Description

The PCA9535PWP is a 24-pin CMOS device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C/SMBus applications. It is developed to enhance the Philips family of I2C I/O expanders. The PCA9535PWP offers several improvements including higher drive capability, 5V I/O tolerance, lower supply current, individual I/O configuration, and smaller packaging. It is commonly used when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc.

Specifications and Features

• Operating power supply voltage range of 2.3V - 5.5V
• 5V tolerant I/Os
• Polarity inversion register
• Active LOW interrupt output
• Low standby current
• Noise filter on SCL/SDA inputs
• No glitch on power-up
• Internal power-on reset
• 16 I/O pins which default to 16 inputs
• 0 to 400 kHz clock frequency
• ESD protection exceeds 2000V HBM per JESD22-A114, 200V MM per JESD22-A115, and 1000V CDM per JESD22-C101
• Latch-up testing is done to JESDEC Standard JESD78 which exceeds 100mA
• Offered in three different packages: SO24, TSSOP24, and HVQFN24

Application Scenarios

The PCA9535PWP can be used in various I2C/SMBus applications where additional GPIO expanders are required. It is commonly used with ACPI power switches, sensors, push buttons, LEDs, fans, and more.

Comparison

• Higher drive capability
• 5V I/O tolerance
• Lower supply current
• Individual I/O configuration
• Smaller packaging

• None mentioned