SCPS274B
June 2021 – March 2023
TCA39306
PRODUCTION DATA
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
6.7
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 a Responder from the Main Bus Using the EN Pin
8.1.4
Supporting Remote Board Insertion to Backplane with TCA39306
8.1.5
Switch Configuration
8.1.6
Controller on Side 1 or Side 2 of Device
8.1.7
LDO and TCA39306 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
Bandwidth
9.2.3
Application Curve
9.3
Systems Examples: I3C Usage Considerations
9.3.1
I3C Bus Switching
9.3.2
I3C Bus Voltage Translation
9.4
Power Supply Recommendations
9.5
Layout
9.5.1
Layout Guidelines
9.5.2
Layout Example
10
Device and Documentation Support
10.1
Receiving Notification of Documentation Updates
10.2
Support Resources
10.3
Trademarks
10.4
Electrostatic Discharge Caution
10.5
Glossary
11
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DCU|8
MPDS050E
DDF|8
MPDS569B
DTM|8
MPSS118A
Thermal pad, mechanical data (Package|Pins)
Orderable Information
scps274b_oa
scps274b_pm
1
Features
2-Bit bidirectional translator for SDA and SCL lines in mixed-mode I
2
C applications
Standard-mode, fast-mode, and fast-mode plus I
2
C and SMBus compatible
I
3
C compatible (12.5 MHz supported)
Allows voltage-level translation between
0.9-V V
REF1
and 1.8-V, 2.5-V, 3.3-V,
or 5-V V
REF2
1.2-V V
REF1
and 1.8-V, 2.5-V, 3.3-V,
or 5-V V
REF2
1.8-V V
REF1
and 2.5-V, 3.3-V, or 5-V V
REF2
2.5-V V
REF1
and 3.3-V or 5-V V
REF2
3.3-V V
REF1
and 5-V V
REF2
Provides bidirectional voltage translation with no direction Pin
Low ON-state resistance between input and output ports provides less signal distortion
Open-drain I
2
C I/O ports (SCL1, SDA1, SCL2, and SDA2)
5-V Tolerant I
2
C I/O ports to support mixed-mode signal operation
High-impedance SCL1, SDA1, SCL2, and SDA2 pins for EN = Low
Lockup-free operation for isolation when EN = Low
Flow-through pinout for ease of printed-circuit-board trace routing
ESD Protection Exceeds JESD 22
2000-V human-body model (A114-A)
1000-V charged-device model (C101)