Overview
The PCA9535CPW118 is a 16-bit I/O expander designed by NXP USA Inc. for I2C and SMBus applications. This device operates within a voltage range of 2.3V to 5.5V and features 16 General Purpose Input/Output (GPIO) pins. It is particularly useful in industrial and consumer electronics where additional I/O expansion is required. The PCA9535CPW118 is housed in a 24-TSSOP package and offers low power consumption, individual I/O configuration, and an active LOW interrupt output.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage Range | 2.3V to 5.5V |
| Number of GPIOs | 16 |
| I2C/SMBus Clock Frequency | Up to 400 kHz |
| Package Type | 24-TSSOP |
| I/O Configuration | Individual configuration as inputs or outputs |
| Interrupt Output | Active LOW |
| Standby Current | Low |
| ESD Protection | Exceeds 2000 V HBM, 200 V MM, and 1000 V CDM |
| I/O Tolerance | 5 V tolerant |
Key Features
- Operating power supply voltage range of 2.3V to 5.5V
- 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
- Noise filter on SCL/SDA inputs
- Individual I/O configuration
- Higher drive capability and lower supply current compared to previous models
- ESD protection exceeding industry standards
Applications
The PCA9535CPW118 is widely used in various applications requiring GPIO expansion, including:
- ACPI power switches
- Sensors
- Push buttons
- LED control
- Fans
- Industrial and consumer electronics
Q & A
- What is the operating voltage range of the PCA9535CPW118?
The PCA9535CPW118 operates within a voltage range of 2.3V to 5.5V.
- How many GPIOs does the PCA9535CPW118 provide?
The device provides 16 General Purpose Input/Output (GPIO) pins.
- What is the maximum I2C/SMBus clock frequency supported by the PCA9535CPW118?
The device supports a clock frequency of up to 400 kHz.
- What type of package is the PCA9535CPW118 housed in?
The PCA9535CPW118 is housed in a 24-TSSOP package.
- Does the PCA9535CPW118 have an interrupt output?
Yes, the device features an active LOW interrupt output.
- What is the standby current of the PCA9535CPW118?
The device has a low standby current.
- Is the PCA9535CPW118 compliant with RoHS and other environmental directives?
Yes, the PCA9535CPW118 is compliant with EU RoHS, ELV, and China RoHS directives.
- Can multiple PCA9535CPW118 devices share the same I2C/SMBus?
Yes, up to eight devices can share the same I2C/SMBus using different address configurations.
- What are the key applications of the PCA9535CPW118?
The device is used in applications such as ACPI power switches, sensors, push buttons, LED control, and fans).
- Does the PCA9535CPW118 have ESD protection?
Yes, the device has ESD protection exceeding 2000 V HBM, 200 V MM, and 1000 V CDM).
- How does the PCA9535CPW118 handle power-on reset?
The device features an internal power-on reset that initializes the device state machine once the supply voltage reaches the operating level).
