Overview
The PCA9555D,118 is a 16-bit I2C and SMBus I/O Expander with Interrupt Output produced by NXP USA Inc. This device is designed to provide 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications. It is part of NXP Semiconductors' family of I2C-bus I/O expanders, offering enhanced features such as higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O configuration, and smaller packaging options.
The PCA9555D,118 is particularly useful in scenarios where additional I/O is required, such as for ACPI power switches, sensors, push buttons, LEDs, and fans. It operates within a voltage range of 2.3 V to 5.5 V and has an operating temperature range of -40°C to 85°C, making it versatile for various environments.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer Part Number | PCA9555D,118 |
| Manufacturer | NXP USA Inc. |
| Description | IC I/O EXPANDER I2C 16B 24SOIC |
| Package / Case | 24-SOIC (0.295", 7.50mm Width) |
| Voltage - Supply | 2.3 V ~ 5.5 V |
| Operating Temperature | -40°C ~ 85°C |
| Number of I/O | 16 |
| Mounting Type | Surface Mount |
| Interface | I²C, SMBus |
| Output Type | Push-Pull |
| Current - Output Source/Sink | 10mA, 25mA |
| Clock Frequency | 400kHz |
| Interrupt Output | Yes |
Key Features
- 16 general-purpose I/O pins with individual configuration as inputs or outputs
- I2C and SMBus interface for easy integration with microcontrollers and embedded systems
- Interrupt output for efficient system monitoring
- Power-on reset (POR) functionality to initialize the device state machine
- 5 V tolerant I/Os and low standby current
- Noise filter on SCL/SDA inputs and no glitch on power-up
- ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101
- Polarity Inversion register for flexible configuration
- Compact surface mount package for space-constrained designs
Applications
- Industrial automation and control
- Home and building automation
- Embedded systems and IoT devices
- Automotive electronics
- ACPI power switches, sensors, push buttons, LEDs, and fans
Q & A
- What is the PCA9555D,118 used for?
The PCA9555D,118 is used to provide 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications.
- What is the operating voltage range of the PCA9555D,118?
The operating voltage range is 2.3 V to 5.5 V.
- What is the operating temperature range of the PCA9555D,118?
The operating temperature range is -40°C to 85°C.
- How many I/O pins does the PCA9555D,118 have?
The device has 16 general-purpose I/O pins.
- What interfaces does the PCA9555D,118 support?
The device supports I²C and SMBus interfaces.
- Does the PCA9555D,118 have an interrupt output?
Yes, it has an active LOW interrupt output.
- What is the clock frequency of the PCA9555D,118?
The clock frequency is up to 400 kHz.
- What is the current source/sink capability of the PCA9555D,118?
The device can source/sink up to 10mA and 25mA.
- Does the PCA9555D,118 have power-on reset functionality?
Yes, it has a power-on reset (POR) functionality.
- In what applications is the PCA9555D,118 commonly used?
It is commonly used in industrial automation, home and building automation, embedded systems, IoT devices, and automotive electronics.
- What are some of the key features of the PCA9555D,118?
Key features include 16 general-purpose I/O pins, I2C and SMBus interface, interrupt output, power-on reset, and 5 V tolerant I/Os.
