PCA9306 Level Translators: Datasheet, Applications, Circuit

Product Overview

The PCA9306 is a dual bidirectional  I2C -bus and SMBus voltage-level translator with an enable (EN) input, and is operational from 1.0 V to 3.6 V (Vref(1)) and 1.8 V to 5.5 V (Vbias(ref)(2)).

 

The PCA9306 allows bidirectional voltage translations between 1.0 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.

 

This blog will introduce PCA9306 systematically from its features, pinout to its specifications, applications, also including PCA9306 datasheet and so much more.

PCA9306 Features

• 2-Bit bidirectional translator for SDA and SCL linesin mixed-mode   I2C  Applications
• I2C and SMBus  compatible
• Less than 1.5-ns maximum propagation delay  toaccommodate standard-mode and fast-mode I2Cdevices  and multiple controllers
• 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 nodirection pin
• Low 3.5-Ω ON-state resistance between input andoutput ports  provides less signal distortion
• Open-drain I2C I/O ports  (SCL1, SDA1, SCL2  , andSDA2)
• 5-V Tolerant I2C I/O ports  to support mixed-modesignal operation
• High-impedance SCL1, SDA1, SCL2.  and SDA2pins for EN = low
• Lockup-free operation for isolation when EN = low
• Flow-through pinout for ease of printed-circuitboard trace routing
• Latch-up performance exceeds 100 mA Per JESD78, class II
• ESD protection exceeds JESD 22

– 2000-V Human-body model (A114-A)

– 1000-V Charged-device model (C101)

PCA9306 Pinout

The following figure is the diagram of PCA9306 pinout.

 

PCA9306 Pinout

 

PCA9306 Applications

• I2C, SMBus.  PMBus ,  MDIO ,  UART , low-speed SDIO,  GPIO , and other two-signal interfaces
• Servers
• Routers (telecom switching equipment)
• Personal Computers
• Industrial Automation

 

PCA9306 CAD Models

The following are PCA9306 Symbol, Footprint, and 3D Model.

 

PCA9306 Symbol

 

PCA9306 Footprint

 

PCA9306 3D Model

 

PCA9306 Circuit Diagram

The following are the circuit diagrams of PCA9306.

 

Typical Application Circuit

 

Simplified Application Diagram

 

Switch Configuration

 

Example of no leakage current path when using LDO 

 

PCA9306 Block Diagram

The following figure shows the block diagram of PCA9306.

 

PCA9306 Block Diagram

 

PCA9306 Package

The following diagram shows the PCA9306 package.

 

PCA9306 Package

 

PCA9306 Specification

Product Attribute	Attribute Value
Manufacturer:	Texas Instruments
Product Category:	Translation - Voltage Levels
Supply Voltage - Max:	5 V
Supply Voltage - Min:	0 V
Minimum Operating Temperature:	- 40 C
Maximum Operating Temperature:	+ 85 C
Mounting Style:	SMD/SMT
Package / Case:	TSSOP-8
Series:	PCA9306
Packaging:	Reel
Packaging:	Cut Tape
Packaging:	MouseReel
Product Type:	Translation - Voltage Levels
Factory Pack Quantity:	2500
Subcategory:	Logic ICs
Part # Aliases:	9.35283E+11

 

PCA9306 Manufacturer

Texas Instruments Incorporated (TI) is a global semiconductor design and manufacturing company that develops analog ICs and embedded processors. By employing the world's brightest minds, TI creates innovations that shape the future of technology. TI is helping more than 100,000 customers transform the future, today.

 

PCA9306 Datasheet

You can download PCA9306 datasheet from the link given below:

PCA9306 Datasheet

 

Using Warnings

Note: Please check their parameters and pin configuration before replacing them in your circuit.

 

PCA9306 FAQ

What is the operation of the PCA9306?

1.0 V to 3.6 V.

 

What is the Ron of the PCA9306?

Low ON-state resistance

 

What is bidirectional voltage level translator?

Bidirectional Voltage Translators without Direction Pin: Our bidirectional voltage level translators serve as an interface between different supply and input/output voltage levels. These products come without direction pins.

 

What is voltage shifter?

A voltage level-shifter shifts the level of output voltage from one voltage domain to another voltage domain in a digital circuit. Level Shifter circuits are compared in terms of output voltage level, power consumption and delay.

 

What is level shifter in VLSI?

Level Shifter cell is used to shift a signal voltage range from one voltage domain to another. This is required when the chip is operating at multiple voltage domains. A signal in one voltage domain may have a voltage range which is different to the signal in another voltage domain.