Overview
The PCA9554D,112 is a 16-pin CMOS device manufactured by NXP USA Inc., designed to provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I²C-bus/SMBus applications. This device is part of the 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 a 400 kHz clock frequency. The PCA9554D,112 is suitable for various applications where additional I/O is required, such as ACPI power switches, sensors, push buttons, LEDs, and fans.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SO16 |
| Number of I/O Pins | 8 |
| Operating Power Supply Voltage Range | 2.3 V to 5.5 V |
| I/O Tolerance | 5 V tolerant |
| Clock Frequency Range | 0 Hz to 400 kHz |
| Interrupt Output | Active LOW |
| Standby Current | Low |
| ESD Protection | Exceeds 2000 V HBM, 200 V MM, and 1000 V CDM |
| Power-on Reset | Internal power-on reset |
| Noise Filter | On SCL/SDA inputs |
Key Features
- Operating power supply voltage range of 2.3 V to 5.5 V
- 5 V tolerant I/Os
- Polarity Inversion register for active HIGH or active LOW operation
- Active LOW interrupt output
- Low standby current
- Noise filter on SCL/SDA inputs
- No glitch on power-up
- Internal power-on reset
- 8 I/O pins which default to 8 inputs
- 400 kHz clock frequency
- ESD protection exceeds 2000 V HBM, 200 V MM, and 1000 V CDM
Applications
- ACPI power switches
- Sensors
- Push buttons
- LEDs
- Fans
- Other applications requiring additional I/O expansion
Q & A
- What is the PCA9554D,112 used for?
The PCA9554D,112 is used to provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I²C-bus/SMBus applications.
- What is the operating voltage range of the PCA9554D,112?
The operating power supply voltage range is from 2.3 V to 5.5 V.
- What is the clock frequency range of the PCA9554D,112?
The clock frequency range is from 0 Hz to 400 kHz.
- Does the PCA9554D,112 have ESD protection?
- What type of interrupt output does the PCA9554D,112 have?
The PCA9554D,112 has an active LOW interrupt output.
- How many I/O pins does the PCA9554D,112 have?
The PCA9554D,112 has 8 I/O pins which default to 8 inputs.
- Does the PCA9554D,112 have internal power-on reset?
- What kind of noise filtering does the PCA9554D,112 have?
The PCA9554D,112 has noise filters on SCL/SDA inputs.
- Is the PCA9554D,112 compatible with other NXP I/O expanders?
The PCA9554D,112 is pin-to-pin and I²C-bus address compatible with the PCF8575, but software changes may be required due to enhancements.
- What is the package type of the PCA9554D,112?
The package type is SO16.
