PCAL6416APW,118

I/o Expanders Overview

The PCAL6416APW,118 is a 16-bit I2C-bus/SMBus I/O expander with interrupt output, reset, and configuration registers. It operates within a supply voltage range of 1.65 V to 5.5 V and supports bidirectional voltage-level translation between SCL/SDA lines at 1.8 V, 2.5 V, 3.3 V, or 5 V and Port P outputs at the same levels. The device features an active LOW reset input, an open-drain active LOW interrupt output, and a maximum clock frequency of 400 kHz. It includes Schmitt trigger inputs for noise immunity and provides ESD protection exceeding 2000 V Human-Body Model. The component is housed in a TSSOP24 package.

I/o Expanders Feature Summary

• Bidirectional voltage-level translation capability between I2C bus and port voltages
• Agile I/O features including programmable drive strength and input latching
• Active LOW reset input and open-drain interrupt output functionality
• Internal power-on reset and noise filtering on serial data lines

I/o Expanders Applications

• Battery-powered mobile applications requiring remote I/O expansion
• Interfacing microcontrollers with sensors, push buttons, and keypads
• Mixed-signal environments connecting processors to higher voltage peripherals

I/o Expanders Procurement Notes

Verify the specific ordering suffix ',118' against the manufacturer's official documentation to confirm the packaging method and reel specifications. Ensure the TSSOP24 package designation matches the required board layout constraints. Cross-reference the RoHS compliance status directly with the current product data sheet revision before finalizing procurement orders.

I/o Expanders Selection Notes

Select this component when software compatibility with PCA6416A is required alongside enhanced Agile I/O capabilities. Verify that the dual power rail requirements for VDD(I2C-bus) and VDD(P) align with the system design. Confirm that the 25 mA sink capability meets the load requirements for direct LED driving without external transistors.

I/o Expanders Part Context

This part belongs to the PCAL6416A series, which serves as a pin-to-pin replacement for the PCA6416A. It extends the standard I/O expander functionality by adding configurable output drive strengths and interrupt masking features. The series is designed to simplify interconnections in systems needing additional GPIOs while minimizing interface complexity.

I/o Expanders Replacement Considerations

The PCAL6416APW is a direct pin-to-pin drop-in replacement for the PCA6416APW. When substituting, note that the PCAL6416A powers up with all I/O interrupts masked by default, unlike the PCA6416A.