PCA9512AD: 电平切换可热插拔的I2C总线和SMBus总线缓冲器

PCA9512A/B是一款热交换I²C总线和SMBus缓冲器,允许将I/O卡插入带电背板而不会损坏数据和时钟总线并附带两个专用供电电压引脚以在保持每个电压电平最佳噪音容限的同时提供3.3 V和5 V系统之间的电平切换。任一引脚均可以2.7 V至5.5 V的供电电压供电,不限制哪个供电电压更高。控制电路会防止背板连接到卡上,直至背板上出现停止位或总线闲置且卡上没有总线冲突。当连接建立时,PCA9512A/B提供双向缓冲,保持背板和卡电容隔离。

如果VCC和VCC2同时上升,则可使用PCA9512A或PCA9512B ,但如果VCC和VCC2上升之间的间隔不同,则只应使用PCA9512B。

PCA9512A/B上升时间加速器电路允许使用更弱的DC上拉电流,同时仍满足上升时间要求。PCA9512A/B采用了一个数字输入引脚,能启用和禁用全部四个SDAn和SCLn引脚上的上升时间加速器。

插入过程中,PCA9512A/B的SDAn和SCLn引脚预充电至1 V,以最大程度减少芯片寄生电容充电所需的电流。

PCA9510A/11A/12A/12B/13A/14A I/O驱动器的递增偏移设计允许其串联或并联另一PCA9510A/11A/12A/12B/13A/14A器件以及静态偏移总线缓冲器的I²C兼容侧,但无法连接至那些总线缓冲器的静态偏移侧。

PCA9512AD: 产品结构框图
PCA9512AD: 应用结构框图
sot096-1_3d
数据手册 (1)
名称/描述Modified Date
Level shifting hot swappable I2C-bus and SMBus bus buffer (REV 6.0) PDF (315.0 kB) PCA9512A_PCA9512B [English]01 Mar 2013
应用说明 (2)
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
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
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
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 (1)
名称/描述Modified Date
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 (1)
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
支持信息 (3)
名称/描述Modified Date
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
订购信息
型号状态Package version应用Reset input pin功能Operating Temperature (Cel)Number of bitsI2C-bus (kHz)Operating voltage (VDC)Operating voltage 2 (V)InputsOutputsMax Sink Current per bit (mA)No of AddressesVoltage Translation Range (V)Max Sink Current, per package (mA)Enable
PCA9512ADActiveSOT96-1-40~854002.7~5.52.7~5.511
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
PCA9512ADSOT96-1SO-SOJ-REFLOW SO-SOJ-WAVE
SO-SOJ-REFLOW SO-SOJ-WAVE
Reel 13" Q1/T1ActivePCA9512AD,118 (9352 797 21118)PA9512APCA9512ADAlways Pb-free0.02.05E811
Bulk PackActivePCA9512AD,112 (9352 797 21112)PA9512APCA9512ADAlways Pb-free0.02.05E811
Level shifting hot swappable I2C-bus and SMBus bus buffer pca9512bdp
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
I2C/SMBus buffers for backplane multi-point and hot-swap applications; NXP® Level-shifting and... pca9518apw
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
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
PCA9512A_PCA9512B
SA612A