PCA9515A: I²C总线转发器

PCA9515A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,从而可使用两条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PCA9515A能使系统设计师将总线隔离成两半,因此能有更多的器件或更长的长度。它还可用于运行两条总线,一条为5 V而另一条为3.3 V或400 kHz和100 kHz总线,当另一条总线需要400 kHz操作时会隔离100 kHz总线。

无法串联 两个或多个PCA9515A 。PCA9515A的设计不允许此配置。由于没有方向引脚,所以使用稍有不同的“合法”低电压以避免输入和输出之间的锁定状况。PCA9515A的输入上应用的“常规低电平”会以稍高的值作为“缓冲低电平”传输。当此“缓冲低电平”应用至串联的另一PCA9515A、PCA9516A或PCA9518/A时,第二个PCA9515A、PCA9516A或PCA9518/A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/A、PCA9511/A、PCA9512/A、PCA9513/A、PCA9514/A无法与PCA9515A、PCA9516A或PCA9518/A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。

每个内部缓冲器的输出下拉设为大约0.5 V,而每个内部缓冲器的输入阈值设为比输出为内部驱动LOW时的低大约0.07 V。这能防止发生锁定状况。

PCA9515A: 产品结构框图
Outline 3d SOT505-1
数据手册 (1)
名称/描述Modified Date
I2C-bus repeater (REV 5.0) PDF (217.0 kB) PCA9515A [English]23 Mar 2012
应用说明 (4)
名称/描述Modified Date
Single card I2C bus buffers (REV 1.0) PDF (238.0 kB) AN10419 [English]16 Nov 2010
Level shifting techniques in I2C-bus design (REV 1.0) PDF (52.0 kB) AN10441 [English]20 Jun 2007
PCA954X FAMILY OF I²C / SMBus MULTIPLEXERS and SWITCHES (REV 2.0) PDF (807.0 kB) AN262 [English]01 Oct 2004
I2C / SMBus Repeaters, Hubs and Expanders (REV 2.0) PDF (1.0 MB) AN255 [English]19 Dec 2002
用户指南 (4)
名称/描述Modified Date
I2C-bus specification and user manual (REV 6.0) PDF (1.4 MB) UM10204 [English]28 Apr 2014
I2C-bus specification and user manual (REV 5.0) PDF (1.6 MB) UM10204_JA [English]03 Apr 2013
PCA9600 demonstration board OM6293 (REV 1.0) PDF (130.0 kB) UM10323 [English]15 Dec 2008
I2C Demonstration Board 2005-1 Quick Start Guide (REV 1.0) PDF (261.0 kB) UM10206 [English]13 Jun 2006
手册 (4)
名称/描述Modified Date
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns (REV 1.0) PDF (3.5 MB) 75017540 [English]01 Aug 2014
I2C/SMBus buffers for backplane multi-point and hot-swap applications; NXP® Level-shifting and... (REV 1.0) PDF (773.0 kB) 75016530 [English]01 Jul 2008
Evaluate the I2C-bus with a comprehensive kit; NXP® I2C 2002-1A evaluation board kits OM6285 and OM6278 (REV 1.0) PDF (1.8 MB) 75016531 [English]01 Jul 2008
Extend the I2C-bus with advanced repeaters and hubs; NXP® 2-channel I2C-bus repeaters PCA9515x and... (REV 1.0) PDF (740.0 kB) 75016532 [English]01 Jul 2008
封装信息 (2)
名称/描述Modified Date
plastic thin shrink small outline package; 8 leads; body width 3 mm (REV 1.0) PDF (240.0 kB) SOT505-1 [English]08 Feb 2016
plastic small outline package; 8 leads; body width 3.9 mm (REV 1.0) PDF (244.0 kB) SOT96-1 [English]08 Feb 2016
包装 (2)
名称/描述Modified Date
SO8; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... (REV 2.0) PDF (232.0 kB) SOT96-1_118 [English]19 Apr 2013
TSSOP8; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (214.0 kB) SOT505-1_118 [English]15 Apr 2013
支持信息 (4)
名称/描述Modified Date
Reflow Soldering Profile (REV 1.0) PDF (34.0 kB) REFLOW_SOLDERING_PROFILE [English]30 Sep 2013
Wave Soldering Profile (REV 1.0) PDF (20.0 kB) WAVE_SOLDERING_PROFILE [English]30 Sep 2013
Footprint for reflow soldering (REV 1.0) PDF (9.0 kB) SO-SOJ-REFLOW [English]08 Oct 2009
Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE [English]08 Oct 2009
IBIS
订购信息
型号状态
PCA9515ADActive
PCA9515ADPActive
封装环保信息
产品编号封装说明Outline Version回流/波峰焊接包装产品状态部件编号订购码 (12NC)Marking化学成分RoHS / 无铅 / RHF无铅转换日期EFRIFR(FIT)MTBF(小时)MSLMSL LF
PCA9515ADSOT96-1SO-SOJ-REFLOW SO-SOJ-WAVE
SO-SOJ-REFLOW SO-SOJ-WAVE
Reel 13" Q1/T1ActivePCA9515AD,118 (9352 767 66118)PA9515APCA9515ADweek 5, 20050.02.05E811
Bulk PackActivePCA9515AD,112 (9352 767 66112)PA9515APCA9515ADweek 5, 20050.02.05E811
PCA9515ADPSOT505-1Reflow_Soldering_ProfileReel 13" Q1/T1ActivePCA9515ADP,118 (9352 759 98118)9515APCA9515ADPweek 12, 20050.02.05E811
PCA9515ADP/DGSOT505-1Reflow_Soldering_ProfileReel 13" Q1/T1WithdrawnPCA9515ADP/DG,118 (9352 858 93118)9515AAlways Pb-free0.02.05E811
I2C-bus repeater pca9515adp
Single card I2C bus buffers pca9518apw
Level shifting techniques in I2C-bus design pca9685pw
PCA954X FAMILY OF I²C / SMBus MULTIPLEXERS and SWITCHES pca9516apw
I2C / SMBus Repeaters, Hubs and Expanders pca9600
I2C-bus specification and user manual pca9685pw
I2C-bus specification and user manual pca9685pw
PCA9600 demonstration board OM6293 pca9600
I2C Demonstration Board 2005-1 Quick Start Guide pca9685pw
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns pca9685pw
I2C/SMBus buffers for backplane multi-point and hot-swap applications; NXP® Level-shifting and... pca9518apw
Evaluate the I2C-bus with a comprehensive kit; NXP® I2C 2002-1A evaluation board kits OM6285 and OM6278 lm75a
Extend the I2C-bus with advanced repeaters and hubs; NXP® 2-channel I2C-bus repeaters PCA9515x and... pca9600
Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
PCA9515 IBIS model PCA9515ADP
PCA9515 IBIS model PCA9515AD
plastic small outline package; 8 leads; body width 3.9 mm CBT3306_Q100
Footprint for reflow soldering NPIC6C596A_Q100
Footprint for wave soldering NPIC6C596A_Q100
SO8; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... CBT3306_Q100
plastic thin shrink small outline package; 8 leads; body width 3 mm pesd5v0l7bas
Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
TSSOP8; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... pesd5v0l7bas
PCA9515ADP
SA612A
PCT2075