可扩展的5通道I2C总线集线器 | NXP 半导体

安全互联汽车

工业

消费电子

技术

可扩展的5通道I2C总线集线器

PCA9518A 正常供应

PCA9518A是一款CMOS集成电路，主要用于I²C总线和SMBus系统应用。

在保留I²C总线系统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)线路以允许扩展I²C总线，从而可使用几乎无限条400 pF的总线。

400 pF的I²C总线电容极限会限制器件数和总线长度。使用PCA9518A能使系统设计师将总线分成集线器的若干个区段，没有数目限制，其中任何区段至区段转变只会看到一个转发器延迟且每个区段上均有多主器件能力。

使用多个PCA9518A部件，可使用扩展引脚使用任意宽度的集线器（五的倍数）1。

PCA9518A是PCA9518的宽范围电压（2.3 V至3.6 V）版本且还改善部分节电性能，在VDD低于2.0 V时保持I²C总线I/O引脚处于高阻抗状态。

PCA9518集群无法串联PCA9515/16或另一个PCA9518集群。由于EXPxxxn引脚允许从集群内的一个PCA9518发送I²C总线信号至另一个PCA9518或从一个PCA9518接收另一个PCA9518的I²C总线信号，所以多个PCA9518器件可与其他PCA9518器件成组为任何大小的集群。由于没有方向引脚，所以使用稍有不同的“合法”低电压以避免集群中独立转发器输入和输出之间的锁定状况。任何PCA9518器件的输入上施加的“常规低电平”会以稍高的值作为“缓冲低电平”传输至PCA9518集群中所有已启用输出。当此“缓冲低电平”应用至串联的PCA9515和PCA9516或独立的PCA9518集群（未通过EXPxxxn引脚连接）时，第二个PCA9515和PCA9516或PCA9518集群不会将其识别为“常规低电平”且不会再次将其作为“缓冲低电平”传输。PCA9510/9511/9513/9514和PCA9512无法与任一PCA9515和PCA9516或PCA9518串联使用，但可与其自身串联使用，因为其使用切换而非静态偏移以避免锁定状况。此注意事项也适用于这些器件的“A”版本。

1

更多

查看产品图片

产品详情

框图

Block diagram: PCA9518AD, PCA9518APW

获取框图PDF

特征

  • 可扩展5通道、双向缓冲器
  • 兼容I²C总线和SMBus
  • 高电平有效的独立转发器使能输入
  • 开漏输入/输出
  • 无锁定操作
  • 支持横跨转发器的仲裁和时钟展宽
  • 适应标准模式和快速模式I²C总线器件以及多主器件
  • 断电高阻抗I²C总线引脚
  • 2.3 V至3.6 V的工作电源电压范围
  • 5 V耐受I²C总线和使能引脚
  • 0 Hz至400 kHz时钟频率²
  • ESD保护：按JESD22-A114超过2000 V HBM，按JESD22-A115超过200 V MM，按JESD22-C101超过1000 V CDM
  • 已按照JEDEC标准JESD78完成闭锁测试，超过100 mA
  • 提供封装：SO20和TSSOP20

    • 2. 最大系统工作频率可能因转发器添加的延迟而小于400 kHz。

    购买/参数

    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌

    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌

    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌

    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌

    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌

    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌

    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌

    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌

    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌

    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    ‌

    ‌
    ‌
    ‌
    ‌
    ‌
    ‌
    N true 0 PSPPCA9518Azh 10 封装信息 Package Information t790 1 应用笔记 Application Note t789 2 手册 Brochure t518 3 支持信息 Supporting Information t531 1 数据手册 Data Sheet t520 1 用户指南 User Guide t792 2 zh 0 false zh zh 数据手册 Data Sheet 1 1 3.0 English 1442056414404736586788 PSP 129.7 KB None None documents None 1442056414404736586788 /docs/en/data-sheet/PCA9518A.pdf 129689 /docs/en/data-sheet/PCA9518A.pdf PCA9518A documents N N 2011-06-30 Expandable 5-channel I2C-bus hub /docs/en/data-sheet/PCA9518A.pdf /docs/en/data-sheet/PCA9518A.pdf Data Sheet N 980000996212993340 2022-12-07 pdf N en Dec 3, 2008 980000996212993340 Data Sheet Y N Expandable 5-channel I2C-bus hub 应用笔记 Application Note 2 2 1.0 English 1442087707924736321088 PSP 243.4 KB None None documents None 1442087707924736321088 /docs/en/application-note/AN10419.pdf 243410 /docs/en/application-note/AN10419.pdf AN10419 documents N N 2011-07-04 AN10419: Single Card I2C Bus Buffers Data Sheet /docs/en/application-note/AN10419.pdf /docs/en/application-note/AN10419.pdf Application Note N 645036621402383989 2024-03-13 pdf N en Nov 16, 2010 645036621402383989 Application Note Y N AN10419: Single Card I2C Bus Buffers Data Sheet 3 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 2 4 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 5 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 手册 Brochure 3 6 1.0 English 1442124651939706110399 PSP 791.6 KB None None documents None 1442124651939706110399 /docs/en/brochure/75016530.pdf 791585 /docs/en/brochure/75016530.pdf 75016530 documents N N 2011-09-12 I2C/SMBus buffers for backplane multi-point and hot-swap applications; NXP Level-shifting and hot-swappable I2C/SMBus buffers PCA951xA /docs/en/brochure/75016530.pdf /docs/en/brochure/75016530.pdf Brochure N 712453003803778552 2024-03-12 pdf N en Jul 1, 2008 712453003803778552 Brochure Y N I2C/SMBus buffers for backplane multi-point and hot-swap applications; NXP Level-shifting and hot-swappable I2C/SMBus buffers PCA951xA 7 1.0 English Extend the I<sup>2</sup>C-bus with advanced repeaters and hubs 1442049295936721019607 PSP 757.6 KB None None documents None 1442049295936721019607 /docs/en/brochure/75016532.pdf 757642 /docs/en/brochure/75016532.pdf 75016532 documents N N 2013-04-18 Extend the I<sup>2</sup>C-Bus with Advanced Repeaters and Hubs; NXP 2-Channel I<sup>2</sup>C-Bus Repeaters PCA9515x and 5-Channel I<sup>2</sup>C-Bus Hubs PCA9516x /docs/en/brochure/75016532.pdf /docs/en/brochure/75016532.pdf Brochure N 712453003803778552 2024-06-18 pdf N en Jun 30, 2008 712453003803778552 Brochure Y N Extend the I<sup>2</sup>C-Bus with Advanced Repeaters and Hubs; NXP 2-Channel I<sup>2</sup>C-Bus Repeaters PCA9515x and 5-Channel I<sup>2</sup>C-Bus Hubs PCA9516x 8 1.0 English 1442048526015709770150 PSP 237.8 KB None None documents None 1442048526015709770150 /docs/en/brochure/75016083.pdf 237815 /docs/en/brochure/75016083.pdf 75016083 documents N N 2011-09-12 Accommodate more I2C-bus devices on a single bus; NXP expandable 5-channel I2C-bus hub PCA9518A /docs/en/brochure/75016083.pdf /docs/en/brochure/75016083.pdf Brochure N 712453003803778552 2022-12-07 pdf N en Jul 31, 2007 712453003803778552 Brochure Y N Accommodate more I2C-bus devices on a single bus; NXP expandable 5-channel I2C-bus hub PCA9518A 封装信息 Package Information 1 9 1.0 English 1455078603712720580365 PSP 310.8 KB None None documents None 1455078603712720580365 /docs/en/package-information/SOT360-1.pdf 310839 /docs/en/package-information/SOT360-1.pdf SOT360-1 documents N N 2016-02-12 plastic thin shrink small outline package; 20 leads; body width 4.4 mm /docs/en/package-information/SOT360-1.pdf /docs/en/package-information/SOT360-1.pdf Package Information N 302435339416912908 2024-10-21 pdf N en Feb 8, 2016 302435339416912908 Package Information Y N plastic thin shrink small outline package; 20 leads; body width 4.4 mm 支持信息 Supporting Information 1 10 1.0 English SSOP, TSSOP & VSO FOOTPRINT (WAVE SOLDERING) 1442126381432716559822 PSP 16.6 KB None None documents None 1442126381432716559822 /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf 16645 /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf SSOP-TSSOP-VSO-WAVE documents N N 2016-10-08 Footprint for wave soldering /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf Supporting Information N 371282830530968666 2024-10-21 pdf N en Oct 8, 2009 371282830530968666 Supporting Information Y N Footprint for wave soldering false 0 PCA9518A downloads zh-Hans true 1 Y PSP Y Y 封装信息 1 /docs/en/package-information/SOT360-1.pdf 2016-02-12 1455078603712720580365 PSP 9 Feb 8, 2016 Package Information None /docs/en/package-information/SOT360-1.pdf English documents 310839 None 302435339416912908 2024-10-21 N /docs/en/package-information/SOT360-1.pdf plastic thin shrink small outline package; 20 leads; body width 4.4 mm /docs/en/package-information/SOT360-1.pdf documents 302435339416912908 Package Information N en None Y pdf 1.0 N N plastic thin shrink small outline package; 20 leads; body width 4.4 mm 310.8 KB SOT360-1 N 1455078603712720580365 应用笔记 2 /docs/en/application-note/AN10419.pdf 2011-07-04 1442087707924736321088 PSP 2 Nov 16, 2010 Application Note None /docs/en/application-note/AN10419.pdf English documents 243410 None 645036621402383989 2024-03-13 N /docs/en/application-note/AN10419.pdf AN10419: Single Card I2C Bus Buffers Data Sheet /docs/en/application-note/AN10419.pdf documents 645036621402383989 Application Note N en None Y pdf 1.0 N N AN10419: Single Card I2C Bus Buffers Data Sheet 243.4 KB AN10419 N 1442087707924736321088 /docs/en/application-note/AN255.pdf 2011-07-04 1442088722678694971185 PSP 3 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 手册 3 /docs/en/brochure/75016530.pdf 2011-09-12 1442124651939706110399 PSP 6 Jul 1, 2008 Brochure None /docs/en/brochure/75016530.pdf English documents 791585 None 712453003803778552 2024-03-12 N /docs/en/brochure/75016530.pdf I2C/SMBus buffers for backplane multi-point and hot-swap applications; NXP Level-shifting and hot-swappable I2C/SMBus buffers PCA951xA /docs/en/brochure/75016530.pdf documents 712453003803778552 Brochure N en None Y pdf 1.0 N N I2C/SMBus buffers for backplane multi-point and hot-swap applications; NXP Level-shifting and hot-swappable I2C/SMBus buffers PCA951xA 791.6 KB 75016530 N 1442124651939706110399 /docs/en/brochure/75016532.pdf 2013-04-18 1442049295936721019607 PSP 7 Jun 30, 2008 Brochure Extend the I<sup>2</sup>C-bus with advanced repeaters and hubs None /docs/en/brochure/75016532.pdf English documents 757642 None 712453003803778552 2024-06-18 N /docs/en/brochure/75016532.pdf Extend the I<sup>2</sup>C-Bus with Advanced Repeaters and Hubs; NXP 2-Channel I<sup>2</sup>C-Bus Repeaters PCA9515x and 5-Channel I<sup>2</sup>C-Bus Hubs PCA9516x /docs/en/brochure/75016532.pdf documents 712453003803778552 Brochure N en None Y pdf 1.0 N N Extend the I<sup>2</sup>C-Bus with Advanced Repeaters and Hubs; NXP 2-Channel I<sup>2</sup>C-Bus Repeaters PCA9515x and 5-Channel I<sup>2</sup>C-Bus Hubs PCA9516x 757.6 KB 75016532 N 1442049295936721019607 /docs/en/brochure/75016083.pdf 2011-09-12 1442048526015709770150 PSP 8 Jul 31, 2007 Brochure None /docs/en/brochure/75016083.pdf English documents 237815 None 712453003803778552 2022-12-07 N /docs/en/brochure/75016083.pdf Accommodate more I2C-bus devices on a single bus; NXP expandable 5-channel I2C-bus hub PCA9518A /docs/en/brochure/75016083.pdf documents 712453003803778552 Brochure N en None Y pdf 1.0 N N Accommodate more I2C-bus devices on a single bus; NXP expandable 5-channel I2C-bus hub PCA9518A 237.8 KB 75016083 N 1442048526015709770150 支持信息 1 /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf 2016-10-08 1442126381432716559822 PSP 10 Oct 8, 2009 Supporting Information SSOP, TSSOP & VSO FOOTPRINT (WAVE SOLDERING) None /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf English documents 16645 None 371282830530968666 2024-10-21 N /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf Footprint for wave soldering /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf documents 371282830530968666 Supporting Information N en None Y pdf 1.0 N N Footprint for wave soldering 16.6 KB SSOP-TSSOP-VSO-WAVE N 1442126381432716559822 数据手册 1 /docs/en/data-sheet/PCA9518A.pdf 2011-06-30 1442056414404736586788 PSP 1 Dec 3, 2008 Data Sheet None /docs/en/data-sheet/PCA9518A.pdf English documents 129689 None 980000996212993340 2022-12-07 N /docs/en/data-sheet/PCA9518A.pdf Expandable 5-channel I2C-bus hub /docs/en/data-sheet/PCA9518A.pdf documents 980000996212993340 Data Sheet N en None Y pdf 3.0 N N Expandable 5-channel I2C-bus hub 129.7 KB PCA9518A N 1442056414404736586788 用户指南 2 /docs/en/user-guide/UM10204.pdf 2016-07-12 1442125286808710770774 PSP 4 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 /docs/en/user-guide/UM10323.pdf 2011-07-04 1442125652122716204082 PSP 5 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

    文档

    快速参考恩智浦 文档类别.

    筛选条件

    10 文件

    紧凑列表

    封装信息 (1)
    应用笔记 (2)
    手册 (3)
    支持信息 (1)
    数据手册 (1)
    用户指南 (2)

    设计文件

    快速参考恩智浦 设计文件类型.
    筛选条件

    2 设计文件

    支持

    您需要什么帮助?

    • Narrow your search
    搜索