Overview
The PCAL9555APW,118 from NXP USA Inc. is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander designed for I²C-bus/SMBus applications. This device is part of the Agile series and is optimized for use in various industrial and automotive environments. It features interrupt capabilities and weak pull-up resistors, making it versatile for expanding the GPIO capabilities of microcontrollers.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 1.8 V to 5.5 V | V |
| Interface | I²C, SMBus | - |
| Number of GPIOs | 16 | - |
| Package Type | 24-TSSOP (0.173, 4.40mm Width) | - |
| Operating Temperature | -40°C to 85°C | °C |
| I²C Bus Frequency | 400 kHz | kHz |
| Output Current (Source/Sink) | Up to 25 mA per I/O, 100 mA per octal | mA |
| ESD Protection | 2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model | V |
Key Features
- Low standby-current consumption of 1 μA max
- I²C to parallel port expander
- Open-drain active-low interrupt output
- 5-V tolerant I/O ports
- Compatible with most microcontrollers
- Address by three hardware address pins for use of up to eight devices
- Polarity inversion register
- Latched outputs with high-current drive capability for directly driving LEDs
- ESD protection exceeding JESD 22 standards
Applications
- Servers
- Industrial automation systems
- Automotive systems
- Consumer electronics
- Medical devices
Q & A
- What is the primary function of the PCAL9555APW,118?
The primary function is to expand the GPIO capabilities of a microcontroller via an I²C or SMBus interface.
- What is the operating voltage range of the PCAL9555APW,118?
The operating voltage range is from 1.8 V to 5.5 V.
- What is the maximum I²C bus frequency supported by the PCAL9555APW,118?
The maximum I²C bus frequency supported is 400 kHz.
- How many GPIOs does the PCAL9555APW,118 provide?
The device provides 16 GPIOs.
- What is the package type of the PCAL9555APW,118?
The package type is 24-TSSOP (0.173, 4.40mm Width).
- What is the operating temperature range of the PCAL9555APW,118?
The operating temperature range is from -40°C to 85°C.
- Does the PCAL9555APW,118 have ESD protection?
- Can the PCAL9555APW,118 drive LEDs directly?
- How many devices can be addressed using the PCAL9555APW,118?
- What is the standby-current consumption of the PCAL9555APW,118?
