Overview
The PCA9536DG4 is a remote 4-bit I2C and SMBus I/O expander produced by Texas Instruments. This device is designed to provide general-purpose remote I/O expansion for most microcontroller families through the I2C interface. It operates within a voltage range of 1.65-V to 5.5-V VCC, making it versatile for various applications. The PCA9536DG4 features configuration registers that allow the system controller to set the I/Os as either inputs or outputs, and it includes input port, output port, and polarity inversion registers for flexible operation.
Key Specifications
| Parameter | Value |
|---|---|
| VCC Operating Voltage | 1.65-V to 5.5-V |
| Standby Current Consumption | 1 μA Max |
| I/O Configuration | Input or Output selection |
| Registers | Configuration, Input Port, Output Port, Polarity Inversion |
| I2C Bus Compatibility | 2.3-V to 5.5-V VCC operation |
| Package Type | NanoFree™ Package |
Key Features
- Low standby current consumption of 1 μA Max, reducing power consumption in idle states.
- Configuration registers for setting I/Os as inputs or outputs.
- Input Port, Output Port, and Polarity Inversion registers for flexible operation.
- Internal pullup resistors to VCC, ensuring I/Os are configured as inputs with a high voltage level at power-on.
- Compatibility with the I2C and SMBus interfaces, allowing for communication with most microcontroller families.
Applications
The PCA9536DG4 is suitable for a variety of applications that require remote I/O expansion, including:
- Embedded systems and microcontroller-based projects.
- Industrial automation and control systems.
- Automotive electronics and infotainment systems.
- Consumer electronics and appliances.
- Medical devices and healthcare equipment.
Q & A
- What is the operating voltage range of the PCA9536DG4?
The PCA9536DG4 operates within a voltage range of 1.65-V to 5.5-V VCC. - What is the standby current consumption of the PCA9536DG4?
The standby current consumption is 1 μA Max. - How are the I/Os configured on the PCA9536DG4 at power-on?
The I/Os are configured as inputs with a weak pullup to VCC at power-on. - What types of registers does the PCA9536DG4 feature?
The device features configuration, input port, output port, and polarity inversion registers. - Is the PCA9536DG4 compatible with the SMBus interface?
Yes, it is compatible with both I2C and SMBus interfaces. - What package type is the PCA9536DG4 available in?
The PCA9536DG4 is available in the Texas Instruments NanoFree™ package. - Can the polarity of the input port be inverted on the PCA9536DG4?
Yes, the polarity of the input port can be inverted using the Polarity Inversion register. - How does the system controller reset the PCA9536DG4 in case of improper operation?
The system controller can reset the PCA9536DG4 in the event of a timeout or other improper operation by sending appropriate commands over the I2C interface. - Is the PCA9536DG4 still in production?
No, the PCA9536DG4 is obsolete and no longer manufactured. Available substitutes are recommended. - What are some common applications of the PCA9536DG4?
Common applications include embedded systems, industrial automation, automotive electronics, consumer electronics, and medical devices.
