NLVPCA9535EDTR2G

I/o Expanders Overview

The NLVPCA9535EDTR2G is a low-voltage 16-bit I/O expander manufactured by onsemi. It interfaces via an I2C bus and SMBus protocol, providing extended general-purpose digital input and output capabilities for embedded systems. The device operates within a supply voltage range of 1.65 V to 5.5 V, ensuring compatibility with various logic families. It features configurable direction registers for each port and includes interrupt output functionality to signal state changes to the host processor. Packaged in a TSSOP-24 surface-mount format, it supports clock frequencies up to 1 MHz.

I/o Expanders Feature Summary

• Provides 16 bidirectional general-purpose digital I/O channels accessible through a two-wire serial interface.
• Includes configuration registers that allow individual pin direction setting for input or output operations.
• Features an interrupt output mechanism that alerts the system when any input port state differs from its last sampled value.

I/o Expanders Applications

• Embedded control systems requiring additional GPIO pins beyond microcontroller limits.
• Consumer electronics utilizing low-voltage logic interfaces.
• Industrial automation panels needing remote I/O expansion over I2C networks.

I/o Expanders Procurement Notes

Verify the specific suffix 'EDTR2G' against official onsemi documentation to confirm tape-and-reel packaging and RoHS compliance status. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Cross-reference the datasheet revision date to validate electrical characteristics before finalizing procurement specifications.

I/o Expanders Selection Notes

Select this component when a system requires 16 additional digital I/O lines controlled via I2C. Confirm that the host controller supports the required voltage levels between 1.65 V and 5.5 V. Evaluate the available I2C address space, as multiple devices may share addresses if configured differently. Consider the TSSOP-24 package dimensions for board layout constraints.

I/o Expanders Part Context

This part belongs to the PCA9535 family of low-voltage I/O expanders. It serves as a peripheral interface solution for microcontrollers lacking sufficient native ports. The device simplifies system design by offloading simple digital control tasks from the main processor via a standard serial bus.

I/o Expanders FAQ

What is the maximum I2C clock frequency supported?

The device supports I2C clock frequencies up to 1 MHz.

Does the device support SMBus communication?

Yes, the NLVPCA9535EDTR2G is compatible with both I2C and SMBus protocols.

How are the I/O directions configured?

Each of the 16 I/O bits has a dedicated configuration register bit that determines whether the pin functions as an input or output.