Overview
The PCA9541APW/01,118 is a 2-to-1 I²C-bus master selector designed by NXP USA Inc. for high reliability dual master I²C-bus applications. This component is particularly useful in systems where multiple masters need to share the same I²C-bus, ensuring seamless and reliable communication. The device features an active LOW reset input, interrupt logic, and the ability to perform voltage level translation between different bus voltages.
Key Specifications
| Parameter | Value |
|---|---|
| Interface Type | I²C |
| Supply Voltage - Max | 5.5 V |
| Supply Voltage - Min | 2.3 V |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | 85°C |
| Package Type | TSSOP16 |
| Address Pins | 4 (allowing up to 16 devices on the I²C-bus) |
| Reset Input | Active LOW |
| Interrupt Inputs/Outputs | Active LOW interrupt input, 2 active LOW interrupt outputs |
Key Features
- 2-to-1 bidirectional master selector
- I²C-bus interface logic; compatible with SMBus standards
- Channel selection via I²C-bus
- Bus initialization/recovery function
- Bus traffic sensor
- Low Ron switches
- Voltage level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V buses
- No glitch on power-up
- Active LOW reset input and interrupt inputs/outputs
Applications
The PCA9541APW/01,118 is suitable for various applications requiring reliable and flexible I²C-bus management, such as:
- Dual master I²C-bus systems
- Industrial automation
- Automotive systems
- Consumer electronics
- Medical devices
Q & A
- What is the primary function of the PCA9541APW/01,118?
The primary function is to act as a 2-to-1 I²C-bus master selector, allowing multiple masters to share the same I²C-bus. - What is the supply voltage range for this component?
The supply voltage range is from 2.3 V to 5.5 V. - What types of packages are available for the PCA9541APW/01,118?
The component is available in TSSOP16 packages. - How many devices can be connected to the I²C-bus using this component?
Up to 16 devices can be connected using the 4 address pins. - Does the PCA9541APW/01,118 support voltage level translation?
Yes, it supports voltage level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V buses. - What is the purpose of the active LOW reset input?
The active LOW reset input allows the device to be initialized and reset to its default state. - How does the device handle interrupt inputs and outputs?
The device features an active LOW interrupt input and two active LOW interrupt outputs. - Is the PCA9541APW/01,118 compatible with SMBus standards?
Yes, it is compatible with SMBus standards. - What is the operating temperature range for this component?
The operating temperature range is from -40°C to 85°C. - Does the PCA9541APW/01,118 have a bus initialization/recovery function?
Yes, it includes a bus initialization/recovery function.
