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| SKU: | AX12482 |
| Model: | MCZ33972EW |
| Condition: | Aftermarket |
| Proximity: | No |
| Panic Button: | No |
| Weight: | 0.01 kg |
| Categories: | EEproms |
| Manufacturer: | Chinese Factory |
The MCZ33972EW is a professional-grade automotive IC chip designed as a Multiple Switch Detection Interface (MSDI) for advanced vehicle electronic systems. It supports up to 22 switch inputs, detecting open and closed states and transmitting data to the MCU via SPI communication. A built-in 22-to-1 analog multiplexer enables precise analog input monitoring through the AMUX output pin.
Engineered for both automotive and industrial environments, the MCZ33972EW delivers low standby current consumption in Sleep Mode and flexible Normal Mode operation with programmable pull-up and pull-down currents — making it an ideal solution for applications requiring reliable switch monitoring, minimal power draw, and robust performance under demanding conditions.
| Detail | Description |
|---|---|
| Part Number | MCZ33972EW |
| Package | SSOP32 |
| Type | Multiple Switch Detection Interface (MSDI) |
| Switch Inputs | Up to 22 |
| Communication Protocol | SPI |
| Multiplexer | 22-to-1 Analog Multiplexer |
| Application | Automotive & Industrial |
| Operating Modes | Sleep Mode (low standby current) / Normal Mode (programmable pull-up or pull-down) |
Suitable for automotive ECUs, turn signal systems, body control modules, industrial control boards, and embedded electronic systems.
MCZ33972EW vs. Similar ICs – Comparison
| Feature | MCZ33972EW | MCZ33996 | MCZ33290 |
|---|---|---|---|
| Package Type | SSOP32 (Pb-free) | SOIC32 (Pb-free) | SOIC20 (Pb-free) |
| Switch Inputs | 22 inputs (8 programmable + 14 GND) | 16 low-side switches | N/A — dedicated ISO K-Line interface |
| Analog Multiplexer | ✅ 22-to-1 AMUX | ❌ | ❌ |
| Communication Protocol | SPI (3.3V / 5V) | SPI (3.3V / 5V) | K-Line ISO9141 |
| Operating Voltage | 5.5V – 26V (40V max input) | 5.5V – 26V | 8V – 18V |
| Sleep Mode Current | VPWR: 100μA / VDD: 20μA | VPWR: 150μA | <50μA typical |
| Wake-Up Function | ✅ Change of state | ✅ Input trigger | ✅ Via K-Line activity |
| Main Application | Switch detection in BCMs, turn signals & dashboards | Power distribution & load driving | Vehicle diagnostics & OBD-II communication |
| Extra Functions | Selectable wetting current (16mA / 2mA) | Integrated drivers for relays & lamps | Bidirectional K-Line transceiver |
| SKU | AX12482 |
| Model | MCZ33972EW |
| Condition | Aftermarket |
| Manufacturer | Chinese Factory |
| Released Year | 2026 |
| Warranty | International |
| Weight | 0.01 kg |
REVIEWS
"Exactly what I needed."
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