PCA9515: I2C总线转发器

PCA9515是一款BiCMOS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(SDAn)和时钟(SCLn)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PCA9515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PCA9515。PCA9515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。PCA9515的输入上施加的“常规低电平”会以稍高的“缓冲低电平”值进行传输。当此“缓冲低电平”应用至串联的另一PCA9515、PCA9516A或PCA9518A时,第二个PCA9515、PCA9516A或PCA9518A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。PCA9510A/9511A/9513A/9514A和PCA9512A无法与PCA9515、PCA9516A或PCA9518A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。

当VCC= 0 V时,PCA9515的SCLn/SDAn Ci约为200 pF,相比正常值 < 10 pF。在能保证转发器电源但任一组SCLn/SDAn引脚仍保持在有效总线上的应用中,应使用更新的PCA9515A以防总线负载增加。另外,PCA9515A具有2.3 V至3.6 V的更大电压范围且可用于更低电压电源限制的应用中。

1. 最大系统工作频率可能因转发器添加的延迟而小于400 kHz。

PCA9515: 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 9.0) PDF (95.0 kB) PCA9515 [English]23 Apr 2009
应用说明 (5)
名称/描述Modified Date
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 manual (REV 1.0) PDF (4.2 MB) AN10216 [English]27 Mar 2003
I2C 2002-1A Evaluation Board (REV 2.0) PDF (2.2 MB) AN10146 [English]26 Feb 2003
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 (3)
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
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
报告或演示文稿 (1)
名称/描述Modified Date
design_con_2003_tecforum_i2c_b_1 (REV 0.1) PDF (4.2 MB) DESIGN_CON_2003_TECFORUM_I2C_B_1 [English]27 Jan 2003
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
PCA9515DActive
PCA9515DPActive
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
PCA9515DPSOT505-1Reflow_Soldering_ProfileReel 13" Q1/T1ActivePCA9515DP,118 (9352 686 35118)9515PCA9515DPweek 12, 20050.03.03.33E811
PCA9515DSOT96-1SO-SOJ-REFLOW SO-SOJ-WAVE
SO-SOJ-REFLOW SO-SOJ-WAVE
Reel 13" Q1/T1ActivePCA9515D,118 (9352 686 51118)PCA9515PCA9515Dweek 5, 20050.03.03.33E811
Bulk PackActivePCA9515D,112 (9352 686 51112)PCA9515PCA9515Dweek 5, 20050.03.03.33E811
I2C-bus repeater pca9515
Level shifting techniques in I2C-bus design pca9685pw
PCA954X FAMILY OF I²C / SMBus MULTIPLEXERS and SWITCHES pca9516apw
I2C manual se98apw
I2C 2002-1A Evaluation Board lm75a
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
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
design_con_2003_tecforum_i2c_b_1 lm75a
Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
PCA9515 IBIS model PCA9515DP
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
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
PCA9515
PCT2075
SA612A