| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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2,264 pcs
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2264 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The MC33978AES from NXP Semiconductors is a versatile 22-channel multiple switch detection interface IC. It is designed to monitor the open or closed status of up to 22 switch contacts, transferring this information to a microprocessor unit (MCU) via a serial peripheral interface (SPI).
This device offers flexible operation with a wide input voltage range from 4.5 V to 36 V. It supports individually selectable input currents in Normal and Low-power modes, with low quiescent current options ideal for automotive and industrial applications requiring reduced sleep-state power consumption. The MC33978AES also includes a 24-to-1 analog multiplexer for reading inputs as analog signals, a battery monitor, and a temperature monitor, all accessible through the AMUX output pin.
Packaged in a 32-VFQFN Exposed Pad, the MC33978AES is designed for surface mount applications with wettable flank termination. Its robust design and multiple operational modes make it suitable for various control and monitoring systems where reliable switch status detection is critical.
| Qty | Low | High |
|---|---|---|
| 1+ | $6.39 | $6.39 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The MC33978AES operates fully from 4.5 V to 36 V.
The MC33978AES features 22 switch detection channels.
The MC33978AES uses an SPI interface.
The MC33978AES is available in a 32-VFQFN Exposed Pad package.
The MC33978AES is designed for Surface Mount, Wettable Flank mounting.
The low-power mode current (IBATP) is 30 μA and (IDDQ) is 10 μA.