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NXP Semiconductors MCZ33903DD3EKR2
- Part No.:
- MCZ33903DD3EKR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
MCZ33903DD3EKR2.pdf
- Description:
- IC INTERFACE SPECIALIZED 32SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,243
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Product details
Overview
MCZ33903DD3EKR2 from NXP Semiconductors is a second-generation System Basis Chip (SBC) integrating high-speed CAN (ISO 11898-2/5), dual LIN 2.1 interfaces, 3.3 V MCU power regulator, and fail-safe state machine for automotive ECU power management. It supports up to three wake-up inputs with configurable LIN termination pins, operates from -40 °C to 125 °C, and uses SMARTMOS technology for robust fault diagnostics in engine control and body electronics.
For engineers reviewing the MCZ33903DD3EKR2 datasheet, MCZ33903DD3EKR2 pinout, MCZ33903DD3EKR2 application, or MCZ33903DD3EKR2 equivalent, this page delivers verified technical context, real-world use cases, validated alternatives, and supply-ready sourcing details - all grounded in NXP's Rev. 15.0 datasheet and official package documentation.
Technical Context
The MCZ33903DD3EKR2 implements a dedicated fail-safe state machine with watchdog supervision, SPI-configurable LP modes, and independent monitoring of VDD, VSUP, and LIN/CAN bus integrity. Its dual LIN 2.1 interface supports master node termination on LIN-T1/LIN-T2 pins, while the embedded ISO 11898-5 CAN transceiver delivers 40 kb/s–1 Mb/s operation with bus-failure diagnostics and SPLIT output for common-mode noise suppression.
Power architecture includes a 3.3 V VDD regulator (non-PNP extensible), a fully protected 5 V-CAN regulator, and MUX-OUT for analog monitoring of internal voltage rails and external sense resistors. Wake-up sources include CAN/LIN activity, I/O transitions, SPI messages, and VDD overcurrent detection - all active in low-power states without MCU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CAN Interface | ISO 11898-2 and -5 compliant; supports 40 kb/s to 1 Mb/s baud rates with integrated bus failure diagnostics and SPLIT output. |
| LIN Interfaces | Dual LIN 2.1 channels with programmable master termination on LIN-T1/LIN-T2 pins; J2602-2 compatible. |
| VDD Output | 3.3 V ±2% regulated output; not extensible with external PNP per datasheet Note 2. |
| Operating Temperature | -40 °C to +125 °C ambient; qualified for automotive underhood and ECU module environments. |
| Supply Voltage Range | VSUP1/VSUP2: -0.3 V to 28 V DC (40 V transient); supports cranking and load-dump conditions. |
| LP Mode Current | Extremely low quiescent current in low-power modes; enables battery-sensitive always-on ECU functions. |
| Wake-up Inputs | Configurable as 1–3 wake-up sources: CAN/LIN bus activity, I/O transition, SPI message, or VDD overcurrent. |
Pinout & Package
MCZ33903DD3EKR2 is housed in a 32-pin SOIC exposed pad package (SOT1762-2), footprint-compatible with MC33903S and MC33903P variants. The lead frame is connected to GND for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | Battery Supply Input | Main supply input for internal regulators, POR circuitry, and VDD generation; internally tied to VSUP1/VSUP2. |
| VDD | MCU Power Output | 3.3 V regulated output for microcontroller core logic; not extensible with external PNP transistor. |
| CANH / CANL | CAN Bus Physical Interface | Differential high-speed CAN outputs compliant with ISO 11898-2/5; support bus fault detection and fail-safe shutdown. |
| LIN-T1 / LIN-T2 | LIN Master Termination | Configurable as HS output pins for LIN bus pull-up termination resistors; also usable as wake-up-capable I/Os. |
| SAFE | Fault Indicator Output | Open-drain active-low signal asserted during VDD undervoltage, watchdog timeout, RST fault, or critical internal error. |
| MUX-OUT | Analog Monitoring Output | Multiplexed analog output for SPI-selected internal signals (e.g., VDD, VSUP, current sense); includes switchable internal pull-down. |
| INT / RST | Interrupt & Reset Control | INT: open-drain interrupt output (SPI-configurable flags); RST: active-low reset output with external reset monitoring capability. |
Key Features
| Feature | Design Value |
|---|---|
| Dual LIN 2.1 with termination | Two independent LIN master interfaces with programmable pull-up termination on LIN-T1/LIN-T2, eliminating need for external resistors in master-node designs. |
| Fail-safe state machine | Hardware-enforced safety logic that asserts SAFE pin and disables outputs upon VDD undervoltage, watchdog timeout, or RST pin anomaly - no software dependency. |
| SPI-configurable diagnostics | Real-time monitoring of VDD, VSUP, CAN bus status, LIN bus activity, and I/O states via SPI register reads and flag reporting. |
| Low-power wake-up flexibility | Up to three independent wake-up sources (CAN/LIN, I/O edge, SPI message, VDD overcurrent) active in LP modes without MCU involvement. |
| Integrated 5 V-CAN regulator | Fully protected 5 V output for CAN transceiver; includes overvoltage, overtemperature, and short-circuit protection with automatic recovery. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Centralized power and communication management for gasoline/diesel engine ECUs requiring CAN diagnostics and LIN-peripheral control (e.g., throttle, sensors, actuators). IC Role / Device Role / Timing Role: System Basis Chip providing MCU VDD regulation, CAN physical layer, dual LIN interfaces, and fail-safe reset coordination. Use Value: Reduces BOM count by integrating CAN transceiver, LIN drivers, and power regulators; enables deterministic wake-up and safe shutdown during cranking or load dump. |
Use Scenario: Power and communication hub in vehicle body electronics managing door modules, lighting, HVAC, and seat controls via LIN subnetworks. IC Role / Device Role / Timing Role: Dual-LIN master controller with wake-up capability and diagnostic reporting for distributed peripheral nodes. Use Value: Eliminates discrete LIN transceivers and voltage regulators; supports J2602-2-compliant LIN topology with built-in termination and fault reporting. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Electric Power Steering (EPS) ECU |
|
Use Scenario: Sensor aggregation and communication interface for radar/camera modules requiring robust CAN connectivity and low-quiescent-current sleep modes. IC Role / Device Role / Timing Role: High-integrity CAN interface with bus-failure diagnostics and ultra-low IQ LP modes for always-on sensor monitoring. Use Value: Enables fail-safe CAN bus monitoring and rapid wake-up from deep sleep (<10 µA typical), meeting ASIL-B functional safety requirements. |
Use Scenario: Safety-critical motor control ECU where precise timing, fault detection, and redundant reset signaling are mandatory for steering assist functionality. IC Role / Device Role / Timing Role: Fail-safe power manager with hardware watchdog, SAFE output assertion, and SPI-accessible diagnostic registers. Use Value: Provides hardware-level safety mechanisms (e.g., VDD monitoring, RST supervision, SAFE pin) independent of MCU firmware execution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar system basis chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCZ33903DS3EKR2 | Single LIN 2.1 interface; same 32-pin SOIC package and 3.3 V VDD output; lacks second LIN channel and associated LIN-T2 pin. | Used in cost-optimized BCMs or ECUs with only one LIN subnetwork; reduces pin count and software complexity. | Select when dual-LIN capability is unnecessary and board space or BOM cost must be minimized. |
| MCZ33903DP3EKR2 | No LIN interface; adds third wake-up input; retains same package, VDD, CAN, and MUX-OUT features. | Targeted at CAN-only applications like instrument clusters or gateway modules requiring enhanced wake-up flexibility without LIN overhead. | Choose when LIN is unused and additional wake-up sources improve system responsiveness in CAN-centric architectures. |
Compared with MCZ33903DD3EKR2, MCZ33903DS3EKR2 reduces LIN capability but maintains identical power and CAN functionality, while MCZ33903DP3EKR2 removes LIN entirely to prioritize wake-up versatility - both share pinout compatibility and thermal design, enabling reuse of PCB layout and thermal management.
Availability
MCZ33903DD3EKR2 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS sensor hubs, and electric power steering systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCZ33903DD3EKR2 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in automotive-grade power management and communication ICs.
The MC33903 family is part of NXP's System Basis Chip portfolio, designed specifically for automotive electronic control units requiring integrated power regulation, high-speed CAN, LIN interfaces, and hardware-based functional safety mechanisms.
FAQ
What is the maximum CAN baud rate supported by MCZ33903DD3EKR2?
The MCZ33903DD3EKR2 supports high-speed CAN operation from 40 kb/s up to 1 Mb/s, fully compliant with ISO 11898-2 and ISO 11898-5 standards. This range accommodates both legacy automotive networks and modern high-bandwidth applications such as ADAS sensor data streaming, with built-in bus-failure diagnostics active across the entire speed range.
Does MCZ33903DD3EKR2 support external PNP extension for its VDD regulator?
No, MCZ33903DD3EKR2 does not allow external PNP transistor extension for its 3.3 V VDD regulator. Per NXP datasheet Note 2, this capability is explicitly disabled for the MC33903 series - unlike earlier MC33905 variants - to ensure stability and simplify thermal design in compact ECU layouts.
How many wake-up sources does MCZ33903DD3EKR2 support in low-power mode?
The MCZ33903DD3EKR2 supports up to three configurable wake-up sources in low-power modes: CAN bus activity, LIN bus activity, I/O pin transitions, SPI message reception, and VDD overcurrent detection. Configuration is performed via SPI registers, allowing dynamic reassignment without hardware changes.
What is the function of the MUX-OUT pin on MCZ33903DD3EKR2?
The MUX-OUT pin on MCZ33903DD3EKR2 provides multiplexed analog monitoring of internal parameters including VDD, VSUP, and external current-sense resistor voltage. Selection is controlled via SPI, and an integrated switchable pull-down resistor enables accurate VDD current measurement without external components.
Is MCZ33903DD3EKR2 pin-compatible with other MC33903 variants?
Yes, MCZ33903DD3EKR2 is footprint-compatible with MCZ33903DS3EKR2 and MCZ33903DP3EKR2 in the same 32-pin SOIC exposed pad (SOT1762-2) package. Pin assignments for power, CAN, SPI, and safety signals are identical, enabling shared PCB layout across single-LIN, dual-LIN, and LIN-free configurations.
MCZ33903DD3EKR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- System Basis Chip
- Interface:
- CAN, LIN
- Voltage - Supply:
- 5.5V ~ 28V
- Supplier Device Package:
- 32-SSOP-EP
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
MCZ33903DD3EKR2 FAQ
1.How can I place an order for MCZ33903DD3EKR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCZ33903DD3EKR2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCZ33903DD3EKR2 reliable?
The price and inventory of MCZ33903DD3EKR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCZ33903DD3EKR2 is usually 5 days.
3.What payment methods are accepted for MCZ33903DD3EKR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCZ33903DD3EKR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCZ33903DD3EKR2?
MCZ33903DD3EKR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCZ33903DD3EKR2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCZ33903DD3EKR2?
For technical support, including MCZ33903DD3EKR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCZ33903DD3EKR2 requirements.
6.How does Aetrix verify that MCZ33903DD3EKR2 is sourced from the original manufacturer or authorized distributors?
All MCZ33903DD3EKR2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCZ33903DD3EKR2 meets industry standards.
7.What is the process for return or replacement of MCZ33903DD3EKR2?
All MCZ33903DD3EKR2 units undergo pre-shipment inspection (PSI). If there is an issue with MCZ33903DD3EKR2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCZ33903DD3EKR2 part is unused and in its original packaging.
Return procedure for MCZ33903DD3EKR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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