PCA9507: 适用于HDMI DDC I2C总线和SMBus的2线串行总线扩展器

PCA9507是一款2线串行总线扩展器,提供3.3 V至5 V电平切换,允许最长18米的总线扩展以实现可靠的DDC、I²C总线或SMBus应用。在电平切换过程中保留I²C总线系统所有工作模式和功能的同时,它还允许通过同时为数据(SDA)和时钟(SCL)线路提供双向缓冲来扩展I²C总线,以及扩展端口A上的上升时间加速器以使总线驱动端口A上最大1400 pF的负载或18 m长的距离,以及端口B上400 pF的负载。使用PCA9507能使系统设计师隔离总线电容以满足HDMI DDC 1.3版距离规范。SDA和SCL引脚为耐过压且在PCA9507未通电时为高阻抗。

端口B驱动器带有静态电平偏移,其性能类似PCA9515器件上的驱动器,而端口A驱动器集成上升时间加速器,能灌更多电流并消除静态偏移电压。这使端口B上的低电平变换为端口A上的几乎0 V的低电平。端口B I/O驱动器的静态电平偏移设计防止其连接至具有上升时间加速器的另一器件,包括PCA9510、PCA9511、PCA9512、PCA9513、PCA9514、PCA9515、PCA9516A、PCA9517(B侧)或PCA9518。但是,端口A侧可一并连接两个或多个PCA9507,这样就构成一个端口A位于共用总线上的星形拓扑,因而端口A可直接连接至带有静态或动态偏移电压的任何其他缓冲器。可按端口A至端口B串联多个PCA9507,不会积聚偏移电压,只需考虑渡越时间延迟。当输入阈值大于0.3VCC(A)时,打开端口A上的上升时间加速器。

除非VCC(A)高于0.7 V且VCC(B)高于2.7 V,否则不会启用PCA9507驱动器。也可使用EN引脚在系统控制下打开和关闭驱动器。应该注意,当总线闲置时仅改变使能引脚的状态。端口B内部缓冲器的输出下拉低电平设为大约0.5 V,而内部缓冲器的输入阈值设为大约70 mV以下(0.43 V)。当端口B I/O内部驱动为低电平时,输入端不会将低电平识别为低电平。这能防止发生锁定状况。

PCA9507: 产品结构框图
Outline 3d SOT505-1
数据手册 (1)
名称/描述Modified Date
2-wire serial bus extender for HDMI DDC I2C-bus and SMBus (REV 1.0) PDF (129.0 kB) PCA9507 [English]07 Feb 2008
应用说明 (3)
名称/描述Modified Date
PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus (REV 1.0) PDF (90.0 kB) AN256 [English]23 Mar 2009
Level shifting techniques in I2C-bus design (REV 1.0) PDF (52.0 kB) AN10441 [English]20 Jun 2007
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 (1)
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
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Package versionOperating Temperature (Cel)I2C-bus (kHz)Operating voltage (VDC)Operating voltage 2 (V)InputsOutputs
PCA9507DPActiveSOT505-1-40~854002.7~5.52.7~5.511
PCA9507DActiveSOT96-1-40~854002.7~5.52.7~5.511
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
PCA9507DPSOT505-1Reflow_Soldering_ProfileReel 13" Q1/T1ActivePCA9507DP,118 (9352 858 24118)9507PCA9507DPAlways Pb-free0.02.05E811
PCA9507DSOT96-1SO-SOJ-REFLOW SO-SOJ-WAVE
SO-SOJ-REFLOW SO-SOJ-WAVE
Reel 13" Q1/T1ActivePCA9507D,118 (9352 858 23118)PCA9507PCA9507DAlways Pb-free0.02.05E811
Bulk PackActivePCA9507D,112 (9352 858 23112)PCA9507PCA9507DAlways Pb-free0.02.05E811
2-wire serial bus extender for HDMI DDC I2C-bus and SMBus pca9507dp
PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus PCA9553
Level shifting techniques in I2C-bus design pca9685pw
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
Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
PCA9507 IBIS model PCA9507DP
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
PCA9507DP
PCT2075
SA612A