Overview
The FXWA9306L8X, produced by onsemi, is a dual bi-directional I2C-Bus® and SMBus voltage-level translator. This device is designed to facilitate voltage level translation between two different voltage domains, making it ideal for mixed-mode I2C-Bus applications. It operates within a wide voltage range, from 1.0V to 3.6V on the low-voltage side (VCCA) and from 1.8V to 5.5V on the high-voltage side (VCCB), without the need for a direction pin. The FXWA9306L8X supports Standard-Mode, Fast-Mode, and Fast-Mode-Plus I2C-Bus devices, as well as SMBus devices, ensuring compatibility with a variety of system configurations.
Key Specifications
| Parameter | Min. | Typ. | Max. | Units |
|---|---|---|---|---|
| Operating Temperature Range | -40 | +85 | °C | |
| VCCA (Low Voltage A-Side Power Supply) | 1.0 | 3.6 | V | |
| VCCB (High Voltage B-Side Power Supply) | 1.8 | 5.5 | V | |
| Maximum Propagation Delay (Low-to-High) | 0 | 2.00 | ns (CL = 50pF) | |
| Maximum Propagation Delay (High-to-Low) | 0 | 2.75 | ns (CL = 50pF) | |
| On-State Resistance | 2.4 | 20.0 | Ω | |
| Package Type | 8-Lead, MicroPak™, 1.6mm Wide | |||
| Packing Method | 5000 Units on Tape and Reel |
Key Features
- Bi-directional voltage translation without direction pin
- Supports Standard-Mode, Fast-Mode, and Fast-Mode-Plus I2C-Bus devices and SMBus devices
- Less than 1.5ns maximum propagation delay
- Low 3.5Ω on-state connection between input and output ports
- Open-drain I2C-Bus I/O ports (A0, A1, B0, and B1)
- 5V-tolerant I2C-Bus I/O ports for mixed-mode signal operation
- Lock-up-free operation
- Flow-through pinout for simpler PCB trace routing
- Excellent ESD protection for lower voltage devices
Applications
The FXWA9306L8X is suitable for a variety of applications requiring voltage level translation between different voltage domains. These include:
- Mixed-mode I2C-Bus and SMBus systems
- Multi-master I2C-Bus environments
- Systems requiring clock stretching and multi-master support
- Embedded systems, consumer electronics, and industrial control systems where voltage level translation is necessary
Q & A
- What is the operating temperature range of the FXWA9306L8X?
The operating temperature range is from -40°C to +85°C.
- What are the supported voltage ranges for VCCA and VCCB?
VCCA supports 1.0V to 3.6V, and VCCB supports 1.8V to 5.5V.
- Does the FXWA9306L8X require a direction pin for voltage translation?
No, it does not require a direction pin for voltage translation.
- What is the maximum propagation delay of the FXWA9306L8X?
The maximum propagation delay is less than 2.00ns for low-to-high and 2.75ns for high-to-low transitions with a 50pF load capacitance.
- What type of package does the FXWA9306L8X come in?
The device is packaged in an 8-Lead, MicroPak™, 1.6mm Wide package.
- How many units are typically packed on a reel?
5000 units are typically packed on a reel.
- Does the FXWA9306L8X support multi-master I2C-Bus environments?
- What is the on-state resistance of the FXWA9306L8X?
The on-state resistance ranges from 2.4Ω to 20.0Ω depending on the conditions.
- Does the FXWA9306L8X provide ESD protection?
- How should the OE pin be connected for best translator operation?
The OE pin should be connected to VCCB and pulled up through a high resistor, ensuring the OE logic levels are at least 1V higher than VCCA.
