Overview
The PCA9543APW,118, produced by NXP USA Inc., is a 2-channel I²C-bus switch with interrupt logic and reset. This component is designed to facilitate multiplexing in I²C-bus systems, allowing a single upstream I²C-bus to be routed to two downstream I²C-buses. It is particularly useful in applications where multiple devices need to be connected to the same I²C-bus, enabling efficient management and communication between these devices.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 14-pin TSSOP |
| Operating Power Supply Voltage | 2.3 V to 5.5 V |
| Clock Frequency | 0 Hz to 400 kHz |
| Input/Output Voltage Tolerance | 5 V tolerant inputs |
| ESD Protection | Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 |
| Latch-up Testing | Exceeds 100 mA per JEDEC Standard JESD78 |
| Standby Current | Low standby current |
| Interrupt Logic | Supports interrupt inputs (INT0 and INT1) |
Key Features
- Bidirectional translating switch controlled by the I²C-bus.
- Supports hot insertion.
- No glitch on power-up.
- Low standby current.
- 5 V tolerant inputs.
- ESD protection exceeds 2000 V HBM and 1000 V CDM.
- Latch-up testing exceeds 100 mA per JEDEC Standard JESD78.
- Interrupt logic with INT0 and INT1 inputs.
- Can be used as a voltage translator.
Applications
The PCA9543APW,118 is suitable for various applications requiring I²C-bus multiplexing, such as:
- Embedded systems where multiple I²C devices need to be managed.
- Industrial automation systems requiring multiple sensor and actuator connections.
- Automotive systems with multiple I²C devices.
- Consumer electronics with complex I²C-bus configurations.
Q & A
- What is the PCA9543APW,118 used for?
The PCA9543APW,118 is used as a 2-channel I²C-bus switch to manage and multiplex I²C-bus connections in various applications. - What is the operating voltage range of the PCA9543APW,118?
The operating power supply voltage range is from 2.3 V to 5.5 V. - What is the maximum clock frequency supported by the PCA9543APW,118?
The maximum clock frequency supported is 400 kHz. - Does the PCA9543APW,118 support hot insertion?
Yes, it supports hot insertion. - What kind of ESD protection does the PCA9543APW,118 offer?
The PCA9543APW,118 offers ESD protection that exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101. - Can the PCA9543APW,118 be used as a voltage translator?
Yes, it can be used as a voltage translator to manage different voltage levels on the I²C-bus. - What is the purpose of the interrupt logic in the PCA9543APW,118?
The interrupt logic allows the device to signal interrupts from devices connected to either of the two downstream channels, facilitating efficient interrupt handling. - What package type is the PCA9543APW,118 available in?
The PCA9543APW,118 is available in a 14-pin TSSOP package. - Does the PCA9543APW,118 have any specific requirements for unused interrupt inputs?
Yes, if the interrupt function is not required, the interrupt inputs must be connected to VDD through a pull-up resistor. - Can multiple devices generate interrupts simultaneously on the PCA9543APW,118?
Yes, more than one device can generate interrupts on a channel at the same time.
