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MC33972TEW The NXP Semiconductors MC33972TEW is a specialized interface IC designed for switch detection. It features SPI communication and supports up to 22 switch contacts.
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MC33972TEW

Available from 1 distributors
Mfr Name: NXP Semiconductors
NXP Semiconductors
The NXP Semiconductors MC33972TEW is a specialized interface IC designed for switch detection. It features SPI communication and supports up to 22 switch contacts.
✓ Total Stock: 267 pcs
$ Price Range: $6.39

MC33972TEW Available from 1 distributor

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✓ Non-Authorised
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Optech Co.,Limited ✓
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267 pcs
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MC33972TEW Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Interface
Lead Spacing
Mounting Type
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MC33972TEW Description

Short technical summary and product information.

The MC33972TEW from NXP Semiconductors is a versatile Multiple Switch Detection Interface IC with suppressed wake-up functionality. It is designed to detect the closing and opening of up to 22 switch contacts, transferring their status to a microprocessor unit (MCU) via a serial peripheral interface (SPI).

 

This device operates within a VPWR range of 5.5 V to 26 V and offers a switch input voltage range from -14 V to 40 V. It supports selectable wetting currents of 16 mA or 2.0 mA and features 8 programmable inputs and 14 switch-to-ground inputs. The typical standby current is low, making it suitable for power-sensitive applications.

 

The MC33972TEW is available in a 32-SOICW package, designed for surface mount applications. It operates across a wide temperature range of -40 °C to 125 °C. The device also includes a 22-to-1 analog multiplexer for reading inputs as analog signals, buffered on the AMUX output pin for the MCU.

 

This IC is ideal for automotive and industrial products requiring reliable switch monitoring and low sleep-state currents. Its features include selectable wake-up on change of state and an active interrupt output on switch state changes.

MC33972TEW Quick Information

Product Type: Interface IC
Series: MC33972
Canonical Name: Multiple Switch Detection Interface IC
Subcategory: Switch Detection Interface

MC33972TEW Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

MC33972TEW Estimated Pricing

Qty Low High
1+ $6.39 $6.39

Estimated market price range - modelled values for guidance only, not live distributor offers.

MC33972TEW Features

  • Detects up to 22 switch contacts.
  • SPI serial interface for MCU communication.
  • Wide operating voltage range of 5.5V to 26V.
  • Selectable wetting current options.
  • Low standby current for power efficiency.

MC33972TEW Applications

  • Ideal for automotive applications.
  • Suitable for industrial products.
  • Used for switch status monitoring.
  • Enables low power sleep modes.

MC33972TEW FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the MC33972TEW?

The operating voltage range is 5.5 V to 26 V.

What is the switch input voltage range?

The switch input voltage range is -14 V to 40 V.

What interface protocol does the MC33972TEW use?

It uses the SPI serial interface protocol.

What is the operating temperature range?

The operating temperature range is -40 °C to 125 °C.

What package is the MC33972TEW supplied in?

It is supplied in a 32-SOICW package.

What is the typical standby current?

The typical standby current is 100 μA for VPWR and 20 μA for VDD.

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