PCA9306-Q1_16 Datasheet, PDF (1/23 Pages) Texas Instruments – 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 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 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 V_REF1 and 1.8-V to 5.5-V V_REF2.
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 (r_on) 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.