MC33978AES - NXP USA Inc.

Manufacturer Part Number

MC33978AES

Manufacturer

NXP Semiconductors

Introduction

The MC33978AES is a switch detection interface designed for detecting the status of multiple switches within automotive and industrial applications.

Product Features and Performance

Capable of monitoring 22 external switches

Wettable flanks for improved solderability and inspection

Integrated 10-bit A/D converter for analog input signal

Programmable logic and interrupt function for customized applications

Temperature range from -40°C to +125°C for harsh environments

Product Advantages

Designed for high-voltage applications

Robust ESD protection and electromagnetic compatibility

Optimized for low current consumption

Multiple diagnostic functions for fault detection

SPI interface for easy communication with microcontrollers

Key Technical Parameters

Voltage Supply: 3V ~ 5.25V

Interface protocol: SPI

Number of switches supported: 22

Package/Case: 32-VFQFN Exposed Pad

Mounting Type: Surface Mount, Wettable Flank

Quality and Safety Features

Includes fail-safe features

Reverse battery protection

Overvoltage and undervoltage detection

Thermal shutdown protection

Compatibility

Compatible with a wide range of microcontrollers with SPI interface

Application Areas

Automotive electronics

Industrial control systems

Building automation

Product Lifecycle

Active product status

Not reported to be nearing discontinuation

Replacement or upgrade options may be provided by the manufacturer's future developments

Several Key Reasons to Choose This Product

Integration of 22 channels for switch detection reduces system complexity

SPI interface ensures simple integration with existing digital systems

Built-in diagnostics and protection features ensure reliability and safety

Wettable flank QFN package provides enhanced manufacturability and quality inspection

Broad voltage supply range and high ESD protection are ideal for automotive applications