Overview
The PCA9534ARGTRG4 is an 8-bit I/O expander produced by Texas Instruments, designed for low-power applications requiring remote I/O expansion via the I2C or SMBus interface. This device is ideal for systems needing additional I/O ports, such as industrial automation, consumer electronics, and embedded systems. Its key strengths include low standby current consumption, wide operating voltage range, and robust ESD protection, making it a versatile and reliable choice for designers.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 2.3 to 5.5 | V | |
| Standby Current | 1 | µA | Max |
| I/O Ports | 8 | Configurable as input or output | |
| I2C Bus Frequency | 400 | kHz | |
| Interrupt Output | Open-drain, active low | ||
| ESD Protection | 2000 (HBM), 200 (MM), 1000 (CDM) | V | |
| Operating Temperature | -40 to 85 | °C | |
| Package | QFN16 |
Key Features
- Low standby current consumption (1 µA max).
- Wide operating voltage range (2.3V to 5.5V).
- 8 configurable I/O ports with polarity inversion capability.
- Open-drain interrupt output for efficient system monitoring.
- Robust ESD protection exceeding industry standards.
- Compatible with I2C and SMBus interfaces.
Applications
The PCA9534ARGTRG4 is widely used in applications requiring additional I/O ports, such as industrial automation systems, consumer electronics, and embedded controllers. Its low power consumption and flexible configuration make it suitable for battery-powered devices, while its robust ESD protection ensures reliability in harsh environments. Typical use cases include LED control, sensor interfacing, and system monitoring.
Q & A
1. What is the operating voltage range of the PCA9534ARGTRG4?
The operating voltage range is 2.3V to 5.5V.
2. How many I/O ports does the PCA9534ARGTRG4 provide?
It provides 8 configurable I/O ports.
3. What is the maximum I2C bus frequency supported?
The maximum I2C bus frequency is 400 kHz.
4. Does the PCA9534ARGTRG4 support interrupt functionality?
Yes, it features an open-drain, active-low interrupt output.
5. What is the standby current consumption?
The standby current consumption is 1 µA (max).
6. Is the PCA9534ARGTRG4 compatible with SMBus?
Yes, it is compatible with both I2C and SMBus interfaces.
7. What is the ESD protection level of this device?
It provides ESD protection of 2000V (HBM), 200V (MM), and 1000V (CDM).
8. Can the I/O ports be configured as inputs and outputs?
Yes, the I/O ports are configurable as either inputs or outputs.
9. What is the package type of the PCA9534ARGTRG4?
It is available in a QFN16 package.
10. What are the typical applications of this device?
Typical applications include LED control, sensor interfacing, and system monitoring in industrial and consumer electronics.
