Overview
The PCA9538PW/Q900,118 is an 8-bit I2C-bus and SMBus low power I/O port developed by NXP Semiconductors. This device is designed to provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion with interrupt and reset capabilities. It is particularly useful in applications where additional I/O is required, such as in industrial and consumer electronics. The PCA9538PW/Q900,118 is part of the NXP family of I2C-bus I/O expanders and is known for its low power consumption and versatility in various system configurations.
Key Specifications
| Attribute | Value |
|---|---|
| Interface Type | I2C/SMBus |
| Clock Frequency - Max | 400 kHz |
| No of I/O Lines | 8 |
| Supply Voltage - Nom | 2.3 V to 5.5 V (3.0 V to 5.5 V for PCA9538PW/Q900) |
| Supply Current | 104 µA |
| Output Type | Push Pull |
| Output Current | 25 mA |
| Operating Temperature Range | -40°C to +125°C |
| Storage Temperature Range | -65°C to +150°C |
| Power Dissipation | 0.2 W |
| Moisture Sensitivity Level | 1 |
| Package Style | TSSOP-16 |
| Mounting Method | Surface Mount |
Key Features
- 8-bit I2C-bus GPIO with interrupt and reset capabilities
- Operating power supply voltage range of 2.3 V to 5.5 V (3.0 V to 5.5 V for PCA9538PW/Q900)
- 5 V tolerant I/Os
- Polarity Inversion register for active HIGH or active LOW operation
- Active LOW interrupt output and reset input
- Low power consumption, especially when I/Os are held LOW
- Hardware address pins (A0 and A1) allowing up to four devices to share the same I2C-bus/SMBus
Applications
The PCA9538PW/Q900,118 is typically used in various applications where additional I/O is necessary, such as:
- Industrial electronics for controlling sensors, push-buttons, LEDs, and fans
- Consumer electronics for expanding I/O capabilities in devices
- ACPI power switches and other system control applications
Q & A
- What is the PCA9538PW/Q900,118?
The PCA9538PW/Q900,118 is an 8-bit I2C-bus and SMBus low power I/O port with interrupt and reset capabilities developed by NXP Semiconductors.
- What is the interface type of the PCA9538PW/Q900,118?
The interface type is I2C/SMBus.
- What is the maximum clock frequency of the PCA9538PW/Q900,118?
The maximum clock frequency is 400 kHz.
- How many I/O lines does the PCA9538PW/Q900,118 provide?
The device provides 8 I/O lines.
- What is the operating voltage range of the PCA9538PW/Q900,118?
The operating voltage range is 2.3 V to 5.5 V (3.0 V to 5.5 V for PCA9538PW/Q900).
- What is the typical supply current of the PCA9538PW/Q900,118?
The typical supply current is 104 µA.
- What is the output type of the PCA9538PW/Q900,118?
The output type is Push Pull.
- What is the maximum output current of the PCA9538PW/Q900,118?
The maximum output current is 25 mA.
- What is the operating temperature range of the PCA9538PW/Q900,118?
The operating temperature range is -40°C to +125°C.
- What is the package style of the PCA9538PW/Q900,118?
The package style is TSSOP-16.
- What are some common applications of the PCA9538PW/Q900,118?
Common applications include industrial and consumer electronics, ACPI power switches, and other system control applications.
