Overview
The PCA9306IDCURQ1, produced by Texas Instruments, is a dual bidirectional I2C and SMBus voltage-level translator. This component is designed to facilitate voltage translation between two different voltage domains without the need for a direction pin. It operates with voltage supply ranges of 1.2 V to 3.3 V for VREF1 and 1.8 V to 5.5 V for VREF2, making it versatile for various mixed-mode I2C applications. The device features an enable (EN) input that allows for the isolation of bus segments, which is particularly useful in scenarios where devices with different operating frequencies coexist on the same bus. This functionality helps in managing bus capacitance and ensuring reliable communication across different voltage levels.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage Supply Range (VREF1) | 1.2 V to 3.3 V | V |
| Voltage Supply Range (VREF2) | 1.8 V to 5.5 V | V |
| Operating Frequency | Up to 400 kHz | Hz |
| Package Type | 8-VSSOP | |
| Operating Temperature Range | -40°C to 105°C | °C |
| ESD Protection | 2000-V Human-body model, 1000-V Charged-device model | V |
| On-Resistance (RON) | Up to 10 Ω (typical) | Ω |
Key Features
- Bidirectional Voltage Translation: Enables bidirectional voltage translation between 1.2 V and 5 V without a direction pin.
- Enable Input: Allows for the isolation of bus segments, which is useful in managing bus capacitance and supporting different operating frequencies.
- Flow-through Pinout: Facilitates ease of printed-circuit-board trace routing.
- Lockup-free Operation: Ensures isolation when the enable input is low.
- ESD Protection: Exceeds JESD 22 – 2000-V Human-body model and 1000-V Charged-device model.
- Low On-Resistance: Minimal deviation in voltage or propagation delay across channels.
Applications
- I2C, SMBus, PMBus, MDIO, UART, and Low-speed SDIO: Suitable for various two-signal interfaces.
- Servers and Routers: Used in telecom switching equipment and other network infrastructure.
- Personal Computers: Applicable in PC hardware for voltage translation needs.
- Industrial Automation: Used in industrial control systems and automation equipment.
- Remote Board Insertion to Backplane: Helps in preventing data corruption and unintended pulses during board insertion.
Q & A
- What is the PCA9306IDCURQ1 used for?
The PCA9306IDCURQ1 is a dual bidirectional I2C and SMBus voltage-level translator used to facilitate voltage translation between different voltage domains in mixed-mode I2C applications.
- What are the voltage supply ranges for VREF1 and VREF2?
The voltage supply range for VREF1 is 1.2 V to 3.3 V, and for VREF2, it is 1.8 V to 5.5 V.
- What is the maximum operating frequency of the PCA9306IDCURQ1?
The maximum operating frequency is up to 400 kHz.
- What type of package does the PCA9306IDCURQ1 come in?
The PCA9306IDCURQ1 comes in an 8-VSSOP package.
- What is the operating temperature range of the PCA9306IDCURQ1?
The operating temperature range is -40°C to 105°C.
- Does the PCA9306IDCURQ1 provide ESD protection?
Yes, it provides ESD protection exceeding JESD 22 – 2000-V Human-body model and 1000-V Charged-device model.
- How does the enable input (EN) function in the PCA9306IDCURQ1?
The enable input allows for the isolation of bus segments, which is useful in managing bus capacitance and supporting different operating frequencies.
- What are some common applications of the PCA9306IDCURQ1?
Common applications include I2C, SMBus, PMBus, MDIO, UART, low-speed SDIO, servers, routers, personal computers, and industrial automation.
- How does the PCA9306IDCURQ1 help in remote board insertion to a backplane?
It helps in preventing data corruption and unintended pulses during board insertion by isolating the I2C lines when necessary.
- What is the significance of the flow-through pinout in the PCA9306IDCURQ1?
The flow-through pinout facilitates ease of printed-circuit-board trace routing.
