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MC34978

Part Number	MC34978
Manufacturer	NXP
Description	22-channel multiple switch detection interface
Published	Jul 16, 2020
Detailed Description	NXP Semiconductors Technical Data 22 channel multiple switch detection interface with programmable wetting current Docu...
Datasheet	MC34978 PDF File

Overview

NXP Semiconductors Technical Data 22 channel multiple switch detection interface with programmable wetting current Document Number: MC33978 Rev.
8.
0, 7/2018 33978 34978 The 33978 is designed to detect the closing and opening of up to 22 switch contacts.
The switch status, either open or closed, is transferred to the microprocessor unit (MCU) through a serial peripheral interface (SPI).
This SMARTMOS device also features a 24-to-1 analog multiplexer for reading the input channels as analog inputs.
The analog selected input signal is buffered and provided on the AMUX output pin for the MCU to read.
Independent programmable wetting currents are available as needed for the application.
A batte...

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