Overview
The PCA9543AD,118 is a 2-channel I²C-bus switch produced by NXP USA Inc. This component is designed to manage multiple I²C-bus channels, making it ideal for systems that require the ability to switch between different I²C devices. The PCA9543AD,118 is controlled by the I²C-bus and features bidirectional translating switches that fan out the SCL/SDA upstream pair to two downstream pairs or channels.
Key Specifications
| Specification | Value |
|---|---|
| Brand | NXP USA Inc. |
| Package | 20-SOIC (0.295, 7.50mm Width) |
| Interface | I²C, SMBus |
| Supply Voltage Range | 2.3 V to 5.5 V |
| Operating Temperature Range | -40°C to 85°C |
| Clock Frequency | 0 Hz to 400 kHz |
| Interrupt Inputs | Two active-low interrupt inputs (INT0, INT1) |
| Interrupt Output | One active-low interrupt output (INT) |
| Reset Input | Active-low reset input |
| ESD Protection | Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 |
| Latch-Up Performance | Exceeds 100 mA per JESD78 |
Key Features
- Bidirectional translating switches controlled by the I²C-bus
- Fans out the SCL/SDA upstream pair to two downstream pairs or channels
- Two active-low interrupt inputs (INT0, INT1) and one active-low interrupt output (INT)
- Active-low reset input for resetting the device
- No glitch on power-up and supports hot insertion
- Low standby current and operating power-supply voltage range of 2.3 V to 5.5 V
- 5 V tolerant inputs and voltage-level translation between 1.8-V, 2.5-V, 3.3-V, and 5-V buses
- ESD protection exceeds 2000 V HBM and latch-up performance exceeds 100 mA
Applications
The PCA9543AD,118 is suitable for various applications where multiple I²C devices need to be managed. This includes:
- Embedded systems requiring multiple I²C interfaces
- Industrial automation systems with multiple sensors and actuators
- Automotive systems needing to switch between different I²C devices
- Consumer electronics with complex I²C bus configurations
- Medical devices requiring reliable and flexible I²C bus management
Q & A
- What is the primary function of the PCA9543AD,118?
The PCA9543AD,118 is a 2-channel I²C-bus switch that allows the SCL/SDA upstream pair to fan out to two downstream pairs or channels.
- What is the operating voltage range of the PCA9543AD,118?
The operating voltage range is from 2.3 V to 5.5 V.
- Does the PCA9543AD,118 support hot insertion?
- What is the maximum clock frequency supported by the PCA9543AD,118?
The maximum clock frequency is 400 kHz.
- How many interrupt inputs and outputs does the PCA9543AD,118 have?
The PCA9543AD,118 has two active-low interrupt inputs (INT0, INT1) and one active-low interrupt output (INT).
- What type of reset input does the PCA9543AD,118 have?
The PCA9543AD,118 has an active-low reset input.
- What is the ESD protection level of the PCA9543AD,118?
The ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101.
- What is the latch-up performance of the PCA9543AD,118?
The latch-up performance exceeds 100 mA per JESD78.
- In what package is the PCA9543AD,118 available?
The PCA9543AD,118 is available in a 20-SOIC package.
- What are some common applications for the PCA9543AD,118?
Common applications include embedded systems, industrial automation, automotive systems, consumer electronics, and medical devices.
