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PCA9306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator
SCPS113O
october 2004 – september 2023
PCA9306
PRODUCTION DATA
CONTENTS
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PCA9306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator
1
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Switching Characteristics AC Performance (Translating Down) (EN = 3.3 V)
6.7
Switching Characteristics AC Performance (Translating Down) (EN = 2.5 V)
6.8
Switching Characteristics AC Performance (Translating Up) (EN = 3.3 V)
6.9
Switching Characteristics AC Performance (Translating Up) (EN = 2.5 V)
6.10
Typical Characteristics
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.1.1
Definition of threshold voltage
8.1.2
Correct Device Set Up
8.1.3
Disconnecting an I2C target from the Main I2C Bus Using the EN Pin
8.1.4
Supporting Remote Board Insertion to Backplane with PCA9306
8.1.5
Switch Configuration
8.1.6
Controller on Side 1 or Side 2 of Device
8.1.7
LDO and PCA9306 Concerns
8.1.8
Current Limiting Resistance on VREF2
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Enable (EN) Pin
8.3.2
Voltage Translation
8.4
Device Functional Modes
9
Application and Implementation
9.1
Application Information
9.1.1
General Applications of I2C
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Bidirectional Voltage Translation
9.2.2.2
Sizing Pullup Resistors
9.2.2.3
PCA9306 Bandwidth
9.2.3
Application Curve
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Receiving Notification of Documentation Updates
12.2
Support Resources
12.3
Trademarks
12.4
Electrostatic Discharge Caution
12.5
Glossary
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DQE|8
MPSS008B
DCU|8
MPDS050E
DCT|8
MPDS049D
YZT|8
MXBG045G
Thermal pad, mechanical data (Package|Pins)
Orderable Information
scps113o_oa
scps113o_pm
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Data Sheet
PCA9306 Dual Bidirectional I
2
C Bus and SMBus Voltage-Level Translator