Overview
The PCA9535CPW,112 is a 24-pin CMOS device produced by NXP USA Inc., designed to provide 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I²C-bus/SMBus applications. This device is part of the PCA9535 and PCA9535C series, which offer enhanced features such as higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O configuration, and smaller packaging. It is particularly useful in scenarios where additional I/O is needed for various components like ACPI power switches, sensors, push buttons, LEDs, and fans.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | TSSOP24 |
| Number of I/O | 16 bits |
| Interface | I²C-bus/SMBus |
| Operating Voltage | 2.3 V to 5.5 V |
| Temperature Range | -40 °C to +85 °C |
| Clock Frequency | 0 Hz to 400 kHz |
| I/O Configuration | Individual configuration as input or output |
| Polarity Inversion | Active HIGH or active LOW operation |
| Interrupt Output | Active LOW interrupt output |
| ESD Protection | Exceeds 2000 V HBM, 200 V MM, and 1000 V CDM |
Key Features
- Operating power supply voltage range of 2.3 V to 5.5 V
- 5 V tolerant I/Os
- Polarity Inversion register for active HIGH or active LOW operation
- Active LOW interrupt output
- Low standby current
- No glitch on power-up
- Internal power-on reset
- 16 I/O pins which default to 16 inputs
- Noise filter on SCL/SDA inputs
Applications
The PCA9535CPW,112 is versatile and can be used in various applications where additional I/O is required. Some common uses include:
- ACPI power switches
- Sensors
- Push buttons
- LEDs
- Fans
- Other general-purpose I/O expansion needs in embedded systems
Q & A
- What is the PCA9535CPW,112 used for?
The PCA9535CPW,112 is used for providing 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I²C-bus/SMBus applications. - What is the operating voltage range of the PCA9535CPW,112?
The operating voltage range is from 2.3 V to 5.5 V. - What is the temperature range of the PCA9535CPW,112?
The temperature range is from -40 °C to +85 °C. - What is the clock frequency range of the PCA9535CPW,112?
The clock frequency range is from 0 Hz to 400 kHz. - Does the PCA9535CPW,112 have ESD protection?
Yes, it exceeds 2000 V HBM, 200 V MM, and 1000 V CDM. - How many I/O pins does the PCA9535CPW,112 have?
The device has 16 I/O pins. - Can the I/O pins be configured individually?
Yes, the I/O pins can be configured individually as inputs or outputs. - What type of interrupt output does the PCA9535CPW,112 have?
The device has an active LOW interrupt output. - Is the PCA9535CPW,112 compatible with other NXP devices?
Yes, it is pin-to-pin and I²C-bus address compatible with the PCF8575, though software changes may be required due to enhancements. - What is the package type of the PCA9535CPW,112?
The package type is TSSOP24.
