Overview
The PCA9306DC,125 is a dual bidirectional I²C-bus and SMBus voltage-level translator produced by NXP USA Inc. This component is designed to facilitate voltage translation between two different voltage domains, making it suitable for mixed-mode I²C and SMBus applications. The device operates with an enable (EN) input and supports voltage translations between 1.2 V and 5.5 V without the need for a direction pin. It is available in various package types, including VSSOP, which is the case for the PCA9306DC,125 model.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range (VREF1) | 1.2 V to 3.3 V | V |
| Operating Voltage Range (VREF2) | 1.8 V to 5.5 V | V |
| Enable Input (EN) | High: ON, Low: OFF | - |
| Package Type | VSSOP (8 pins) | - |
| Package Size | 2.3 mm x 3.1 mm | mm |
| ESD Protection | 2000-V Human-body model, 1000-V Charged-device model | V |
| Propagation Delay (tPLH, tPHL) | Up to 0.8 ns (depending on load capacitance) | ns |
| ON-State Resistance (RON) | Low ON-state resistance for minimal propagation delay | - |
Key Features
- Bidirectional voltage translation between 1.2 V and 5.5 V without a direction pin.
- Lockup-free operation when EN is low, ensuring isolation between ports.
- Flow-through pinout for ease of printed-circuit-board trace routing.
- High ESD protection: 2000-V Human-body model and 1000-V Charged-device model.
- Low ON-state resistance (RON) for minimal propagation delay.
- Supports I²C, SMBus, PMBus, MDIO, UART, low-speed SDIO, and GPIO interfaces.
Applications
- Servers and routers (telecom switching equipment).
- Personal computers.
- Industrial automation.
- Remote board insertion to backplane applications to prevent data corruption during transactions.
- Any system requiring mixed-mode I²C and SMBus voltage-level translation.
Q & A
- What is the PCA9306DC,125 used for? The PCA9306DC,125 is used for bidirectional voltage translation between different voltage domains in I²C and SMBus applications.
- What are the operating voltage ranges 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.
- How does the enable input (EN) function? When EN is high, the translator switch is ON, and when EN is low, the translator switch is OFF, creating a high-impedance state between ports.
- What package type is the PCA9306DC,125 available in? The PCA9306DC,125 is available in a VSSOP (8-pin) package.
- What is the package size of the PCA9306DC,125? The package size is 2.3 mm x 3.1 mm.
- What level of ESD protection does the PCA9306DC,125 offer? It offers 2000-V Human-body model and 1000-V Charged-device model ESD protection.
- What are some common applications of the PCA9306DC,125? Common applications include servers, routers, personal computers, industrial automation, and remote board insertion to backplane.
- Can the PCA9306DC,125 be used to isolate different bus speeds? Yes, it can be used to isolate a 400-kHz bus from a 100-kHz bus by controlling the EN pin.
- What is the significance of the low ON-state resistance (RON) in the PCA9306DC,125? The low ON-state resistance minimizes propagation delay, ensuring efficient data transfer.
- Is the PCA9306DC,125 still in production? The PCA9306DC,125 is listed as obsolete and no longer manufactured, but substitutes like PCA9306DC1Z are available.
