdf 750958 /docs/ja/user-guide/UM10204.pdf UM10204 documents N N 2016-07-12 I2C-bus specification and user manual /docs/ja/user-guide/UM10204.pdf /docs/ja/user-guide/UM10204.pdf User Guide N 132339537837198660 2024-10-24 ja Apr 28, 2014 132339537837198660 User Guide Y N I2C-bus specification and user manual 7.0 English NXP Semiconductors developed a simple bidirectional 2-wire bus for efficient inter-IC control. This bus is called the Inter-IC or I2C-bus. Only two bus lines are required: a serial data line (SDA) and a serial clock line (SCL). Serial, 8-bit oriented, bidirectional data transfers can be made at up to 100 kbit/s in the Standard-mode, up to 400 kbit/s in the Fast-mode, up to 1 Mbit/s in the Fast-mode Plus (Fm+), or up to 3.4 Mbit/s in the High-speed mode. 1442125286808710770774 PSP 751.0 KB None None documents None 1442125286808710770774 /docs/en/user-guide/UM10204.pdf 750958 /docs/en/user-guide/UM10204.pdf UM10204 documents N N 2016-07-12 I2C-bus specification and user manual /docs/en/user-guide/UM10204.pdf /docs/en/user-guide/UM10204.pdf User Guide N 132339537837198660 2024-10-24 pdf N en Oct 1, 2021 132339537837198660 User Guide Y N I2C-bus specification and user manual 6 1.0 English 1442125429801702674389 PSP 749.6 KB Registration without Disclaimer None documents Extended 1442125429801702674389 /secured/assets/documents/en/user-guide/UM10528.pdf 749626 /secured/assets/documents/en/user-guide/UM10528.pdf UM10528 documents Y N 2012-02-06 PCA9632 demonstration board OM13269 /webapp/Download?colCode=UM10528&lang_cd=zh /secured/assets/documents/en/user-guide/UM10528.pdf User Guide N 132339537837198660 2025-02-10 pdf Y en Feb 6, 2012 132339537837198660 User Guide Y N PCA9632 demonstration board OM13269 7 1.0 English 1442125652122716204082 PSP 133.3 KB None None documents None 1442125652122716204082 /docs/en/user-guide/UM10323.pdf 133311 /docs/en/user-guide/UM10323.pdf UM10323 documents N N 2011-07-04 UM10323 /docs/en/user-guide/UM10323.pdf /docs/en/user-guide/UM10323.pdf User Guide N 132339537837198660 2024-03-12 pdf N en Dec 15, 2008 132339537837198660 User Guide Y N UM10323 封装信息 Package Information 1 8 1.1 English Outline and soldering footprint drawings of SO8 package 1455079789802691427607 PSP 175.4 KB None None documents None 1455079789802691427607 /docs/en/package-information/SOT96-1.pdf 175406 /docs/en/package-information/SOT96-1.pdf SOT96-1 documents N N 2016-10-08 Plastic, small outline package; 8 terminals; 1.27 mm pitch; 4.9 mm x 3.9 mm x 1.75 mm body /docs/en/package-information/SOT96-1.pdf /docs/en/package-information/SOT96-1.pdf Package Information N 302435339416912908 2024-10-24 pdf N en Jan 9, 2017 302435339416912908 Package Information Y N Plastic, small outline package; 8 terminals; 1.27 mm pitch; 4.9 mm x 3.9 mm x 1.75 mm body PDF 包装信息 Packing Information 1 9 2.0 English 1442131194585714093488 PSP 237.4 KB Registration without Disclaimer None documents Extended 1442131194585714093488 /secured/assets/documents/en/packing/SOT96-1_118.pdf 237384 /secured/assets/documents/en/packing/SOT96-1_118.pdf SOT96-1_118 documents Y N 2013-04-19 SO8; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 /webapp/Download?colCode=SOT96-1_118&lang_cd=zh /secured/assets/documents/en/packing/SOT96-1_118.pdf Packing Information N 145666923842250347 2024-03-13 pdf Y en Apr 19, 2013 145666923842250347 Packing Information Y N SO8; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 培训资料 Training Presentation 1 10 0.1 English DesignCon 2003 TecForum I2C Bus Overview 1463807226428719028720 PSP 4.4 MB None None documents None 1463807226428719028720 /docs/en/supporting-information/design_con_2003_tecforum_i2c_bus_overview.pdf 4351144 /docs/en/supporting-information/design_con_2003_tecforum_i2c_bus_overview.pdf DESIGN_CON_2003_TECFORUM_I2C_B_1 documents N N 2016-07-13 DesignCon 2003 TecForum I²C-Bus Overview /docs/en/supporting-information/design_con_2003_tecforum_i2c_bus_overview.pdf /docs/en/supporting-information/design_con_2003_tecforum_i2c_bus_overview.pdf Training Presentation N 501713016990820713 2025-02-04 pdf N en Jan 27, 2003 501713016990820713 Training Presentation Y N DesignCon 2003 TecForum I²C-Bus Overview 支持信息 Supporting Information 2 11 1.0 English Footprint for Wave Soldering 1442126382106720903168 PSP 8.3 KB None None documents None 1442126382106720903168 /docs/en/supporting-information/SO-SOJ-WAVE.pdf 8260 /docs/en/supporting-information/SO-SOJ-WAVE.pdf SO-SOJ-WAVE documents N N 2013-07-15 Footprint for Wave Soldering /docs/en/supporting-information/SO-SOJ-WAVE.pdf /docs/en/supporting-information/SO-SOJ-WAVE.pdf Supporting Information N 371282830530968666 2024-10-21 pdf N en Oct 8, 2009 371282830530968666 Supporting Information Y N Footprint for Wave Soldering 12 1.0 English Footprint for reflow soldering 1442122730480711091281 PSP 8.8 KB None None documents None 1442122730480711091281 /docs/en/supporting-information/SO-SOJ-REFLOW.pdf 8792 /docs/en/supporting-information/SO-SOJ-REFLOW.pdf SO-SOJ-REFLOW documents N N 2013-07-15 Footprint for reflow soldering /docs/en/supporting-information/SO-SOJ-REFLOW.pdf /docs/en/supporting-information/SO-SOJ-REFLOW.pdf Supporting Information N 371282830530968666 2024-10-21 pdf N en Oct 8, 2009 371282830530968666 Supporting Information Y N Footprint for reflow soldering false 0 P82B715 downloads zh-Hans true 1 Y PSP Y Y 包装信息 1 /secured/assets/documents/en/packing/SOT96-1_118.pdf 2013-04-19 1442131194585714093488 PSP 9 Apr 19, 2013 Packing Information Registration without Disclaimer /secured/assets/documents/en/packing/SOT96-1_118.pdf English documents 237384 None 145666923842250347 2024-03-13 Y /webapp/Download?colCode=SOT96-1_118&lang_cd=zh SO8; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 /secured/assets/documents/en/packing/SOT96-1_118.pdf documents 145666923842250347 Packing Information N en Extended Y pdf 2.0 Y N SO8; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 237.4 KB SOT96-1_118 N 1442131194585714093488 培训资料 1 /docs/en/supporting-information/design_con_2003_tecforum_i2c_bus_overview.pdf 2016-07-13 1463807226428719028720 PSP 10 Jan 27, 2003 Training Presentation DesignCon 2003 TecForum I2C Bus Overview None /docs/en/supporting-information/design_con_2003_tecforum_i2c_bus_overview.pdf English documents 4351144 None 501713016990820713 2025-02-04 N /docs/en/supporting-information/design_con_2003_tecforum_i2c_bus_overview.pdf DesignCon 2003 TecForum I²C-Bus Overview /docs/en/supporting-information/design_con_2003_tecforum_i2c_bus_overview.pdf documents 501713016990820713 Training Presentation N en None Y pdf 0.1 N N DesignCon 2003 TecForum I²C-Bus Overview 4.4 MB DESIGN_CON_2003_TECFORUM_I2C_B_1 N 1463807226428719028720 封装信息 1 /docs/en/package-information/SOT96-1.pdf 2016-10-08 1455079789802691427607 PSP 8 Jan 9, 2017 Package Information Outline and soldering footprint drawings of SO8 package PDF None /docs/en/package-information/SOT96-1.pdf English documents 175406 None 302435339416912908 2024-10-24 N /docs/en/package-information/SOT96-1.pdf Plastic, small outline package; 8 terminals; 1.27 mm pitch; 4.9 mm x 3.9 mm x 1.75 mm body /docs/en/package-information/SOT96-1.pdf documents 302435339416912908 Package Information N en None Y pdf 1.1 N N Plastic, small outline package; 8 terminals; 1.27 mm pitch; 4.9 mm x 3.9 mm x 1.75 mm body 175.4 KB SOT96-1 N 1455079789802691427607 应用笔记 3 /docs/en/application-note/AN11084.pdf 2011-10-27 1442087957352712405094 PSP 2 Oct 26, 2011 Application Note None /docs/en/application-note/AN11084.pdf English documents 221418 None 645036621402383989 2022-12-07 N /docs/en/application-note/AN11084.pdf Very large I2C-bus systems and long buses /docs/en/application-note/AN11084.pdf documents 645036621402383989 Application Note N en None Y pdf 1.0 N N Very large I2C-bus systems and long buses 221.4 KB AN11084 N 1442087957352712405094 /docs/en/application-note/AN10710.pdf 2011-06-30 1442088093504737453936 PSP 3 Sep 6, 2010 Application Note None /docs/en/application-note/AN10710.pdf English documents 259965 None 645036621402383989 2022-12-07 N /docs/en/application-note/AN10710.pdf Features and applications of the P82B715 I2C-bus extender /docs/en/application-note/AN10710.pdf documents 645036621402383989 Application Note N en None Y pdf 2.0 N N Features and applications of the P82B715 I2C-bus extender 260.0 KB AN10710 N 1442088093504737453936 /docs/en/application-note/AN255.pdf 2011-07-04 1442088722678694971185 PSP 4 Dec 19, 2002 Application Note None /docs/en/application-note/AN255.pdf English documents 1058383 None 645036621402383989 2024-03-13 N /docs/en/application-note/AN255.pdf AN255 /docs/en/application-note/AN255.pdf documents 645036621402383989 Application Note N en None Y pdf 2.0 N N AN255 1.1 MB AN255 N 1442088722678694971185 支持信息 2 /docs/en/supporting-information/SO-SOJ-WAVE.pdf 2013-07-15 1442126382106720903168 PSP 11 Oct 8, 2009 Supporting Information Footprint for Wave Soldering None /docs/en/supporting-information/SO-SOJ-WAVE.pdf English documents 8260 None 371282830530968666 2024-10-21 N /docs/en/supporting-information/SO-SOJ-WAVE.pdf Footprint for Wave Soldering /docs/en/supporting-information/SO-SOJ-WAVE.pdf documents 371282830530968666 Supporting Information N en None Y pdf 1.0 N N Footprint for Wave Soldering 8.3 KB SO-SOJ-WAVE N 1442126382106720903168 /docs/en/supporting-information/SO-SOJ-REFLOW.pdf 2013-07-15 1442122730480711091281 PSP 12 Oct 8, 2009 Supporting Information Footprint for reflow soldering None /docs/en/supporting-information/SO-SOJ-REFLOW.pdf English documents 8792 None 371282830530968666 2024-10-21 N /docs/en/supporting-information/SO-SOJ-REFLOW.pdf Footprint for reflow soldering /docs/en/supporting-information/SO-SOJ-REFLOW.pdf documents 371282830530968666 Supporting Information N en None Y pdf 1.0 N N Footprint for reflow soldering 8.8 KB SO-SOJ-REFLOW N 1442122730480711091281 数据手册 1 /docs/en/data-sheet/P82B715.pdf 2011-07-03 1442055141603701605288 PSP 1 Nov 10, 2009 Data Sheet None /docs/en/data-sheet/P82B715.pdf English documents 150777 None 980000996212993340 2022-12-07 N /docs/en/data-sheet/P82B715.pdf I2C-bus extender /docs/en/data-sheet/P82B715.pdf documents 980000996212993340 Data Sheet N en None Y pdf 8.0 N N I2C-bus extender 150.8 KB P82B715 N 1442055141603701605288 用户指南 3 /docs/en/user-guide/UM10204.pdf 2016-07-12 1442125286808710770774 PSP 5 Oct 1, 2021 User Guide NXP Semiconductors developed a simple bidirectional 2-wire bus for efficient inter-IC control. This bus is called the Inter-IC or I2C-bus. Only two bus lines are required: a serial data line (SDA) and a serial clock line (SCL). Serial, 8-bit oriented, bidirectional data transfers can be made at up to 100 kbit/s in the Standard-mode, up to 400 kbit/s in the Fast-mode, up to 1 Mbit/s in the Fast-mode Plus (Fm+), or up to 3.4 Mbit/s in the High-speed mode. None /docs/en/user-guide/UM10204.pdf English documents 750958 None 132339537837198660 2024-10-24 N /docs/en/user-guide/UM10204.pdf I2C-bus specification and user manual /docs/en/user-guide/UM10204.pdf documents 132339537837198660 User Guide N en None Y pdf 7.0 N N I2C-bus specification and user manual 751.0 KB UM10204 N 1442125286808710770774 /secured/assets/documents/en/user-guide/UM10528.pdf 2012-02-06 1442125429801702674389 PSP 6 Feb 6, 2012 User Guide Registration without Disclaimer /secured/assets/documents/en/user-guide/UM10528.pdf English documents 749626 None 132339537837198660 2025-02-10 Y /webapp/Download?colCode=UM10528&lang_cd=zh PCA9632 demonstration board OM13269 /secured/assets/documents/en/user-guide/UM10528.pdf documents 132339537837198660 User Guide N en Extended Y pdf 1.0 Y N PCA9632 demonstration board OM13269 749.6 KB UM10528 N 1442125429801702674389 /docs/en/user-guide/UM10323.pdf 2011-07-04 1442125652122716204082 PSP 7 Dec 15, 2008 User Guide None /docs/en/user-guide/UM10323.pdf English documents 133311 None 132339537837198660 2024-03-12 N /docs/en/user-guide/UM10323.pdf UM10323 /docs/en/user-guide/UM10323.pdf documents 132339537837198660 User Guide N en None Y pdf 1.0 N N UM10323 133.3 KB UM10323 N 1442125652122716204082 true Y Products

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