Overview
The PCA9535D,118 is a 16-bit General Purpose Input/Output (GPIO) expander manufactured by NXP USA Inc. This CMOS device is designed for I²C-bus and SMBus applications, offering enhanced features such as higher drive capability, 5 V I/O tolerance, lower supply current, and individual I/O configuration. It is part of the NXP family of I²C-bus I/O expanders, providing a simple solution for adding additional I/Os in various applications, including ACPI power switches, sensors, push buttons, LEDs, and fans.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Power Supply Voltage | 2.3 V to 5.5 V |
| I/O Tolerance | 5 V tolerant |
| Number of I/O Pins | 16 |
| Default I/O Configuration | Inputs |
| Clock Frequency | 0 Hz to 400 kHz |
| ESD Protection | Exceeds 2000 V HBM, 200 V MM, and 1000 V CDM |
| Package Types | SO24, TSSOP24, HVQFN24, HWQFN24 |
| Power-on Reset | Internal power-on reset, VPOR typical 1.7 V, max 2.2 V |
Key Features
- 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
- Active LOW interrupt output
- Low standby current
- No glitch on power-up
- Internal power-on reset
- Noise filter on SCL/SDA inputs
- Individual I/O configuration
- High ESD protection
Applications
The PCA9535D,118 is suitable for a variety of applications where additional I/Os are required, such as:
- ACPI power switches
- Sensors
- Push buttons
- LEDs
- Fans
- Other general-purpose I/O expansion needs
Q & A
- What is the PCA9535D,118 used for?
The PCA9535D,118 is used for expanding the number of General Purpose Input/Output (GPIO) pins in I²C-bus and SMBus applications.
- What is the operating voltage range of the PCA9535D,118?
The operating voltage range is from 2.3 V to 5.5 V.
- How many I/O pins does the PCA9535D,118 have?
The device has 16 I/O pins.
- What is the default configuration of the I/O pins?
The I/O pins default to inputs.
- What is the clock frequency range of the PCA9535D,118?
The clock frequency range is from 0 Hz to 400 kHz.
- Does the PCA9535D,118 have ESD protection?
Yes, it exceeds 2000 V HBM, 200 V MM, and 1000 V CDM.
- What types of packages are available for the PCA9535D,118?
The device is available in SO24, TSSOP24, HVQFN24, and HWQFN24 packages.
- Does the PCA9535D,118 have an internal power-on reset?
Yes, it has an internal power-on reset with VPOR typical 1.7 V, max 2.2 V.
- Can the PCA9535D,118 be used with other I²C-bus devices?
Yes, it is compatible with other I²C-bus devices and can share the same I²C-bus/SMBus with up to eight devices.
- What is the purpose of the Polarity Inversion register?
The Polarity Inversion register allows for the polarity of the read register to be inverted, enabling active HIGH or active LOW operation.
