Overview
The PCA9535CHF,118 is a 16-bit I2C and SMBus low-power I/O expander produced by NXP USA Inc. This integrated circuit is designed to provide a flexible and efficient way to expand the I/O capabilities of microcontrollers and other system masters. The device features two 8-bit configuration registers, input port registers, output port registers, and polarity inversion registers, allowing for versatile input/output operations.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 24-WFQFN Exposed Pad |
| Supply Voltage (VCC) | 1.65 V to 5.5 V |
| Standby Current | 1 μA Max |
| Operating Temperature | -40°C to 85°C |
| Interface | I2C and SMBus |
| Number of I/Os | 16 bits (two 8-bit ports) |
| Interrupt Output | Open-drain active-low |
Key Features
- Low standby-current consumption of 1 μA Max.
- I2C to parallel port expander.
- Open-drain active-low interrupt output.
- Two 8-bit configuration registers for input or output selection.
- Input port, output port, and polarity inversion registers.
- Power-on reset feature to initialize registers and I2C/SMBus state machine.
- High-impedance inputs when configured as inputs, allowing input voltage up to 5.5 V.
Applications
The PCA9535CHF,118 is suitable for a variety of applications where I/O expansion is necessary, such as in industrial control systems, consumer electronics, and automotive systems. It is particularly useful in scenarios where low power consumption and flexible I/O configuration are required.
Q & A
- What is the PCA9535CHF,118 used for? The PCA9535CHF,118 is used as an I2C and SMBus low-power I/O expander to expand the I/O capabilities of microcontrollers and other system masters.
- What is the package type of the PCA9535CHF,118? The package type is 24-WFQFN Exposed Pad.
- What is the supply voltage range for the PCA9535CHF,118? The supply voltage range is from 1.65 V to 5.5 V.
- What is the maximum standby current of the PCA9535CHF,118? The maximum standby current is 1 μA.
- What interface does the PCA9535CHF,118 support? It supports I2C and SMBus interfaces.
- How many I/O bits does the PCA9535CHF,118 have? It has 16 bits, divided into two 8-bit ports.
- What type of interrupt output does the PCA9535CHF,118 have? It has an open-drain active-low interrupt output.
- Can the PCA9535CHF,118 be reset? Yes, it has a power-on reset feature to initialize the registers and I2C/SMBus state machine.
- What is the operating temperature range of the PCA9535CHF,118? The operating temperature range is from -40°C to 85°C.
- Can the input voltage exceed VCC when configured as an input? Yes, the input voltage can be raised above VCC to a maximum of 5.5 V when configured as an input.
