Overview
The Texas Instruments PCA9306DCTT is a dual bidirectional I²C and SMBus voltage-level translator. This device is designed to facilitate voltage translation between different voltage levels on I²C and SMBus interfaces without the need for a direction pin. It operates with an enable (EN) input, allowing for flexible control over the translation process. The PCA9306DCTT supports a wide range of voltage levels, from 1.2 V to 5.5 V, making it versatile for various applications requiring mixed-mode I²C operations.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Brand | Texas Instruments | |
| Package Type | SSOP | |
| Pin Count | 8 | |
| Dimensions | 2.95 x 2.8 x 1.29 mm | |
| Absolute Propagation Delay Time | 1.4 ns | ns |
| Minimum Operating Supply Voltage | 0 V | V |
| Maximum Operating Supply Voltage | 5 V | V |
| Minimum Operating Temperature | -40 °C | °C |
| Maximum Operating Temperature | +85 °C | °C |
| VREF1 Voltage Range | 1.2 V to 3.3 V | V |
| VREF2 Voltage Range | 1.8 V to 5.5 V | V |
Key Features
- Dual bidirectional I²C and SMBus voltage-level translator
- Operates without the use of a direction pin
- Supports voltage translation between 1.2 V and 5 V
- Enable (EN) input for controlling the translator switch
- Low ON-state resistance (RON) for minimal propagation delay
- Lockup-free operation for isolation when EN is low
- Flow-through pinout for ease of PCB trace routing
- ESD protection exceeds JESD 22 – 2000-V Human-body model and 1000-V Charged-device model
Applications
- Servers and routers (telecom switching equipment)
- Personal computers
- Industrial automation
- I²C, SMBus, PMBus, MDIO, UART, low-speed SDIO, GPIO, and other two-signal interfaces
Q & A
- What is the PCA9306DCTT used for?
The PCA9306DCTT is used as a dual bidirectional I²C and SMBus voltage-level translator, facilitating communication between devices operating at different voltage levels.
- What are the voltage ranges supported by the PCA9306DCTT?
The device supports voltage translation between 1.2 V and 5 V, with VREF1 ranging from 1.2 V to 3.3 V and VREF2 ranging from 1.8 V to 5.5 V.
- How does the enable (EN) input function?
The EN input controls the translator switch; when EN is high, the switch is ON, allowing bidirectional data flow, and when EN is low, the switch is OFF, resulting in a high-impedance state between ports.
- What is the maximum propagation delay of the PCA9306DCTT?
The maximum propagation delay is less than 1.5 ns, accommodating standard-mode and fast-mode I²C operations.
- What are the operating temperature ranges for the PCA9306DCTT?
The device operates from -40 °C to +85 °C.
- Does the PCA9306DCTT support ESD protection?
- Can the PCA9306DCTT be used to isolate buses operating at different frequencies?
- What is the package type of the PCA9306DCTT?
The device is available in an 8-pin SSOP package.
- What are some common applications of the PCA9306DCTT?
- Does the PCA9306DCTT support flow-through pinout?
