Overview
The PCA9554APW,112 is a 16-pin CMOS device manufactured by NXP USA Inc., designed to provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I²C-bus/SMBus applications. This I/O expander is particularly useful in scenarios where additional I/O pins are required, enhancing the capabilities of microcontrollers in various electronic systems.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | NXP USA Inc. |
| Part Number | PCA9554APW,112 |
| Package / Case | 16-TSSOP (0.173, 4.40mm Width) |
| Mounting Type | Surface Mount |
| Number of I/Os | 8 |
| Operating Temperature | -40°C ~ 85°C |
| Voltage - Supply | 2.3V ~ 5.5V |
| Interface | I2C, SMBus |
| Clock Frequency | 400 kHz |
| Interrupt Output | Yes |
| Output Type | Push-Pull |
| Current - Output Source/Sink | 10mA / 25mA |
| RoHS Status | ROHS3 Compliant |
Key Features
- I²C-bus controlled 8-bit I/O expander with interrupt capabilities.
- Programmable active-low polarity and configurable I²C-bus address.
- Noise filter on the SCL/SDA inputs and outputs.
- Drive strength of 25mA on all I/O pins.
- 5V tolerant I/O pins.
- Internal interrupt flag for efficient interrupt handling.
Applications
The PCA9554APW,112 is commonly used in various applications such as:
- Industrial automation: For expanding I/O capabilities in control systems.
- Automotive electronics: For additional I/O needs in vehicle control systems.
- Consumer electronics: For LED lighting control, keypad scanning, and other I/O expansion needs.
- Communication equipment: For enhancing the I/O capabilities of communication devices.
Q & A
- Q: What is the PCA9554APW,112 used for?
A: The PCA9554APW,112 is used for expanding the number of GPIO pins available on a microcontroller, particularly in I²C-bus/SMBus applications.
- Q: What is the operating temperature range of the PCA9554APW,112?
A: The operating temperature range is -40°C to 85°C.
- Q: What is the clock frequency of the PCA9554APW,112?
A: The clock frequency is up to 400 kHz.
- Q: Does the PCA9554APW,112 have interrupt output capabilities?
A: Yes, it has interrupt output capabilities.
- Q: What is the output type of the PCA9554APW,112?
A: The output type is Push-Pull.
- Q: Is the PCA9554APW,112 RoHS compliant?
A: Yes, it is ROHS3 compliant.
- Q: What is the supply voltage range for the PCA9554APW,112?
A: The supply voltage range is 2.3V to 5.5V.
- Q: Can the PCA9554APW,112 be used in industrial automation?
A: Yes, it is commonly used in industrial automation for expanding I/O capabilities.
- Q: Does the PCA9554APW,112 have noise filtering on the SCL/SDA inputs and outputs?
A: Yes, it has noise filtering on the SCL/SDA inputs and outputs.
- Q: What is the drive strength of the I/O pins on the PCA9554APW,112?
A: The drive strength is up to 25mA on all I/O pins.
