Overview
The PCA9539BS,115, produced by NXP USA Inc., is a 24-pin CMOS device designed to provide 16 bits of General Purpose parallel Input/Output (GPIO) expansion. This device is part of the PCA9539 and PCA9539R series, which are tailored for I²C-bus and SMBus applications. It offers features such as interrupt and reset capabilities, making it suitable for a variety of applications requiring additional I/O ports.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | HVQFN24 |
| Number of I/O Pins | 16 |
| Operating Voltage Range | 2.3 V to 5.5 V |
| Standby Current Consumption | 1 μA max |
| Clock Frequency | 0 Hz to 400 kHz |
| Interrupt Output | Open-drain active-low |
| Reset Input | Active-low |
| ESD Protection | Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 |
| Operating Temperature Range | -40°C to 85°C |
| Package Dimensions | 4.00 mm × 4.00 mm |
Key Features
- 16-bit I²C-bus and SMBus low-power I/O port with interrupt and reset.
- 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.
- Low standby current consumption.
- Noise filter on SCL/SDA inputs and no glitch on power-up.
- Internal power-on reset and active-low reset input.
- High-current drive capability for directly driving LEDs.
- ESD protection and latch-up testing compliant with JEDEC standards.
Applications
The PCA9539BS,115 is designed for various applications requiring additional I/O ports, such as:
- ACPI power switches.
- Sensors and push buttons.
- LEDs and fans.
- General-purpose remote I/O expansion for microcontrollers.
Q & A
- What is the PCA9539BS,115 used for?
The PCA9539BS,115 is used for 16-bit I²C-bus and SMBus low-power I/O port expansion with interrupt and reset capabilities. - What is the operating voltage range of the PCA9539BS,115?
The operating voltage range is 2.3 V to 5.5 V. - What is the standby current consumption of the PCA9539BS,115?
The standby current consumption is 1 μA max. - What types of packages are available for the PCA9539 series?
The PCA9539 series is offered in SO24, TSSOP24, and HVQFN24 packages. - What is the purpose of the interrupt output on the PCA9539BS,115?
The interrupt output is an open-drain active-low output that indicates to the system master that an input state has changed. - How does the reset function work on the PCA9539BS,115?
The reset function is activated by an active-low reset input, which resets the device to its default state without de-powering it. - What is the clock frequency range for the PCA9539BS,115?
The clock frequency range is 0 Hz to 400 kHz. - Does the PCA9539BS,115 have ESD protection?
Yes, it exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101. - What is the operating temperature range of the PCA9539BS,115?
The operating temperature range is -40°C to 85°C. - Can the PCA9539BS,115 drive LEDs directly?
Yes, it has high-current drive capability for directly driving LEDs.
