Overview
The PCA9544ABS,118 is a 4-channel I²C-bus multiplexer with interrupt logic, manufactured by NXP USA Inc. This component is designed to control and manage multiple I²C-bus channels, enabling communication between different devices on the bus. It is particularly useful in systems where multiple I²C devices share the same bus, allowing for selective channel switching and voltage level translation between different bus voltages.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | HVQFN20 |
| Package Quantity | 6000 (Reel) |
| Minimum Order Quantity | 6000 |
| Lead Time | 11 weeks |
| Operating Power Supply Voltage | 2.3 V to 5.5 V |
| Clock Frequency | 0 Hz to 400 kHz |
| 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 |
| Address Pins | 3 (allowing up to 8 devices on the I²C-bus) |
| Interrupt Inputs | 4 active LOW interrupt inputs |
| Interrupt Output | 1 active LOW interrupt output |
| Voltage Level Translation | Between 1.8 V, 2.5 V, 3.3 V, and 5 V buses |
Key Features
- 1-of-4 bidirectional translating multiplexer controlled via the I²C-bus
- I²C-bus interface logic; compatible with SMBus
- Channel selection via I²C-bus
- Power-up with all multiplexer channels deselected
- Low Ron switches
- Allows voltage level translation between different bus voltages
- No glitch on power-up
- Supports hot insertion
- Low standby current
- 5 V tolerant inputs
Applications
The PCA9544ABS,118 is suitable for a variety of applications where multiple I²C devices need to be managed on a single bus. This includes:
- Embedded systems requiring multiple I²C peripherals
- Industrial control systems with multiple sensors and actuators
- Automotive systems with various I²C-based components
- Consumer electronics such as smart home devices and IoT applications
Q & A
- What is the PCA9544ABS,118 used for?
The PCA9544ABS,118 is used as a 4-channel I²C-bus multiplexer with interrupt logic to manage and control multiple I²C devices on a single bus. - What are the package options for the PCA9544A?
The PCA9544A is available in SO20, TSSOP20, and HVQFN20 packages. - What is the operating voltage range of the PCA9544ABS,118?
The operating power supply voltage range is from 2.3 V to 5.5 V. - Can the PCA9544ABS,118 handle different bus voltages?
Yes, it allows voltage level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V buses. - How many interrupt inputs and outputs does the PCA9544ABS,118 have?
It has 4 active LOW interrupt inputs and 1 active LOW interrupt output. - Is the PCA9544ABS,118 compatible with SMBus?
Yes, it is compatible with SMBus. - What is the maximum clock frequency supported by the PCA9544ABS,118?
The maximum clock frequency supported is 400 kHz. - Does the PCA9544ABS,118 support hot insertion?
Yes, it supports hot insertion. - What is the ESD protection level of the PCA9544ABS,118?
The ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101. - How many devices can be connected to the I²C-bus using the PCA9544ABS,118?
Up to 8 devices can be connected on the I²C-bus due to the 3 address pins).
