Overview
The PCA9534DWR is an 8-bit I/O port expander manufactured by Texas Instruments. It is designed to provide additional I/O ports for microcontrollers and other devices via the I2C and SMBus interfaces. This component is particularly useful in applications where the number of available I/O ports is limited. The PCA9534DWR is housed in a SOIC-16 package and is known for its low power consumption and robust performance in various industrial and consumer electronics applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 2.3 to 5.5 | V | |
| I/O Ports | 8 | ||
| Interface | I2C, SMBus | ||
| Interrupt Output | Yes | Open-drain, active low | |
| Clock Frequency | 400 | kHz | |
| Operating Temperature | -40 to 85 | °C | |
| Package | SOIC-16 |
Key Features
- Low standby current consumption of 1μA (max)
- Open-drain interrupt output
- 5V tolerant I/O ports
- Internal power-on reset
- No glitch on power-up
- Latch-up performance exceeds 100mA per JESD 78, Class II
- ESD protection exceeds JESD 22 standards
Applications
The PCA9534DWR is widely used in various fields such as industrial automation, consumer electronics, and automotive electronics. It is particularly useful in applications requiring additional I/O ports, such as LED displays, keypad interfaces, and sensor arrays. Its robust design and low power consumption make it suitable for battery-powered devices and harsh industrial environments.
Q & A
What is the supply voltage range for the PCA9534DWR?
The supply voltage range is 2.3V to 5.5V.
How many I/O ports does the PCA9534DWR provide?
It provides 8 I/O ports.
What interfaces does the PCA9534DWR support?
It supports I2C and SMBus interfaces.
Does the PCA9534DWR have an interrupt output?
Yes, it has an open-drain, active low interrupt output.
What is the maximum clock frequency supported by the PCA9534DWR?
The maximum clock frequency is 400kHz.
What is the operating temperature range for the PCA9534DWR?
The operating temperature range is -40°C to 85°C.
What package does the PCA9534DWR come in?
It comes in a SOIC-16 package.
Is the PCA9534DWR suitable for battery-powered devices?
Yes, its low power consumption makes it suitable for battery-powered devices.
Can the PCA9534DWR be used in harsh industrial environments?
Yes, its robust design makes it suitable for harsh industrial environments.
What are some typical applications of the PCA9534DWR?
Typical applications include LED displays, keypad interfaces, and sensor arrays.
