Overview
The PCA9534ARGTR is an 8-bit I/O expander manufactured by Texas Instruments, designed for use in applications requiring remote I/O expansion via the I2C or SMBus interface. This device is part of the PCA9534 series, known for its low power consumption and versatile functionality. It is particularly suited for environments where efficient I/O management is critical, such as industrial automation, consumer electronics, and automotive systems. The PCA9534ARGTR stands out for its ability to provide a simple and cost-effective solution for expanding the I/O capabilities of microcontrollers.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| I/O Count | 8 | ||
| Interface | I2C, SMBus | ||
| Interrupt Output | Yes | ||
| Output Type | Push-Pull | ||
| Current - Sink/Source | 10mA, 25mA | ||
| Clock Frequency | 400 | kHz | |
| Supply Voltage | 2.3 to 5.5 | V | |
| Operating Temperature | -40 to 85 | °C | |
| Package | 16-QFN (3x3) |
Key Features
- Low standby current consumption (1μA max)
- Open-drain interrupt output for efficient system monitoring
- Wide operating voltage range (2.3V to 5.5V)
- 5V tolerant I/O ports for enhanced compatibility
- Hardware address pins allowing up to eight devices on the same bus
- Internal power-on reset for reliable initialization
Applications
The PCA9534ARGTR is widely used in various fields, including industrial automation for sensor interfacing, consumer electronics for button and LED control, and automotive systems for managing multiple peripherals. Its ability to expand I/O capabilities efficiently makes it a preferred choice for applications requiring robust and scalable solutions.
Q & A
1. What is the operating voltage range of the PCA9534ARGTR?
The operating voltage range is 2.3V to 5.5V.
2. How many I/O ports does the PCA9534ARGTR have?
It has 8 I/O ports.
3. Does the PCA9534ARGTR support interrupt functionality?
Yes, it features an open-drain interrupt output.
4. What is the maximum clock frequency supported?
The maximum clock frequency is 400kHz.
5. Is the PCA9534ARGTR compatible with 5V logic levels?
Yes, its I/O ports are 5V tolerant.
6. What is the package type of the PCA9534ARGTR?
It comes in a 16-QFN (3x3) package.
7. Can multiple PCA9534ARGTR devices be used on the same bus?
Yes, up to eight devices can be used on the same bus using hardware address pins.
8. What is the typical standby current consumption?
The standby current consumption is typically 1μA.
9. Does the PCA9534ARGTR have an internal power-on reset?
Yes, it includes an internal power-on reset feature.
10. What are the typical applications of the PCA9534ARGTR?
Typical applications include industrial automation, consumer electronics, and automotive systems.
