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TCA9517DSGR PDF预览

TCA9517DSGR

更新时间： 2024-09-24 12:00:31
品牌 Logo 应用领域
德州仪器 - TI 中继器
页数 文件大小 规格书
18页 845K
描述
LEVEL-TRANSLATING I2C BUS REPEATER

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TCA9517DSGR 数据手册

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TCA9517  
www.ti.com  
SCPS242 –DECEMBER 2012  
LEVEL-TRANSLATING I2C BUS REPEATER  
Check for Samples: TCA9517  
1
FEATURES  
•
•
•
Two-Channel Bidirectional Buffer  
Mixed-Mode Signal Operation  
Lockup-Free Operation  
I2C Bus and SMBus Compatible  
•
•
Operating Supply Voltage Range of  
0.9 V to 5.5 V on A Side  
Accommodates Standard Mode and Fast Mode  
I2C Devices and Multiple Masters  
•
•
•
Operating Supply Voltage Range of  
2.7 V to 5.5 V on B Side  
•
•
•
Powered-Off High-Impedance I2C Pins  
400-kHz Fast I2C Bus  
Voltage-Level Translation From 0.9 V to 5.5 V  
and 2.7 V to 5.5 V  
Latch-Up Performance Exceeds 100 mA Per  
JESD 78, Class II  
Footprint and Function Replacement for  
PCA9515A  
•
ESD Protection Exceeds JESD 22  
–
–
–
5500-V Human-Body Model (A114-A)  
200-V Machine Model (A115-A)  
•
•
•
Active-High Repeater-Enable Input  
Open-Drain I2C I/O  
5.5-V Tolerant I2C and Enable Input Support  
1000-V Charged-Device Model (C101)  
DSG PACKAGE  
(TOP VIEW)  
DGK PACKAGE  
(TOP VIEW)  
V
VCCB  
1
8
CCA  
VCCA  
VCCB  
1
2
3
4
8
7
6
5
SCLA  
SDAA  
GND  
2
3
4
7
6
5
SCLB  
SDAB  
EN  
SCLA  
SDAA  
GND  
SCLB  
SDAB  
EN  
DESCRIPTION/ORDERING INFORMATION  
This dual bidirectional I2C buffer is operational at 2.7 V to 5.5 V.  
The TCA9517 is a BiCMOS integrated circuit intended for I2C bus and SMBus systems. It can provide  
bidirectional voltage-level translation (up-translation/down-translation) between low voltages (down to 0.9 V) and  
higher voltages (2.7 V to 5.5 V) in mixed-mode applications. This device enables I2C and similar bus systems to  
be extended, without degradation of performance even during level shifting.  
The TCA9517 buffers both the serial data (SDA) and the serial clock (SCL) signals on the I2C bus, thus allowing  
two buses of 400-pF bus capacitance to be connected in an I2C application. This device can also be used to  
isolate two halves of a bus for voltage and capacitance.  
The TCA9517 has two types of drivers—A-side drivers and B-side drivers. All inputs and I/Os are overvoltage  
tolerant to 5.5 V, even when the device is unpowered (VCCB and/or VCCA = 0 V).  
ORDERING INFORMATION  
TA  
PACKAGES(1) (2)  
Tape and reel  
Tape and reel  
ORDERABLE PART NUMBER  
TOP-SIDE MARKING  
AYK  
MSOP – DGK  
QFN - DSG  
TCA9517DGKR  
–40°C to 85°C  
TCA9517DSGR  
PREVIEW  
(1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.  
(2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI  
website at www.ti.com.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2012, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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