Overview
The PCA9306EVM is an evaluation module designed by Texas Instruments to facilitate the testing and evaluation of the PCA9306 dual bidirectional I2C-bus and SMBus voltage-level translator. This module allows designers to assess the performance of the PCA9306 in various system configurations, including different pullup resistor values and capacitive loading conditions. The PCA9306 itself is a critical component for voltage level translation between two different voltage nodes, making it essential for I2C and SMBus/PMBus systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range (Vref(1)) | - | 1.0 V | - | 3.6 V | V |
| Input Voltage Range (Vbias(ref)(2)) | - | 1.8 V | - | 5 V | V |
| Propagation Delay (tPLH) | LOW to HIGH | 0 ns | - | 2.0 ns | ns |
| Propagation Delay (tPHL) | HIGH to LOW | 0 ns | - | 2.5 ns | ns |
| On-state Resistance | VI(EN) = 3 V | 2.4 Ω | - | 5.0 Ω | Ω |
| Off-state Input/Output Capacitance | SCLn, SDAn; VO = 3 V or 0 V; VI(EN) = 0 V | - | 4 pF | 6 pF | pF |
| On-state Input/Output Capacitance | SCLn, SDAn; VO = 3 V or 0 V; VI(EN) = 3 V | - | 9.3 pF | 12.5 pF | pF |
| Operating Temperature | - | -40 °C | - | 105 °C | °C |
Key Features
- Dual bidirectional I2C-bus and SMBus voltage-level translation
- Operates with input voltage ranges from 1.0 V to 3.6 V (Vref(1)) and output voltage ranges from 1.8 V to 5 V (Vbias(ref)(2))
- Less than 1.5 ns maximum propagation delay to support Standard-mode and Fast-mode I2C-bus devices
- Low 3.5 Ω ON-state connection between input and output ports for minimal signal distortion
- Open-drain I2C-bus I/O ports (SCL1, SDA1, SCL2, and SDA2)
- Enable (EN) input for controlling the translator
- Supports testing with different pullup resistor values and capacitive loads
- Footprint for a socket to evaluate multiple PCA9306 devices
Applications
The PCA9306EVM and the PCA9306 are designed for use in various I2C and SMBus/PMBus systems that require voltage level translation. Typical applications include:
- Embedded systems where different voltage levels are used for different components
- Industrial control systems requiring communication between devices at different voltage levels
- Consumer electronics such as smartphones, tablets, and other portable devices
- Automotive systems where multiple voltage domains are common
Q & A
- What is the PCA9306EVM used for?
The PCA9306EVM is used to evaluate the performance of the PCA9306 dual bidirectional I2C-bus and SMBus voltage-level translator in various system configurations. - What are the input voltage ranges for the PCA9306?
The PCA9306 operates with input voltage ranges from 1.0 V to 3.6 V (Vref(1)) and output voltage ranges from 1.8 V to 5 V (Vbias(ref)(2)). - What is the maximum propagation delay of the PCA9306?
The maximum propagation delay is less than 1.5 ns, supporting Standard-mode and Fast-mode I2C-bus devices. - What is the on-state resistance of the PCA9306?
The on-state resistance is typically around 3.5 Ω. - Does the PCA9306EVM support testing with different capacitive loads?
Yes, the PCA9306EVM supports testing with different capacitive loads and pullup resistor values. - What is the operating temperature range of the PCA9306?
The operating temperature range is from -40 °C to 105 °C. - Can the PCA9306 be used in automotive systems?
Yes, the PCA9306 can be used in automotive systems where multiple voltage domains are common. - Does the PCA9306 have an enable input?
Yes, the PCA9306 has an enable (EN) input for controlling the translator. - What types of systems typically use the PCA9306?
The PCA9306 is typically used in embedded systems, industrial control systems, consumer electronics, and automotive systems. - Can multiple PCA9306 devices be evaluated using the PCA9306EVM?
Yes, the PCA9306EVM has a footprint for a socket to evaluate multiple PCA9306 devices.
