PCA9535APW,118

I/o Expanders Overview

The PCA9535APW,118 is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander designed for I2C-bus and SMBus applications. It features an operating power supply voltage range of 1.65 V to 5.5 V and supports Fast-mode clock frequencies up to 400 kHz. The device includes an open-drain active LOW interrupt output and internal power-on reset functionality. It operates within a temperature range of -40 °C to +85 °C and is housed in a TSSOP24 package.

I/o Expanders Feature Summary

• Pin and function compatible with the standard PCA9535 device
• Low standby current consumption at typical voltages
• Schmitt-trigger action on SCL and SDA inputs for noise immunity
• Direct LED driving capability with latched outputs

I/o Expanders Applications

• ACPI power switches
• Sensor interface expansion
• Push button input scanning
• LED control systems
• Fan control circuits

I/o Expanders Procurement Notes

Verify the specific ordering suffix '118' against the manufacturer's official documentation to confirm tape and reel packaging specifications. Ensure the component matches the NXP Semiconductors datasheet revision 1.1 requirements for the TSSOP24 package before finalizing procurement orders.

I/o Expanders Selection Notes

Select this component when interfacing with microprocessors requiring lower supply voltages down to 1.65 V. It serves as a direct pin-to-pin replacement for the standard PCA9535. Consider the PCAL9535A if Agile I/O features are required instead of standard GPIO expansion.

I/o Expanders Part Context

This part belongs to the PCA9535A series, which represents the low-voltage variant of the industry-standard PCA9535 I/O expanders. It maintains functional compatibility while extending the operational voltage range to support modern low-power logic families.

I/o Expanders Replacement Considerations

The PCA9535APW,118 is explicitly documented as a pin-to-pin replacement for the standard PCA9535. Verify that the target application does not require the additional Agile I/O features found in the PCAL9535A.