Overview
The PCA8574PW,112 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 functionality. It is particularly useful in applications where the number of I/O ports is limited.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | NXP USA Inc. |
| Part Number | PCA8574PW,112 |
| Package | 16-TSSOP (0.173", 4.40mm Width) |
| Voltage - Supply | 2.3 V ~ 5.5 V |
| Number of I/O | 8 |
| Mounting Type | Surface Mount |
| Interrupt Output | Yes |
| Interface | I²C |
| Output Type | Push-Pull |
| Operating Temperature | -40°C ~ 85°C |
| Clock Frequency | 400 kHz |
| Current - Output Source/Sink | 100µA, 25mA |
Key Features
- Low current consumption of 4.5 μA (typical, static), making it suitable for mobile applications.
- Latched output ports with 25 mA high current sink drive capability for directly driving LEDs.
- Supports I²C-bus and SMBus communication protocols.
- Interrupt output capability for signaling changes in the input port.
- Operating temperature range from -40°C to 85°C.
Applications
The PCA8574PW,112 is versatile and can be used in various applications, including:
- Mobile devices: Due to its low power consumption, it is ideal for battery-powered devices.
- Industrial control systems: For expanding the I/O capabilities of microcontrollers in industrial settings.
- Automotive systems: Suitable for use in automotive environments due to its wide operating temperature range.
- Consumer electronics: Enhances the I/O functionality in consumer electronic devices such as TVs, set-top boxes, and gaming consoles.
Q & A
- What is the PCA8574PW,112 used for?
The PCA8574PW,112 is used as an 8-bit I²C-bus and SMBus I/O expander to provide additional I/O ports to a microcontroller. - What is the package type of the PCA8574PW,112?
The package type is 16-TSSOP (0.173", 4.40mm Width). - What is the voltage supply range for the PCA8574PW,112?
The voltage supply range is 2.3 V ~ 5.5 V. - Does the PCA8574PW,112 support interrupt output?
Yes, it supports interrupt output. - What is the clock frequency of the PCA8574PW,112?
The clock frequency is 400 kHz. - What is the current sink capability of the PCA8574PW,112?
The current sink capability is up to 25 mA. - What are the typical applications of the PCA8574PW,112?
It is used in mobile devices, industrial control systems, automotive systems, and consumer electronics. - Is the PCA8574PW,112 suitable for high-temperature environments?
Yes, it operates in a temperature range from -40°C to 85°C. - What communication protocols does the PCA8574PW,112 support?
It supports I²C-bus and SMBus communication protocols. - Is the PCA8574PW,112 still in production?
No, the PCA8574PW,112 is obsolete and no longer manufactured.
