Overview
The PCA9537DPZ, manufactured by NXP USA Inc., is a 10-pin CMOS device designed to provide 4 bits of General Purpose parallel Input/Output (GPIO) expansion. This I/O expander is specifically tailored for I2C-bus and SMBus applications, offering features such as interrupt and reset capabilities. It is part of NXP's extensive family of I2C-bus I/O expanders, aimed at enhancing system functionality by providing additional I/O ports for various applications including ACPI power switches, sensors, push-buttons, LEDs, and fans.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of GPIO Bits | 4 | |
| Operating Power Supply Voltage | 2.3 V to 5.5 V | V |
| I/O Voltage Tolerance | 5 V | V |
| I2C-bus Clock Frequency | Up to 400 kHz | kHz |
| Interrupt Output | Active LOW | |
| Reset Input | Active LOW | |
| Package Type | 10-TSSOP | |
| Operating Temperature Range | -40 °C to +85 °C | °C |
| Low-level Output Current (VDD = 4.5 V) | Up to 24 mA | mA |
Key Features
- 4-bit I2C-bus and SMBus low power I/O port with interrupt and reset.
- 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 and active LOW reset input.
- Low standby current.
- Noise filter on SCL/SDA inputs.
- No glitch on power-up.
- Internal power-on reset.
Applications
The PCA9537DPZ is suitable for a variety of applications where additional I/O ports are required. These include:
- ACPI power switches.
- Sensors.
- Push-buttons.
- LEDs.
- Fans.
Q & A
- What is the PCA9537DPZ used for?
The PCA9537DPZ is used to provide 4 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus and SMBus applications. - What is the operating voltage range of the PCA9537DPZ?
The operating power supply voltage range is from 2.3 V to 5.5 V. - Is the PCA9537DPZ 5 V tolerant?
Yes, the PCA9537DPZ has 5 V tolerant I/Os. - What type of interrupt output does the PCA9537DPZ have?
The PCA9537DPZ has an active LOW interrupt output. - How many GPIO bits does the PCA9537DPZ provide?
The PCA9537DPZ provides 4 bits of GPIO expansion. - What is the maximum I2C-bus clock frequency for the PCA9537DPZ?
The maximum I2C-bus clock frequency is up to 400 kHz. - What is the package type of the PCA9537DPZ?
The package type is 10-TSSOP. - What is the operating temperature range of the PCA9537DPZ?
The operating temperature range is from -40 °C to +85 °C. - Does the PCA9537DPZ have internal power-on reset?
Yes, the PCA9537DPZ has an internal power-on reset. - What are some common applications of the PCA9537DPZ?
Common applications include ACPI power switches, sensors, push-buttons, LEDs, and fans.
