Overview
The PCA9535DGVR, produced by Texas Instruments, is a 16-bit I2C and SMBus low-power I/O expander. This device is designed to expand the I/O capabilities of microcontrollers and other I2C or SMBus master devices. It features a low standby current consumption of 1 μA maximum, making it suitable for power-sensitive applications. The PCA9535DGVR includes configuration registers, input port registers, output port registers, and polarity inversion registers, allowing for flexible configuration of the I/O pins.
Key Specifications
| Parameter | Value |
|---|---|
| Number of I/O Pins | 16 |
| Operating Voltage Range | 2.3 V to 5.5 V |
| I2C/SMBus Frequency | 400 kHz |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | TVSOP-24 |
| Interrupt Output | Open-drain active-low interrupt output |
| Standby Current Consumption | 1 μA Max |
Key Features
- Low standby-current consumption of 1 μA maximum
- 16-bit I2C and SMBus I/O expander
- Configuration, input port, output port, and polarity inversion registers
- Open-drain active-low interrupt output
- Three hardware pins (A0, A1, and A2) for programming the fixed I2C address, allowing up to eight devices to share the same I2C bus or SMBus
- Power-on reset feature to initialize the device to its default state
Applications
- Expanding the I/O capabilities of microcontrollers and other I2C or SMBus master devices
- Industrial control systems
- Consumer electronics
- Automotive systems
- Medical devices requiring low power consumption and flexible I/O configuration
Q & A
- What is the PCA9535DGVR used for?
The PCA9535DGVR is used to expand the I/O capabilities of microcontrollers and other I2C or SMBus master devices.
- What is the operating voltage range of the PCA9535DGVR?
The operating voltage range is 2.3 V to 5.5 V.
- What is the maximum I2C/SMBus frequency supported by the PCA9535DGVR?
The maximum I2C/SMBus frequency is 400 kHz.
- What is the standby current consumption of the PCA9535DGVR?
The standby current consumption is 1 μA maximum.
- Does the PCA9535DGVR have an interrupt output?
Yes, it has an open-drain active-low interrupt output.
- How many devices can share the same I2C bus or SMBus using the PCA9535DGVR?
Up to eight devices can share the same I2C bus or SMBus using the hardware pins A0, A1, and A2 for address programming.
- What is the purpose of the power-on reset feature in the PCA9535DGVR?
The power-on reset feature initializes the device to its default state when power is applied.
- What types of registers are available in the PCA9535DGVR?
The device includes configuration, input port, output port, and polarity inversion registers.
- What is the operating temperature range of the PCA9535DGVR?
The operating temperature range is -40°C to +85°C.
- In what package type is the PCA9535DGVR available?
The PCA9535DGVR is available in a TVSOP-24 package.
