NCA9539 Datasheet PDF - nexperia Low-voltage 16-bit I2C and SMBus low-power I/O expander Specs

NCA9539 - Low-voltage 16-bit I2C and SMBus low-power I/O expander

Datasheet Summary

Description

The NCA9539 provides 16 bits of General Purpose Input/Output (GPIO) expansion with interrupt and reset for I²C-bus/SMBus applications.

It is designed for a wide voltage range of 1.65 V to 5.5 V.

Features

I²C-bus to parallel port expander.
Operating power supply voltage range of 1.65 V to 5.5 V.
Low standby current consumption:.
2.5 µA (maximum).
Schmitt-trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs.
Vhys = 0.10 × VCC (typical).
Noise filter on SCL and SDA inputs.
5 V tolerant I/Os.
16 I/O pins which power up configured in input state.
Open-drain a.

Datasheet Details

Part number	NCA9539
Manufacturer	nexperia
File Size	466.45 KB
Description	Low-voltage 16-bit I2C and SMBus low-power I/O expander
Datasheet	NCA9539 Datasheet
Additional preview pages of the NCA9539 datasheet.

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Full PDF Text Transcription

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NCA9539 Low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output, reset pin and configuration registers Rev. 2 — 18 October 2023 Product data sheet 1. General description The NCA9539 provides 16 bits of General Purpose Input/Output (GPIO) expansion with interrupt and reset for I²C-bus/SMBus applications. It is designed for a wide voltage range of 1.65 V to 5.5 V. Nexperia GPIO expanders provide an elegant solution when additional IOs are needed while keeping the interconnections to a minimum, for example, in ACPI power switches, sensors, push buttons, LEDs and fan control. The NCA9539 contains a set of 8 bit input, output, configuration and polarity inversion registers. At power up all IOs default to inputs.

Published: Jul 11, 2024 |