Overview
The PCA9535D,112 is a 16-bit General Purpose parallel Input/Output (GPIO) expander developed by NXP USA Inc. This CMOS device is designed for I²C-bus/SMBus applications, offering enhanced features such as higher drive capability, 5 V I/O tolerance, lower supply current, and individual I/O configuration. The PCA9535D,112 is part of the PCA9535 series, which includes variations like the PCA9535 and PCA9535C, each with specific characteristics to suit different application needs.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Power Supply Voltage | 2.3 V to 5.5 V |
| I/O Configuration | 16 bits, configurable as inputs or outputs |
| I/O Tolerance | 5 V tolerant |
| Clock Frequency | 0 Hz to 400 kHz |
| Package Type | SO24 (Small Outline 24-pin) |
| Temperature Range | -40 °C to +85 °C |
| ESD Protection | Exceeds 2000 V HBM, 200 V MM, and 1000 V CDM |
| Power-on Reset | Internal power-on reset, VPOR typical 1.7 V, max 2.2 V |
| Interrupt Output | Active LOW interrupt output |
Key Features
- 16-bit I/O port with interrupt capability
- Operating power supply voltage range of 2.3 V to 5.5 V
- 5 V tolerant I/Os
- Polarity Inversion register for flexible configuration
- Active LOW interrupt output
- Low standby current for power efficiency
- No glitch on power-up
- Internal power-on reset
- Noise filter on SCL/SDA inputs
- High-impedance open-drain outputs (PCA9535C variant)
Applications
- ACPI power switches
- Sensors
- Push buttons
- LEDs
- Fans
- General-purpose I/O expansion in various embedded systems
Q & A
- What is the PCA9535D,112 used for?
The PCA9535D,112 is used for expanding the number of General Purpose Input/Output (GPIO) ports in I²C-bus/SMBus applications.
- What is the operating voltage range of the PCA9535D,112?
The operating voltage range is from 2.3 V to 5.5 V.
- How many I/O bits does the PCA9535D,112 provide?
The PCA9535D,112 provides 16 bits of GPIO expansion.
- What is the clock frequency range supported by the PCA9535D,112?
The clock frequency range is from 0 Hz to 400 kHz.
- Does the PCA9535D,112 have internal power-on reset?
- What type of I/O tolerance does the PCA9535D,112 offer?
The PCA9535D,112 offers 5 V tolerant I/Os.
- Can multiple PCA9535D,112 devices share the same I²C-bus?
- What is the temperature range for the PCA9535D,112?
The temperature range is from -40 °C to +85 °C.
- Does the PCA9535D,112 have ESD protection?
- What is the difference between PCA9535 and PCA9535C?
The PCA9535C has all I/O pins as high-impedance open-drain outputs, whereas the PCA9535 does not.
- How does the polarity inversion register work?
The polarity inversion register allows the polarity of the read register to be inverted, enabling flexible configuration of the I/O ports.
