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PCA9306-Q1 Datasheet Preview

PCA9306-Q1 Datasheet

SMBus Voltage-Level Translator

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PCA9306-Q1
SCPS178B – JULY 2007 – REVISED APRIL 2016
PCA9306-Q1 Dual Bidirectional I2C Bus and SMBus
Voltage-Level Translator
1 Features
1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 2: –40°C to 105°C
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C4B
• 2-Bit Bidirectional Translator for SDA and SCL
Lines in Mixed-Mode I2C Applications
• Compatible With I2C and SMBus
• Less Than 1.5-ns Maximum Propagation Delay to
Accommodate Standard-Mode and Fast-Mode I2C
Devices and Multiple Masters
• Allows Voltage-Level Translation Between
– 1.2-V VREF1 and 1.8-V, 2.5-V, 3.3-V, or 5-V
VREF2
– 1.8-V VREF1 and 2.5-V, 3.3-V, or 5-V VREF2
– 2.5-V VREF1 and 3.3-V, or 5-V VREF2
– 3.3-V VREF1 and 5-V VREF2
• Provides Bidirectional Voltage Translation With No
Direction Pin
• Low 3.5-Ω ON-State Connection Between Input
and Output Ports Provides Less Signal Distortion
• Open-Drain I2C I/O Ports (SCL1, SDA1, SCL2,
and SDA2)
• 5-V Tolerant I2C I/O Ports to Support Mixed-Mode
Signal Operation
• High-Impedance SCL1, SDA1, SCL2, and SDA2
Pins for EN = Low
• Lock-Up-Free Operation for Isolation When
EN = Low
• Flow-Through Pinout for Ease of Printed-Circuit
Board Trace Routing
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
2 Applications
• I2C, SMBus, PMBus, MDIO, UART, Low-Speed
SDIO, GPIO, and Other Two-Signal Interfaces
• Automotive Head Units
• Automotive Instrument Clusters
• Automotive Driver Assistance Cameras
3 Description
This dual bidirectional I2C and SMBus voltage-level
translator, with an enable (EN) input, is operational
from 1.2-V to 3.3-V VREF1 and 1.8-V to 5.5-V VREF2.
The PCA9306-Q1 allows bidirectional voltage
translations between 1.2 V and 5 V, without the use
of a direction pin. The low ON-state resistance (ron) of
the switch allows connections to be made with
minimal propagation delay. When EN is high, the
translator switch is ON, and the SCL1 and SDA1 I/O
are connected to the SCL2 and SDA2 I/O,
respectively, allowing bidirectional data flow between
ports. When EN is low, the translator switch is off,
and a high-impedance state exists between ports.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
PCA9306-Q1
VSSOP (8)
2.30 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Application Diagram
PCA9306-Q1
Copyright © 2016 Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




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PCA9306-Q1 Datasheet Preview

PCA9306-Q1 Datasheet

SMBus Voltage-Level Translator

No Preview Available !

PCA9306-Q1
SCPS178B – JULY 2007 – REVISED APRIL 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings.............................................................. 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics .......................................... 6
7.6 Switching Characteristics: Translating Down, VIH =
3.3 V........................................................................... 6
7.7 Switching Characteristics: Translating Down, VIH =
2.5 V........................................................................... 6
7.8 Switching Characteristics: Translating Up, VIH = 2.3
V................................................................................. 7
7.9 Switching Characteristics: Translating Up, VIH = 1.5
V................................................................................. 7
7.10 Typical Characteristics ............................................ 7
8 Parameter Measurement Information .................. 8
9 Detailed Description .............................................. 9
9.1 Overview ................................................................... 9
9.2 Functional Block Diagram ......................................... 9
9.3 Feature Description................................................. 10
9.4 Device Functional Modes........................................ 10
10 Application and Implementation........................ 11
10.1 Application Information.......................................... 11
10.2 Typical Application ................................................ 11
11 Power Supply Recommendations ..................... 15
12 Layout................................................................... 15
12.1 Layout Guidelines ................................................. 15
12.2 Layout Example .................................................... 15
13 Device and Documentation Support ................. 16
13.1 Documentation Support ........................................ 16
13.2 Community Resource............................................ 16
13.3 Trademarks ........................................................... 16
13.4 Electrostatic Discharge Caution ............................ 16
13.5 Glossary ................................................................ 16
14 Mechanical, Packaging, and Orderable
Information ........................................................... 16
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (March 2013) to Revision B
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section ................................................................................................. 1
2
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Copyright © 2007–2016, Texas Instruments Incorporated
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Part Number PCA9306-Q1
Description SMBus Voltage-Level Translator
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