Overview
The PCA9535HF,118 is a 16-bit I2C-bus and SMBus I/O expander produced by NXP USA Inc. This CMOS device is designed to provide general-purpose parallel input/output (GPIO) expansion, making it an ideal solution for applications requiring additional I/O ports. The PCA9535HF is part of the PCA9535 series, which offers enhanced features such as higher drive capability, 5 V I/O tolerance, lower supply current, and individual I/O configuration. It is particularly useful in scenarios where additional I/O is needed for devices like ACPI power switches, sensors, push buttons, LEDs, and fans.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | HWQFN24 (4x4) |
| Number of I/O Pins | 16 |
| Operating Power Supply Voltage | 2.3 V to 5.5 V |
| I/O Voltage Tolerance | 5 V |
| Clock Frequency | 0 Hz to 400 kHz |
| Interrupt Output | Active LOW |
| ESD Protection | 2000 V HBM, 200 V MM, 1000 V CDM |
| Operating Temperature Range | -40°C to +85°C |
| Package Quantity | 6000 (reel) |
Key Features
- 16-bit I2C-bus and SMBus interface
- Individual I/O configuration (input or output selection)
- Polarity Inversion register for active HIGH or active LOW operation
- Low standby current and low power consumption
- No glitch on power-up and internal power-on reset
- Noise filter on SCL/SDA inputs
- Three hardware pins (A0, A1, A2) for varying the fixed I2C-bus address, allowing up to eight devices to share the same I2C-bus/SMBus
Applications
The PCA9535HF,118 is suitable for a variety of applications, including:
- ACPI power switches
- Sensors and monitoring systems
- Push buttons and user interfaces
- LED indicators and lighting systems
- Fans and motor control
- Industrial automation and control systems
Q & A
- What is the PCA9535HF,118 used for?
The PCA9535HF,118 is used as a 16-bit I2C-bus and SMBus I/O expander to provide additional GPIO ports in various applications. - What is the operating voltage range of the PCA9535HF,118?
The operating power supply voltage range is from 2.3 V to 5.5 V. - How many I/O pins does the PCA9535HF,118 have?
The device has 16 I/O pins. - What is the clock frequency range of the PCA9535HF,118?
The clock frequency range is from 0 Hz to 400 kHz. - Does the PCA9535HF,118 have ESD protection?
Yes, it has ESD protection exceeding 2000 V HBM, 200 V MM, and 1000 V CDM. - What is the operating temperature range of the PCA9535HF,118?
The operating temperature range is from -40°C to +85°C. - Can multiple PCA9535HF,118 devices share the same I2C-bus/SMBus?
Yes, up to eight devices can share the same I2C-bus/SMBus using the three hardware address pins (A0, A1, A2). - What type of interrupt output does the PCA9535HF,118 have?
The device has an active LOW interrupt output. - Does the PCA9535HF,118 have noise filtering on its inputs?
Yes, it has noise filters on the SCL/SDA inputs. - What is the package type and quantity of the PCA9535HF,118?
The package type is HWQFN24 (4x4), and it is available in reels of 6000 units.
