NXP Semiconductors MCZ33287EGR2

Overview

MCZ33287EGR2 from NXP Semiconductors (formerly Freescale) is an automotive-grade contact monitoring and dual low-side protected driver IC. It interfaces eight high-voltage switch inputs (rated to 40 V, ratiometric to V_BAT) with a microcontroller via one dedicated and seven multiplexed outputs, while providing two current-limited (535 mA typ), thermally protected, internally clamped (50 V) low-side drivers for inductive/capacitive loads. Used in vehicle body control modules for door/window/seat switch sensing and actuator drive.

For engineers reviewing the MCZ33287EGR2 datasheet, MCZ33287EGR2 pinout, MCZ33287EGR2 application, or MCZ33287EGR2 equivalent, key selection considerations include its 20-pin SOICW package, dual-driver fault reporting (DIAGD1/DIAGD2), ratiometric input thresholds, 55 µA standby current, and Pb-free EG suffix compliance with automotive AEC-Q100 requirements.

Technical Context

The MCZ33287EGR2 integrates an 8-to-1 analog multiplexer with diagnostic logic for switch status reporting and two independent low-side MOSFET drivers with per-channel overtemperature shutdown and output clamp protection. Its input sense architecture supports both switch-to-battery and switch-to-ground configurations with hysteresis (1.0 V typ) and internal voltage references tied to V_BAT.

Driver control uses complementary logic: CD1 is active-low (driver ON when low), CD2 is active-high (driver ON when high), with dedicated command pins enabling independent enable/disable and fault detection. Diagnostic outputs DIAGD1 and DIAGD2 feed directly to MCU GPIOs without latching or filtering, supporting real-time fault response in safety-critical body electronics.

Key Specifications

Pinout & Package

MCZ33287EGR2 is housed in a 20-pin wide-body SOIC (SOICW) package with exposed thermal pad (not electrically connected), JEDEC MS-013AC compliant, Pb-free (EG suffix), moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar contact monitoring and dual low-side driver applications.

Compared with MC33883DG and TPIC2101PWP, the MCZ33287EGR2 uniquely combines eight-channel ratiometric sensing, analog multiplexing, and dual protected low-side drivers in one SOICW package - reducing BOM count, PCB area, and software complexity for integrated body electronics modules.

Availability

MCZ33287EGR2 is available at Aetrix Electronics and suitable for automotive body control units, door modules, seat control systems, and trunk/liftgate interface designs requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.

Supply support for MCZ33287EGR2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader focused on automotive, industrial, IoT, and communications infrastructure solutions, with deep expertise in automotive electronics and functional safety.

The MCZ33287EGR2 belongs to NXP's legacy analog automotive portfolio, designed specifically for robust, low-power contact monitoring and protected load driving in harsh vehicle environments - targeting body electronics subsystems where reliability, integration, and AEC-Q100 compliance are mandatory.

FAQ

What is the maximum input voltage rating for the MCZ33287EGR2 sense inputs?

The MCZ33287EGR2 sense inputs (IN0–IN7) are rated to 40 V maximum, with absolute maximum ratings defined in Table 2 of the datasheet. This allows direct connection to 24 V automotive systems and withstands load-dump transients without external clamping. Operation remains functional at VDD1 down to 5.0 V, though some parameters are downgraded per the extended limit specification.

Does the MCZ33287EGR2 support both switch-to-ground and switch-to-battery configurations?

Yes, the MCZ33287EGR2 supports both configurations: IN0–IN7 accept either switch-to-ground (pull-down) or switch-to-battery (pull-up) signals. Input thresholds are ratiometric to VDD1, ensuring consistent logic-level interpretation across varying battery voltages - a key feature confirmed in the "Eight High-Voltage Sense Inputs" section and Figure 7 of the datasheet.

How does the MCZ33287EGR2 report driver faults such as overload or short-circuit?

The MCZ33287EGR2 reports faults via two dedicated open-drain diagnostic outputs: DIAGD1 reflects OUTD1 status and DIAGD2 reflects OUTD2 status. Per Table 5, each pin asserts low during overload, short-to-GND, or open-load conditions. These outputs connect directly to MCU GPIOs and are neither latched nor filtered - enabling real-time hardware-triggered interrupt responses without software polling.

What is the purpose of the AD0–AD2 pins on the MCZ33287EGR2?

The AD0–AD2 pins serve as a 3-bit address bus controlling the internal 8-to-1 analog multiplexer. As defined in Table 6, they select which of IN0–IN6 or DIAGD1/DIAGD2 appears on the OUT1 pin. This allows a single MCU analog input to sample eight switch inputs or two diagnostic channels - reducing required GPIOs and simplifying PCB layout compared to discrete implementations.

Is the MCZ33287EGR2 pin-compatible with the MC33287DW/R2 variant?

Yes, the MCZ33287EGR2 is pin-compatible with the MC33287DW/R2. Both use the identical 20-pin SOICW package (98ASB42343B), share identical pin numbering and functions per Table 1, and differ only in RoHS compliance (EG = Pb-free, DW = leaded). Electrical specifications, timing, and functional behavior are identical - enabling direct replacement in existing designs without layout changes.