Overview
The NXP PCA9554PW,112 is a 16-pin CMOS device designed to provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications. This I/O expander is part of NXP's family of I2C-bus I/O expanders and offers several enhancements including higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O configuration, and a 400 kHz clock frequency. The device is packaged in a TSSOP-16 package and is surface mountable, making it suitable for a variety of applications where additional I/O is required.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | NXP USA Inc. |
| Part Number | PCA9554PW,112 |
| Interface Type | I2C/SMBus |
| Number of I/O Lines | 8 |
| Supply Voltage | 2.3 V to 5.5 V |
| Supply Current | 85 mA |
| Clock Frequency - Max | 400 kHz |
| Package Style | TSSOP-16 |
| Mounting Method | Surface Mount |
| Operating Temperature | -40°C to 85°C |
| Interrupt Output | Yes |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
Key Features
- 8-bit General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications.
- Higher drive capability and 5 V I/O tolerance.
- Lower supply current and individual I/O configuration.
- 400 kHz clock frequency.
- Open-drain interrupt output activated when any input state differs from its corresponding Input Port register state.
- Power-on reset sets the registers to their default values and initializes the device state machine.
- Three hardware pins (A0, A1, A2) vary the fixed I2C-bus address, allowing up to eight devices to share the same I2C-bus/SMBus.
Applications
The PCA9554PW,112 is designed for various applications where additional I/O is needed, such as:
- ACPI power switches.
- Sensors.
- Push buttons.
- LEDs.
- Fans.
- Other general-purpose I/O expansion needs in electronic devices like TVs, set-top boxes, mobile phones, and automotive systems.
Q & A
- What is the PCA9554PW,112 used for? The PCA9554PW,112 is used for providing 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications.
- What is the maximum clock frequency of the PCA9554PW,112? The maximum clock frequency is 400 kHz.
- What is the supply voltage range for the PCA9554PW,112? The supply voltage range is 2.3 V to 5.5 V.
- How many I/O lines does the PCA9554PW,112 provide? It provides 8 I/O lines.
- What is the package style of the PCA9554PW,112? The package style is TSSOP-16.
- Is the PCA9554PW,112 RoHS compliant? Yes, it is lead free and RoHS compliant.
- What is the operating temperature range of the PCA9554PW,112? The operating temperature range is -40°C to 85°C.
- Does the PCA9554PW,112 have an interrupt output? Yes, it has an open-drain interrupt output.
- How many devices can share the same I2C-bus/SMBus using the PCA9554PW,112? Up to eight devices can share the same I2C-bus/SMBus.
- What is the moisture sensitivity level (MSL) of the PCA9554PW,112? The MSL is 1 (Unlimited).
