Overview
The PCA9534DBR is an 8-bit I/O expander produced by Texas Instruments, designed to enhance the input/output 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 I/O pins. The PCA9534DBR is particularly suited for embedded systems, industrial automation, and consumer electronics, offering a cost-effective solution for expanding I/O resources. Its unique selling points include low power consumption, I2C interface compatibility, and robust performance in various environments.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Number of I/O Pins | 8 | - | Configurable as input or output |
| Supply Voltage | 2.3 to 5.5 | V | Wide operating range |
| I2C Bus Frequency | Up to 400 | kHz | Standard and fast mode |
| Operating Temperature | -40 to 85 | °C | Industrial-grade |
| Package Type | TSSOP-16 | - | Compact and surface-mountable |
| Current Consumption | 1 | µA | Low power standby mode |
| Output Drive Capability | 25 | mA | Per I/O pin |
| ESD Protection | ±2000 | V | Human Body Model (HBM) |
Key Features
- 8-bit I/O expander with I2C interface for easy integration.
- Configurable I/O pins as inputs or outputs via software.
- Low power consumption, ideal for battery-powered devices.
- Wide operating voltage range (2.3V to 5.5V) for versatile applications.
- Robust ESD protection ensures reliability in harsh environments.
- Compact TSSOP-16 package for space-constrained designs.
Applications
The PCA9534DBR is widely used in various industries, including:
- Industrial Automation: Expanding I/O capabilities for PLCs and control systems.
- Consumer Electronics: Enhancing functionality in smart home devices and appliances.
- Embedded Systems: Adding I/O pins to microcontrollers in IoT devices.
- Automotive Electronics: Supporting control and monitoring functions in vehicle systems.
Q & A
1. What is the purpose of the PCA9534DBR?
The PCA9534DBR is an 8-bit I/O expander designed to add extra input/output pins to microcontrollers or digital systems.
2. What is the operating voltage range of the PCA9534DBR?
The operating voltage range is from 2.3V to 5.5V.
3. Is the PCA9534DBR compatible with I2C interfaces?
Yes, it supports I2C communication with frequencies up to 400 kHz.
4. Can the I/O pins be configured as inputs and outputs?
Yes, each of the 8 I/O pins can be individually configured as either an input or output.
5. What is the maximum current each I/O pin can drive?
Each I/O pin can drive up to 25 mA.
6. What is the package type of the PCA9534DBR?
It comes in a TSSOP-16 package.
7. Does the PCA9534DBR support low power modes?
Yes, it has a low power standby mode with a current consumption of 1 µA.
8. What is the ESD protection level of the PCA9534DBR?
It provides ±2000 V ESD protection under the Human Body Model (HBM).
9. What is the operating temperature range of the PCA9534DBR?
It operates from -40°C to 85°C, making it suitable for industrial applications.
10. Where can I find the datasheet for the PCA9534DBR?
The datasheet is available on the Texas Instruments website.
