Overview
The PCA9544APW,118 is a 4-channel I²C-bus multiplexer produced by NXP USA Inc. This component is designed to control and manage multiple I²C-bus channels, enabling communication between different devices on the same bus while allowing for voltage level translation. It is particularly useful in systems where multiple I²C devices need to be connected to a single I²C bus, and it supports hot insertion and various voltage levels.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | PCA9544APW,118 |
| Manufacturer | NXP USA Inc. |
| Description | 4-channel I²C-bus multiplexer with interrupt logic |
| Package / Case | 20-TSSOP (0.173, 4.40mm Width) |
| Mounting Type | Surface Mount |
| Operating Temperature (Min.) | -40°C |
| Operating Temperature (Max.) | 85°C |
| Supply Voltage Range | 2.3V to 5.5V |
| Interface | I²C, SMBus |
| Number of Channels | 4 |
| Interrupt Inputs | 4 active LOW |
| Interrupt Output | 1 active LOW |
| Pin Count | 20 |
| RoHS Status | ROHS3 Compliant |
| ESD Protection | Exceeds 2000 V HBM, 1000 V CDM |
Key Features
- 1-of-4 bidirectional translating multiplexer controlled via the I²C-bus
- Supports voltage level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V buses
- Four active LOW interrupt inputs and one active LOW interrupt output
- Three address pins allowing up to 8 devices on the I²C-bus
- Channel selection via I²C-bus
- Power-up with all multiplexer channels deselected
- Low Ron switches
- No glitch on power-up
- Supports hot insertion
- Low standby current
- 5 V tolerant inputs
- 0 Hz to 400 kHz clock frequency
Applications
The PCA9544APW,118 is suitable for various applications where multiple I²C devices need to be managed on a single bus. This includes:
- Embedded systems requiring multiple I²C devices
- Industrial control systems
- Automotive systems
- Consumer electronics
- Medical devices
Q & A
- What is the PCA9544APW,118 used for?
The PCA9544APW,118 is a 4-channel I²C-bus multiplexer used to control and manage multiple I²C devices on a single bus, allowing for voltage level translation and interrupt handling.
- What is the operating voltage range of the PCA9544APW,118?
The operating voltage range is from 2.3V to 5.5V.
- How many interrupt inputs does the PCA9544APW,118 have?
The PCA9544APW,118 has four active LOW interrupt inputs.
- Is the PCA9544APW,118 RoHS compliant?
- What is the maximum operating temperature of the PCA9544APW,118?
The maximum operating temperature is 85°C.
- Can the PCA9544APW,118 support hot insertion?
- What is the clock frequency range of the PCA9544APW,118?
The clock frequency range is from 0 Hz to 400 kHz.
- How many devices can be connected to the I²C-bus using the PCA9544APW,118?
- Does the PCA9544APW,118 have ESD protection?
- What package types are available for the PCA9544A?
The PCA9544A is available in TSSOP20, SO20, and HVQFN20 packages.
