Overview
The PCA9534D,512 is an 8-bit I/O expander produced by NXP USA Inc., designed to enhance the I/O capabilities of microcontrollers and other digital systems. This product falls under the category of I/O Expanders and is widely used in applications requiring additional input/output ports. Marketed as a cost-effective and versatile solution, the PCA9534D,512 is ideal for embedded systems, industrial automation, and consumer electronics. Its unique selling points include low power consumption, I2C-bus interface compatibility, and robust performance in various operating conditions.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Number of I/O Ports | 8 | - | Configurable as input or output |
| Interface Type | I2C-bus | - | Supports up to 400 kHz |
| Supply Voltage | 2.3 to 5.5 | V | Wide operating range |
| Operating Temperature | -40 to 85 | °C | Industrial-grade |
| Package | SO16 | - | Surface-mount |
| Current Consumption | 1 µA (typ) | A | Low power mode |
| Interrupt Output | Yes | - | Supports interrupt-driven operation |
Key Features
- 8-bit I/O Expansion: Provides additional I/O ports for microcontrollers with limited I/O pins.
- I2C-bus Interface: Simplifies communication with the host microcontroller.
- Low Power Consumption: Ideal for battery-powered applications.
- Interrupt Functionality: Reduces the need for continuous polling, improving efficiency.
- Wide Operating Voltage: Compatible with both 3.3V and 5V systems.
Applications
The PCA9534D,512 is widely used in various fields, including:
- Industrial Automation: Enhances I/O capabilities in control systems and sensors.
- Consumer Electronics: Used in smart home devices, LED displays, and remote controls.
- Embedded Systems: Provides additional I/O for microcontrollers in compact designs.
- Automotive Electronics: Supports applications like dashboard controls and lighting systems.
Q & A
1. What is the maximum I2C-bus speed supported by the PCA9534D,512?
The PCA9534D,512 supports I2C-bus speeds of up to 400 kHz.
2. Can the I/O ports be configured as both input and output?
Yes, each of the 8 I/O ports can be individually configured as either input or output.
3. What is the operating voltage range of the PCA9534D,512?
The operating voltage range is 2.3V to 5.5V.
4. Does the PCA9534D,512 support interrupt functionality?
Yes, it includes an interrupt output pin to signal changes in input states.
5. What is the typical current consumption of the PCA9534D,512?
The typical current consumption is 1 µA in low power mode.
6. Is the PCA9534D,512 suitable for automotive applications?
Yes, it is suitable for automotive applications due to its robust performance and wide operating temperature range.
7. What package type does the PCA9534D,512 use?
It is available in an SO16 surface-mount package.
8. Can the PCA9534D,512 operate in harsh environments?
Yes, it can operate in temperatures ranging from -40°C to 85°C, making it suitable for industrial and automotive environments.
9. How many PCA9534D,512 devices can be connected to a single I2C-bus?
Up to 8 devices can be connected, depending on the addressing configuration.
10. Is the PCA9534D,512 compatible with 3.3V microcontrollers?
Yes, it is compatible with both 3.3V and 5V systems due to its wide operating voltage range.
