Overview
The PCA9306DTR2G, produced by onsemi, is a dual bidirectional I2C and SMBus voltage-level translator. This device is designed to facilitate bidirectional voltage translations between different voltage levels, ranging from 1.0 V to 5.5 V, without the need for a direction pin. It features an enable (EN) input that allows for the control of the translator switch, enabling or disabling the connection between the two I2C or SMBus ports. This component is particularly useful in mixed-mode I2C applications where different voltage levels are required.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage (VREF1) | 1.2 to 3.3 | V |
| Reference Voltage (VREF2) | 1.8 to 5.5 | V |
| Enable Input Voltage (EN) | 0 to 5.5 | V |
| Input/Output Pin Voltage (VI/O) | 0 to 5.5 | V |
| Operating Ambient Temperature (TA) | –40 to 85 | °C |
| Maximum Propagation Delay | < 1.5 ns | |
| ESD Protection | > 2000 V (Human Body Model), > 1000 V (Charged Device Model) | |
| Package Types | SSOP-8, VSSOP-8, X2SON-8, DSBGA-8 |
Key Features
- Bidirectional voltage translation between 1.0 V and 5 V without a direction pin.
- Compatible with I2C, SMBus, PMBus, MDIO, UART, low-speed SDIO, and GPIO interfaces.
- Standard-mode, fast-mode, and fast-mode plus I2C-bus and SMBus compatible.
- Low ON-state resistance (RON) for minimal propagation delay.
- Lockup-free operation and flow-through pinout for ease of PCB trace routing.
- Excellent ESD protection exceeding JESD 22 and JESD 78 standards.
- Ability to isolate and disconnect buses of different frequencies using the EN pin.
Applications
- Servers and data centers.
- Telecom switching equipment and routers.
- Personal computers and laptops.
- Industrial automation systems.
- Mixed-mode I2C and SMBus applications requiring voltage level translation.
Q & A
- What is the primary function of the PCA9306DTR2G?
The PCA9306DTR2G is a dual bidirectional I2C and SMBus voltage-level translator, allowing for bidirectional voltage translations between different voltage levels.
- What voltage ranges does the PCA9306DTR2G support?
The device supports reference voltages from 1.2 V to 3.3 V (VREF1) and 1.8 V to 5.5 V (VREF2).
- How does the enable (EN) input function?
The EN input controls the translator switch, enabling or disabling the connection between the two I2C or SMBus ports.
- What are the propagation delay characteristics of the PCA9306DTR2G?
The device has a maximum propagation delay of less than 1.5 ns.
- What types of ESD protection does the PCA9306DTR2G offer?
The device offers ESD protection exceeding 2000 V (Human Body Model) and 1000 V (Charged Device Model).
- In what types of applications is the PCA9306DTR2G commonly used?
It is commonly used in servers, telecom switching equipment, personal computers, industrial automation, and mixed-mode I2C and SMBus applications.
- What package types are available for the PCA9306DTR2G?
The device is available in SSOP-8, VSSOP-8, X2SON-8, and DSBGA-8 packages.
- Can the PCA9306DTR2G isolate buses operating at different frequencies?
- Does the PCA9306DTR2G provide physical capacitance isolation?
No, the PCA9306DTR2G does not provide physical capacitance isolation but only voltage level translation when active and isolation when disabled.
- What is the operating ambient temperature range of the PCA9306DTR2G?
The operating ambient temperature range is from –40°C to 85°C.
