Overview
The PCA9306DCUT, manufactured by Texas Instruments, is a dual bidirectional I2C and SMBus voltage-level translator. This device is designed to facilitate bidirectional voltage translations between two different voltage domains, ranging from 1.2 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 voltage domains. This functionality is particularly useful in mixed-mode I2C applications, ensuring seamless communication across different voltage levels.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage Range (VREF1) | 1.2 to 3.3 | V |
| Voltage Range (VREF2) | 1.8 to 5.5 | V |
| Maximum Frequency | 400 | kHz |
| ON-State Resistance (RON) | Low | Ohms |
| ESD Protection | 2000-V Human-body model, 1000-V Charged-device model | V |
| Package Types | SSOP (8), VSSOP (8), X2SON (8), DSBGA (8) | - |
| Package Size | Varies by package type (e.g., SSOP: 2.95 mm x 4 mm) | mm |
Key Features
- 2-bit bidirectional translator for SDA and SCL lines in mixed-mode I2C applications.
- I2C and SMBus compatible.
- Lockup-free operation when EN is low.
- Flow-through pinout for ease of PCB trace routing.
- High ESD protection (2000-V Human-body model, 1000-V Charged-device model).
- Low ON-state resistance (RON) for minimal propagation delay.
- Enable (EN) input to control the translator switch.
- Isolation capability to disconnect slower buses during fast-mode communication.
Applications
- Servers and data centers.
- Telecom switching equipment and routers.
- Personal computers.
- Industrial automation systems.
- I2C, SMBus, PMBus, MDIO, UART, low-speed SDIO, and GPIO interfaces.
- Remote board insertion to backplane applications.
Q & A
- What is the PCA9306DCUT used for? The PCA9306DCUT is used as a dual bidirectional I2C and SMBus voltage-level translator, enabling communication between different voltage domains.
- What are the voltage ranges supported by the PCA9306DCUT? The device supports voltage ranges from 1.2 V to 3.3 V for VREF1 and from 1.8 V to 5.5 V for VREF2.
- What is the maximum frequency supported by the PCA9306DCUT? The device supports a maximum frequency of 400 kHz.
- Does the PCA9306DCUT have ESD protection? Yes, it has ESD protection exceeding 2000-V Human-body model and 1000-V Charged-device model.
- What are the package types available for the PCA9306DCUT? The device is available in SSOP, VSSOP, X2SON, and DSBGA packages.
- How does the enable (EN) input function on the PCA9306DCUT? The EN input controls the translator switch, allowing or disabling the connection between the two voltage domains.
- Can the PCA9306DCUT be used to isolate different bus speeds? Yes, it can isolate a 400-kHz bus from a 100-kHz bus by controlling the EN pin.
- What are some common applications of the PCA9306DCUT? Common applications include servers, routers, personal computers, industrial automation, and remote board insertion to backplane.
- Does the PCA9306DCUT support lockup-free operation? Yes, it supports lockup-free operation when the EN input is low.
- How does the PCA9306DCUT facilitate PCB design? It features a flow-through pinout for ease of PCB trace routing.
