NCA9547A-Q100 Datasheet PDF - nexperia 8-channel I2C-bus multiplexer Specs

NCA9547A-Q100 - 8-channel I2C-bus multiplexer

Datasheet Summary

Description

The NCA9547-Q100 is an octal bidirectional translating multiplexer controlled by the I²C-bus.

The SCL/ SDA upstream pair fans out to eight downstream pairs, or channels.

Only one SCn/SDn channel can be selected at a time, determined by the contents of the programmable control register.

Features

Automotive product qualification in accordance with AEC-Q100 (Grade 1).
Specified from -40 °C to +85 °C and from -40 °C to +125 °C.
1-of-8 bidirectional translating multiplexers.
I²C-bus interface logic; compatible with SMBus standards.
Active LOW reset input.
Three address pins allowing up to eight devices on the I²C-bus.
Channel selection via I²C-bus, one channel at a time.
Power-up with all channels deselected, except ch.

Datasheet Details

Part number	NCA9547A-Q100
Manufacturer	nexperia
File Size	689.85 KB
Description	8-channel I2C-bus multiplexer
Datasheet	NCA9547A-Q100 Datasheet
Additional preview pages of the NCA9547A-Q100 datasheet.

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Full PDF Text Transcription

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NCA9547A-Q100 8-channel I²C-bus multiplexer with reset Rev. 1 — 20 August 2025 Product data sheet 1. General description The NCA9547-Q100 is an octal bidirectional translating multiplexer controlled by the I²C-bus. The SCL/ SDA upstream pair fans out to eight downstream pairs, or channels. Only one SCn/SDn channel can be selected at a time, determined by the contents of the programmable control register. The device powers up with Channel 0 connected, allowing immediate communication between the controller and downstream devices (targets) on that channel. An active LOW reset input allows the NCA9547Q100 to recover from a situation where one of the downstream I²C-buses is stuck in a LOW state.

Published: Oct 14, 2025 |