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NXP Semiconductors MCZ33903DD5EKR2
- Part No.:
- MCZ33903DD5EKR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
MCZ33903DD5EKR2.pdf
- Description:
- IC INTERFACE SPECIALIZED 32SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,646
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Product details
Overview
MCZ33903DD5EK/R2 from NXP Semiconductors is a System Basis Chip (SBC) Gen2 integrating high-speed CAN (ISO 11898-2/5), dual LIN 2.1 interfaces, 5.0 V MCU regulator, fail-safe state machine, and four configurable wake-up/I/O pins. It operates from -40 °C to 125 °C and targets automotive ECU power management with diagnostics in compact SOIC-32 exposed pad (SOT1762-2) package.
For engineers reviewing the MCZ33903DD5EK/R2 datasheet, MCZ33903DD5EK/R2 pinout, MCZ33903DD5EK/R2 application, or MCZ33903DD5EK/R2 equivalent, this page delivers verified technical context, real-world use cases, validated alternatives, and supply-ready procurement details - all grounded in NXP's Rev. 15.0 datasheet and official orderable part documentation.
Technical Context
The MCZ33903DD5EK/R2 implements a SMARTMOS-based power management architecture with integrated 5.0 V VDD regulator, fully protected 5.0 V CAN driver supply, and dual LIN transceivers supporting J2602-2 and LIN 2.1. Its fail-safe state machine monitors VDD, RST, watchdog timeout, and bus faults to assert SAFE (active-low) on critical failure.
It supports multiple low-power (LP) modes with sub-10 µA quiescent current, wake-up via CAN/LIN activity, I/O transitions, SPI message, timer, or VDD overcurrent detection, and provides MUX-OUT for analog monitoring of internal signals including VDD, VSUP, and temperature-sensed voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Output | 5.0 V ±2%, supplies MCU core logic; no external PNP support per datasheet note. |
| CAN Interface | ISO 11898-2 and -5 compliant, 40 kb/s–1.0 Mb/s baud rate; includes local/bus fault diagnostics and fail-safe operation. |
| LIN Interfaces | Dual LIN 2.1 channels with programmable termination (LIN-T1/LIN-T2); supports master node configuration. |
| Wake-up Inputs | Three dedicated wake-up capable pins (I/O-0, LIN-T1/I/O-2, LIN-T2/I/O-3); each configurable as input or HS output. |
| Operating Temp | -40 °C to +125 °C ambient; qualified for automotive underhood and ECU applications. |
| Package | SOIC-32 exposed pad (SOT1762-2); footprint-compatible with MC33903D/S/P variants. |
| Quiescent Current | <10 µA in LP VDD-off mode; enables long-term battery-powered sleep in vehicle modules. |
Pinout & Package
MCZ33903DD5EK/R2 uses a 32-pin SOIC exposed pad package (SOT1762-2), thermally optimized for automotive power dissipation. Pin layout is footprint-compatible with other MC33903 variants (S/P/D), enabling design reuse across LIN configurations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | Battery Supply Input | Main supply rail (−0.3 V to 28 V DC); powers internal regulators and reset circuitry. |
| VDD | MCU Power Output | Stable 5.0 V ±2% output for microcontroller core; not extensible with external PNP. |
| CANH / CANL | CAN Physical Layer | Differential high-speed CAN bus interface compliant with ISO 11898-2/5; includes bus fault detection. |
| LIN-T1 / LIN-T2 | LIN Master Termination | Configurable as LIN bus termination resistors (1 kΩ typical) or HS I/O outputs with wake-up capability. |
| I/O-0 | Programmable I/O | Bi-directional pin usable as wake-up input, HS switch, or cyclic sense output in LP modes. |
| SAFE | Failsafe Alert Output | Open-drain active-low signal asserted on VDD undervoltage, watchdog timeout, RST fault, or CAN/LIN failure. |
| MUX-OUT | Analog Monitoring Output | Multiplexed analog output selectable via SPI; monitors VDD, VSUP, internal temp, or reference voltage. |
| INT / RST | Interrupt & Reset Control | INT signals enabled events (e.g., wake-up, fault); RST drives MCU reset with internal pull-up and external reset detection. |
Key Features
| Feature | Design Value |
|---|---|
| Dual LIN 2.1 Transceivers | Integrated LIN physical layer with programmable termination and bus diagnostics; eliminates need for discrete LIN transceivers. |
| Fail-Safe State Machine | Hardware-monitored safety logic that asserts SAFE on VDD drop, watchdog stall, RST pin fault, or CAN/LIN bus failure - independent of MCU firmware. |
| Multi-Source Wake-up | Supports wake-up from CAN frame, LIN header, I/O edge, SPI command, or internal timer - enabling flexible low-power ECU architectures. |
| Diagnostic MUX-OUT | Single-pin analog multiplexer for real-time monitoring of VDD, VSUP, die temperature, and internal references - reduces MCU ADC channel count. |
| Thermal & Overcurrent Protection | Embedded thermal shutdown and VDD overcurrent detection with automatic recovery; prevents latch-up during load dump or short-circuit events. |
Applications
| Automotive Body Control Module (BCM) | Engine Control Unit (ECU) Subsystem |
|---|---|
|
Use Scenario: Centralized power and communication management for door modules, lighting, and HVAC actuators in 12 V vehicle platforms. IC Role / Device Role / Timing Role: SBC provides regulated 5.0 V MCU supply, dual LIN for sensor/actuator networks, and CAN gateway functionality with fail-safe monitoring. Use Value: Reduces BOM count by integrating CAN transceiver, dual LIN drivers, and power regulation - while enabling diagnostic-rich sleep/wake behavior per UNECE R155 requirements. |
Use Scenario: Secondary control node managing throttle valve, fuel injectors, or cam phasers via LIN, with CAN backhaul to main ECU. IC Role / Device Role / Timing Role: Acts as intelligent power manager and LIN master with precise timing control for synchronized actuator commands (LIN 2.1 schedule tables). Use Value: Enables deterministic LIN scheduling and real-time fault reporting (via SAFE/INT) without MCU intervention - improving functional safety compliance (ASIL-B ready). |
| Industrial Vehicle Telematics Hub | Off-Highway Equipment Controller |
|
Use Scenario: Telematics gateway in construction or agricultural vehicles requiring CAN telemetry, LIN-peripheral control, and ultra-low-power sleep during idle periods. IC Role / Device Role / Timing Role: SBC manages power sequencing, monitors battery health via VSENSE/MUX-OUT, and wakes host processor only on valid CAN/LIN event - minimizing parasitic drain. Use Value: Achieves <10 µA quiescent current in LP VDD-off mode, extending battery life in GPS-tracked equipment operating weeks between charges. |
Use Scenario: Control unit for hydraulic valves or PTO systems in tractors and harvesters exposed to wide temperature swings and electrical transients. IC Role / Device Role / Timing Role: Provides ruggedized 5.0 V supply with −0.3 V to 40 V transient tolerance (load dump), dual LIN for implement sensors, and SAFE-driven system shutdown on overtemperature. Use Value: Survives ISO 7637-2 Pulse 5a/b transients and maintains operation at 125 °C ambient - eliminating need for external TVS or thermal derating circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar System Basis Chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCZ33903DS5EK/R2 | Single LIN 2.1 interface; same 5.0 V VDD, SOIC-32 (SOT1762-2), and LP performance. | Used where only one LIN bus is required (e.g., single-sensor cluster), reducing pin count and software complexity. | Select when dual-LIN capability is unnecessary - lowers cost and simplifies PCB routing without sacrificing power or safety features. |
| MC33904D5EK/R2 | No LIN interface; retains 5.0 V VDD, CAN, 4 wake-up inputs, and identical SOIC-32 (SOT1746-3) package. | Targeted at CAN-only nodes (e.g., inertial measurement units) needing minimal peripheral integration and maximum wake-up flexibility. | Choose when LIN is absent from system architecture - offers identical thermal performance and lower gate count than dual-LIN variants. |
Compared with MCZ33903DD5EK/R2, MCZ33903DS5EK/R2 removes one LIN interface but preserves full CAN, power, and safety functionality, while MC33904D5EK/R2 eliminates LIN entirely to serve pure CAN gateway roles - both retain the same 5.0 V output, -40 °C to 125 °C rating, and SOIC-32 footprint compatibility.
Availability
MCZ33903DD5EK/R2 is available at Aetrix Electronics and suitable for automotive body control modules, engine subsystems, industrial telematics hubs, and off-highway equipment controllers requiring stable component supply across extended temperature and high-reliability environments.
Supply support for MCZ33903DD5EK/R2 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 NXP's second-generation System Basis Chip platform designed specifically for automotive electronic control units requiring integrated CAN, scalable LIN, robust power regulation, and hardware-enforced functional safety - targeting ASIL-B compliance in distributed ECU architectures.
FAQ
What is the primary function of the MCZ33903DD5EK/R2 in an automotive ECU?
The MCZ33903DD5EK/R2 serves as a System Basis Chip (SBC) that integrates power management (5.0 V VDD regulator), high-speed CAN (ISO 11898-2/5), dual LIN 2.1 interfaces, fail-safe monitoring, and wake-up control into a single SOIC-32 device. In an automotive ECU, it replaces discrete regulators, transceivers, and supervision ICs - reducing board space and improving reliability. The MCZ33903DD5EK/R2 enables deterministic low-power operation and hardware-level fault response independent of MCU firmware.
Does the MCZ33903DD5EK/R2 support external PNP transistor augmentation for its VDD regulator?
No, the MCZ33903DD5EK/R2 does not support external PNP transistor augmentation for its VDD regulator. Per NXP's datasheet Table 3 note (2), "VDD does not allow usage of an external PNP on the 33903." This differs from earlier family members like MC33905, where external PNP extension was permitted. The MCZ33903DD5EK/R2's 5.0 V regulator is self-contained with built-in overcurrent and thermal protection - limiting maximum continuous load but ensuring predictable behavior in automotive environments.
How many wake-up sources does the MCZ33903DD5EK/R2 support, and what are they?
The MCZ33903DD5EK/R2 supports up to three dedicated wake-up capable pins (I/O-0, LIN-T1/I/O-2, LIN-T2/I/O-3), each configurable as input or high-side output. Additionally, it enables wake-up via CAN bus activity, LIN bus header detection, SPI message reception, internal timer expiration, and VDD overcurrent event. All wake-up sources operate in low-power (LP) modes, allowing the device to remain in sub-10 µA quiescent current until triggered - making the MCZ33903DD5EK/R2 ideal for always-on vehicle modules with strict battery drain limits.
What is the role of the SAFE pin on the MCZ33903DD5EK/R2, and how is it used?
The SAFE pin on the MCZ33903DD5EK/R2 is an open-drain, active-low output that signals critical system faults detected by the hardware fail-safe state machine - including VDD undervoltage, watchdog timeout, RST pin malfunction, CAN bus failure, or LIN bus error. It is electrically isolated from MCU control and asserts independently of firmware. In system design, SAFE typically drives an external reset controller or disables power stages to enforce safe shutdown. The MCZ33903DD5EK/R2's SAFE behavior is defined in hardware per ISO 26262 ASIL-B concepts, providing deterministic response without software dependency.
Is the MCZ33903DD5EK/R2 pin-compatible with other devices in the MC33903 family?
Yes, the MCZ33903DD5EK/R2 is footprint-compatible with other MC33903 variants - specifically MCZ33903DS5EK/R2 (single LIN), MCZ33903DP5EK/R2 (no LIN), and MCZ33903D3EK/R2 (3.3 V dual-LIN) - all using the SOIC-32 exposed pad package (SOT1762-2). This allows hardware reuse across different LIN configurations without PCB redesign. However, pin functions differ: e.g., LIN-T1/LIN-T2 on MCZ33903DD5EK/R2 map to I/O-2/I/O-3 on non-LIN variants, requiring firmware adaptation but no layout change.
MCZ33903DD5EKR2 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
MCZ33903DD5EKR2 FAQ
1.How can I place an order for MCZ33903DD5EKR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCZ33903DD5EKR2 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 MCZ33903DD5EKR2 reliable?
The price and inventory of MCZ33903DD5EKR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCZ33903DD5EKR2 is usually 5 days.
3.What payment methods are accepted for MCZ33903DD5EKR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCZ33903DD5EKR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCZ33903DD5EKR2?
MCZ33903DD5EKR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCZ33903DD5EKR2 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 MCZ33903DD5EKR2?
For technical support, including MCZ33903DD5EKR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCZ33903DD5EKR2 requirements.
6.How does Aetrix verify that MCZ33903DD5EKR2 is sourced from the original manufacturer or authorized distributors?
All MCZ33903DD5EKR2 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 MCZ33903DD5EKR2 meets industry standards.
7.What is the process for return or replacement of MCZ33903DD5EKR2?
All MCZ33903DD5EKR2 units undergo pre-shipment inspection (PSI). If there is an issue with MCZ33903DD5EKR2, 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 MCZ33903DD5EKR2 part is unused and in its original packaging.
Return procedure for MCZ33903DD5EKR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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