Overview
The PCA8574APW,118 is an 8-bit I²C-bus and SMBus I/O expander integrated circuit produced by NXP USA Inc. This device is designed to provide additional I/O ports to a microcontroller, enhancing the overall system's capability to interact with external devices. It features a quasi-bidirectional I/O port, allowing for both input and output operations, and is compatible with the I²C-bus and SMBus protocols.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-TSSOP (0.173", 4.40mm Width) |
| Supply Voltage | 2.3 V ~ 5.5 V |
| Operating Temperature | -40°C ~ 85°C |
| Number of I/O | 8 |
| Interface | I²C-bus, SMBus |
| Clock Frequency | 400 kHz |
| Interrupt Output | Yes |
| Output Type | Push-Pull |
| POR Current - Output Source/Sink | 100µA, 25mA |
Key Features
- Quasi-bidirectional I/O ports allowing for both input and output operations.
- 400 kHz I²C-bus interface compatible with SMBus.
- Three hardware address inputs for device addressing.
- Interrupt output for signaling changes in the input port.
- Low standby current.
- Operating voltage range from 2.3 V to 5.5 V.
- Operating temperature range from -40°C to 85°C.
Applications
The PCA8574APW,118 is suitable for various applications requiring additional I/O ports, such as:
- Industrial control systems.
- Consumer electronics.
- Automotive systems.
- Medical devices.
- Any system needing to expand the I/O capability of a microcontroller.
Q & A
- What is the PCA8574APW,118 used for? The PCA8574APW,118 is used to expand the I/O capability of a microcontroller by providing additional quasi-bidirectional I/O ports.
- What is the operating voltage range of the PCA8574APW,118? The operating voltage range is from 2.3 V to 5.5 V.
- What is the clock frequency of the I²C-bus interface? The clock frequency is 400 kHz.
- Does the PCA8574APW,118 have an interrupt output? Yes, it has an interrupt output for signaling changes in the input port.
- What is the package type of the PCA8574APW,118? The package type is 16-TSSOP (0.173", 4.40mm Width).
- What is the operating temperature range of the PCA8574APW,118? The operating temperature range is from -40°C to 85°C.
- How many I/O ports does the PCA8574APW,118 have? It has 8 quasi-bidirectional I/O ports.
- Is the PCA8574APW,118 compatible with SMBus? Yes, it is compatible with both I²C-bus and SMBus protocols.
- What are the typical applications of the PCA8574APW,118? Typical applications include industrial control systems, consumer electronics, automotive systems, and medical devices.
- Does the PCA8574APW,118 have hardware address inputs? Yes, it has three hardware address inputs for device addressing.
