Overview
The PCA6408APW,118, produced by NXP USA Inc., is an 8-bit general purpose I/O expander designed to provide remote I/O expansion for most microcontroller families via the I²C-bus interface. This device is particularly useful in scenarios where additional I/Os are required without increasing the complexity of interconnections. It is suitable for various applications, including battery-powered mobile devices, sensor interfaces, push buttons, and keypads.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | TSSOP16 (Thin Shrink Small Outline Package) |
| Number of Bits | 8-bit |
| Interface | I²C-bus and SMBus |
| Operating Voltage Range | 1.65 V to 5.5 V |
| Operating Temperature Range | -40°C to +85°C |
| I/O Configuration | Configurable as inputs or outputs |
| Output Sink Capability | 25 mA per port |
| Addressing | Hardware pin (ADDR) for programming I²C-bus address |
| Compliance | PbFree, EU RoHS, Halogen Free, REACH SVHC compliant |
Key Features
- I²C-bus to parallel port expander
- Bidirectional voltage-level translation between different voltage levels (e.g., 1.8 V, 2.5 V, 3.3 V, 5 V)
- Level shifting capability for mixed signal environments
- Configurable I/Os with input, output, and polarity inversion registers
- Reset feature via hardware pin (RESET)
- Interrupt output capability
- Low power consumption
- Support for up to two devices on the same I²C-bus or SMBus using the ADDR pin
Applications
- Battery-powered mobile devices
- Sensor interfaces
- Push buttons and keypads
- Mixed signal environments requiring voltage-level translation
- Any system requiring additional I/O expansion with minimal interconnection complexity
Q & A
- What is the PCA6408APW,118 used for?
The PCA6408APW,118 is an 8-bit general purpose I/O expander used to provide remote I/O expansion for most microcontroller families via the I²C-bus interface.
- What are the operating voltage and temperature ranges of the PCA6408APW,118?
The operating voltage range is 1.65 V to 5.5 V, and the operating temperature range is -40°C to +85°C.
- Can the I/Os of the PCA6408APW,118 be configured?
- Does the PCA6408APW,118 support voltage-level translation?
- How many devices can share the same I²C-bus or SMBus using the PCA6408APW,118?
- What is the output sink capability of the PCA6408APW,118?
- Is the PCA6408APW,118 compliant with environmental regulations?
- How can the PCA6408APW,118 be reset?
- What package types are available for the PCA6408APW,118?
- What are some common applications of the PCA6408APW,118?
