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Name: PCA9306DCTR
Brand: Texas Instruments
SKU: PCA9306DCTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments PCA9306DCTR

Part No.:: PCA9306DCTR

Manufacturer:: Texas Instruments

Package:: 8-LSSOP, 8-MSOP (0.110, 2.80mm Width)

Datasheet:: PCA9306DCTR.pdf

Description:: IC TRNSLTR BIDIRECTIONAL SM8

In Stock:: 2136

Quantity:: Add To Cart

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PCA9306DCTR Typical application Circuitry

PCA9306DCTR

An SMBus and I2C-bus dual bidirectional voltage-level translator is the PCA9306DCTR. It is used in applications requiring voltage level translation between different logic levels, such as interfacing devices operating at different voltages. This chip is particularly useful in environments where a low-voltage device needs to communicate with a higher-voltage device.

PCA9306DCTR Applications Scenarios:

1. Interfacing Between Different Voltage Domains: The PCA9306DCTR is commonly used to interface devices operating at 1.8V with those operating at 5V. This is particularly prevalent in mixed-voltage systems where both low-voltage and high-voltage components are present.

2. I2C/SMBus Devices Communication: It is ideal for applications involving I2C or SMBus communication between devices with incompatible voltage levels. This is often seen in sensor networks or in communication between microcontrollers and peripherals.

Key Features and Parameters:

1. Bidirectional Voltage Translation: The PCA9306DCTR can translate voltages bidirectionally, making it versatile for different communication protocols.

2. Wide Voltage Range: It supports a wide voltage range, typically from 1.2V to 3.3V on one side and from 1.8V to 5.5V on the other.

3. Low Standby Current: The gadget is appropriate for battery-powered applications because of its low standby current.

4. High-Speed Operation: It supports fast mode I2C-bus (400 kHz) and SMBus operations.

Circuit Connection Example: I2C Level Shifting

Overview: Here, we'll describe how to use PCA9306DCTR for I2C level shifting between a 3.3V microcontroller and a 5V sensor.

1. Connect the power supply:

- Pin 6 (V_REF1) should be connected to the 3.3V power supply.

- Connect V_REF2 (pin 4) to the 5V power supply.

2. Ground Connection:

- Ensure that pin 3 (GND) is connected to system ground.

3. I2C Lines Connection:

- Connect SDA1 and SCL1 (pins 5 and 1 respectively) to the I2C lines of the 3.3V microcontroller.

- Connect SDA2 and SCL2 (pins 8 and 2 respectively) to the I2C lines of the 5V sensor.

4. Pull-up Resistors:

- Connect pull-up resistors to the translator's SDA and SCL lines on each side. These resistors' values are determined by the speed and bus capacitance specifications.

Design Points to Remember:

1. Voltage Compatibility: Verify that V_REF1 and V_REF2's voltage levels are appropriate for the interfaced devices.

2. Pull-up Resistors Value: Choose appropriate pull-up resistor values for stable I2C communication.

3. Bus Capacitance: Consider the total capacitance of the I2C bus, as it affects the speed and integrity of the signal.

4. Power Supply Stability: Ensure stable power supplies to avoid communication errors.

Remember, this design is highly application-specific and may require adjustments based on the specific requirements of your system. The PCA9306DCTR offers flexibility and ease of use for various voltage level translation needs in I2C and SMBus communication systems.

PCA9306DCTR information

PCA9306DCTR Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®,Bulk
Series:
-
ProductStatus:
Active
TranslatorType:
Voltage Level
ChannelType:
Bidirectional
NumberofCircuits:
1
ChannelsperCircuit:
2
Voltage-VCCA:
1.2 V ~ 3.3 V
Voltage-VCCB:
1.8 V ~ 5.5 V
InputSignal:
-
OutputSignal:
-
OutputType:
Open Drain, Push-Pull
DataRate:
-
OperatingTemperature:
-40°C ~ 105°C (TA)
Features:
Auto-Direction Sensing
MountingType:
Surface Mount

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