Overview
The PCA9306D,112 is a dual bidirectional I²C-bus and SMBus voltage-level translator produced by NXP USA Inc. This device is designed to facilitate voltage translation between two different voltage domains, making it an essential component in mixed-mode I²C applications. The PCA9306D,112 operates with an enable (EN) input and supports voltage translations between 1.2 V and 5.5 V, enabling seamless communication between devices operating at different voltage levels.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Ambient Temperature | -40 to 85 | °C |
| 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 Voltage (SCL1, SDA1, SCL2, SDA2) | 0 to 5.5 | V |
| Pass Switch Current (IPASS) | 64 | mA |
| Package Type | SO8 | |
| Junction-to-Ambient Thermal Resistance (RθJA) | 254.1 | °C/W |
Key Features
- Bidirectional voltage translation between 1.2 V and 5.5 V without the need for a direction pin.
- Lockup-free operation when EN is low, ensuring isolation between ports.
- Flow-through pinout for ease of PCB trace routing.
- High ESD protection exceeding 2000-V Human-body model and 1000-V Charged-device model.
- Latch-up performance exceeds 100 mA per JESD 78, class II.
- Supports I²C, SMBus, PMBus, MDIO, UART, low-speed SDIO, and GPIO interfaces.
Applications
- Servers and data centers.
- Telecom switching equipment and routers.
- Personal computers and laptops.
- Industrial automation systems.
- Other two-signal interface applications such as I²C, SMBus, and PMBus.
Q & A
- What is the primary function of the PCA9306D,112?
The PCA9306D,112 is a dual bidirectional I²C-bus and SMBus voltage-level translator, enabling voltage translation between different voltage domains. - What is the operating voltage range for VREF1 and VREF2?
VREF1 operates from 1.2 V to 3.3 V, and VREF2 operates from 1.8 V to 5.5 V. - What is the purpose of the EN input?
The EN input controls the translator switch; when EN is high, the switch is ON, and when EN is low, the switch is OFF, isolating the ports. - What are the key applications of the PCA9306D,112?
The device is used in servers, routers, personal computers, industrial automation, and other two-signal interface applications. - What is the package type of the PCA9306D,112?
The PCA9306D,112 is available in an SO8 package. - Does the PCA9306D,112 provide ESD protection?
Yes, it provides high ESD protection exceeding 2000-V Human-body model and 1000-V Charged-device model. - Is the PCA9306D,112 still in production?
No, the PCA9306D,112 is no longer manufactured but has available substitutes. - What is the thermal resistance (RθJA) of the PCA9306D,112?
The junction-to-ambient thermal resistance (RθJA) is approximately 254.1 °C/W. - Can the PCA9306D,112 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 is the maximum pass switch current (IPASS) of the PCA9306D,112?
The maximum pass switch current (IPASS) is 64 mA.
