Overview
The PCAL9539AHF,128 is a 16-bit I/O expander integrated circuit manufactured by NXP USA Inc. This device is part of the PCA9539 family and is designed to provide additional I/O ports for microcontrollers via an I2C or SMBus interface. It is particularly useful in applications where the microcontroller's I/O capabilities need to be extended.
Key Specifications
| Parameter | Value |
|---|---|
| Number of I/O Ports | 16 |
| Interface | I2C, SMBus |
| Operating Voltage | 2.3V to 5.5V |
| Operating Temperature | -40°C to 85°C |
| Package Type | TSSOP28, HVQFN28 |
| Configuration Registers | Four pairs of 8-bit Configuration, Input, Output, and Polarity Inversion registers |
Key Features
- 16-bit I/O port expander with I2C or SMBus interface
- Four pairs of 8-bit Configuration, Input, Output, and Polarity Inversion registers
- Active-low interrupt output
- Low standby current
- 5V tolerant I/Os
- ESD protection on all pins
Applications
- Industrial control systems
- Automotive systems
- Consumer electronics
- Medical devices
- Any application requiring I/O expansion for microcontrollers
Q & A
- What is the PCAL9539AHF,128 used for? The PCAL9539AHF,128 is used to expand the I/O capabilities of microcontrollers via an I2C or SMBus interface.
- How many I/O ports does the PCAL9539AHF,128 have? It has 16 I/O ports.
- What is the operating voltage range of the PCAL9539AHF,128? The operating voltage range is 2.3V to 5.5V.
- What are the package types available for the PCAL9539AHF,128? The device is available in TSSOP28 and HVQFN28 packages.
- Does the PCAL9539AHF,128 have ESD protection? Yes, it has ESD protection on all pins.
- What is the operating temperature range of the PCAL9539AHF,128? The operating temperature range is -40°C to 85°C.
- Can the PCAL9539AHF,128 be used in automotive systems? Yes, it can be used in automotive systems.
- Does the PCAL9539AHF,128 support polarity inversion? Yes, it supports polarity inversion through its registers.
- What type of interface does the PCAL9539AHF,128 use? It uses an I2C or SMBus interface.
- Is the PCAL9539AHF,128 5V tolerant? Yes, the I/Os are 5V tolerant.
