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NXP Semiconductors MC33889BDWR2
- Part No.:
- MC33889BDWR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MC33889BDWR2.pdf
- Description:
- IC INTERFACE SPECIALIZED 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,271
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Product details
Overview
MC33889BDWR2 from NXP Semiconductors is a system basis chip (SBC) integrating a 5.0 V/200 mA LDO regulator, low-speed fault-tolerant CAN transceiver (125 kbps), dual-mode high-side switch (HS1), programmable watchdog, SPI interface, and four operational modes (Normal, Standby, Stop, Sleep). It delivers power management, communication, and wake-up control for automotive body electronics and microcontroller-based modules.
For engineers reviewing the MC33889BDWR2 datasheet, MC33889BDWR2 pinout, MC33889BDWR2 application, or MC33889BDWR2 equivalent, key selection considerations include its 125 kbps fault-tolerant CAN compliance (ISO 11898-3), VDD1/V2 dual-regulator architecture with external PNP tracking, HS1 150 mA drive capability, and -40°C to +125°C operation in 28-pin SOICW package.
Technical Context
The MC33889BDWR2 implements a SMARTMOS-based SBC architecture with integrated CAN physical layer compliant with CAN 2.0A/B and ISO 11898-3. Its internal oscillator supports 100 kHz operation across all modes except Sleep/Stop, where it switches to low-power 100 kHz mode. The device features two independent voltage regulators: VDD1 (5.0 V ±2%, 200 mA) for MCU supply and V2 (tracking regulator, 1.0×VDD1) controlled via V2CTRL for peripheral rail generation using an external PNP transistor.
Wake-up logic includes dual level inputs (L0/L1), CAN bus dominant-edge detection (CANH/CANL), and CS-driven SPI wake. Fault tolerance is enforced through differential receiver thresholds (VDIFF1 = −3.2 V min for MC33889B), short-circuit-to-battery detection on CANH (VcanH = VSUP/2 + 5 V), and thermal prewarning (TPW = 130–160°C) preceding shutdown (TSD = 160–190°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CAN Data Rate | 125 kbps - fully compliant with ISO 11898-3 fault-tolerant CAN for automotive body networks. |
| VDD1 Output | 5.0 V ±2%, 200 mA - powers MCU core; drop voltage ≤0.2 V at 50 mA enables stable operation under load dump (40 V transient). |
| V2 Regulator | Tracking output (1.0×VDD1), externally controlled via V2CTRL - enables flexible peripheral rail design using external PNP ballast transistor. |
| HS1 Switch | 150 mA rated output, RDSON ≤2.5 Ω @ 25°C - drives pull-up resistors, relays, or small solenoids without external FET. |
| Operating Modes | Normal, Standby, Stop, Sleep - Sleep mode draws only 55–90 μA (oscillator off), enabling ultra-low-power ECU standby. |
| SPI Interface | Up to 4 MHz clock, t2SPI ≥25 μs (MC33889D only) - supports real-time register access and configuration during active or wake-up states. |
| Thermal Protection | Overtemperature prewarning (TPW) at 130–160°C, shutdown (TSD) at 160–190°C - provides fail-safe margin before thermal failure. |
Pinout & Package
MC33889BDWR2 is housed in a 28-pin SOICW (wide-body) package with exposed thermal pad, optimized for automotive PCB layouts requiring thermal reliability and EMI robustness. Pin assignments follow NXP's standardized SBC layout for signal grouping and ground isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RX / TX | CAN data interface | RX outputs decoded CAN bus data to MCU; TX accepts MCU transmit commands - enables full-duplex fault-tolerant CAN communication. |
| VDD1 / V2 | Regulated power outputs | VDD1 supplies MCU core at 5.0 V; V2 provides tracked peripheral rail - both support current limiting and thermal monitoring. |
| HS1 | High-side driver output | Switches 150 mA load between VSUP and external device - eliminates need for discrete high-side FET in door module or lighting control. |
| L0 / L1 | Wake-up input sensors | Detect external switch closures or logic-level transitions - configurable hysteresis (0.6–1.3 V) prevents false wake from noise. |
| RTH / RTL | CAN bus termination control | Drive external 120 Ω termination resistors to CANH/CANL - ensures proper bus impedance matching and fault recovery. |
| MOSI / MISO / SCLK / CS | SPI serial interface | Enable bidirectional register read/write for mode control, watchdog setup, and status monitoring - critical for dynamic power-state management. |
Key Features
| Feature | Design Value |
|---|---|
| Fault-tolerant CAN transceiver | Meets ISO 11898-3 with VDIFF1 = −3.2 V min (MC33889B), enabling reliable communication on degraded buses (open-wire, short-to-battery). |
| Dual regulated outputs (VDD1 + V2) | VDD1 powers MCU; V2 tracks VDD1 and drives external PNP - allows independent peripheral rail tuning without second IC. |
| Programmable watchdog timer | Four selectable periods (9.75 ms to 350 ms) in Normal/Standby and Stop modes - supports diverse firmware safety requirements across ECU states. |
| Low-power Stop/Sleep modes | ISUP(SLEEP2) = 55–90 μA (oscillator off); ISUP(STOP2) = 80–110 μA - extends battery life in always-on vehicle modules. |
| Integrated HS1 high-side switch | 150 mA drive, RDSON ≤2.5 Ω @ 25°C, VCL = −0.3 V - directly controls small loads while providing overcurrent and thermal protection. |
Applications
| Body Control Module (BCM) | Door Module |
|---|---|
Use Scenario: Centralized control of interior lighting, window lifts, mirror adjustment, and door lock actuators in modern vehicles. IC Role / Device Role / Timing Role: MC33889BDWR2 serves as primary power manager and CAN node controller - regulating MCU/peripheral rails, driving local loads via HS1, and communicating status over fault-tolerant CAN. Use Value: Eliminates discrete LDOs, CAN transceivers, and high-side switches - reduces BOM count by ≥3 components and simplifies thermal design. | Use Scenario: Distributed control unit inside vehicle door housing window motor, lock solenoid, and anti-pinch sensor interface. IC Role / Device Role / Timing Role: MC33889BDWR2 provides isolated 5.0 V MCU supply, drives window motor enable via HS1, and reports faults over CAN bus during sleep/wake cycles. Use Value: Enables <100 μA sleep current and fast wake (<90 μs CS-triggered), meeting OEM requirements for zero-power standby and responsive actuation. |
| Seat Control Unit | Roof Module |
Use Scenario: Motorized seat position memory, heating, and lumbar support controlled via LIN/CAN gateway. IC Role / Device Role / Timing Role: MC33889BDWR2 supplies MCU and motor drivers, monitors seat switch inputs (L0/L1), and communicates diagnostics over CAN - operating across −40°C to +125°C. Use Value: Integrated thermal prewarning (TPW) and shutdown (TSD) protect against motor stall-induced overheating without external sensors. | Use Scenario: Sunroof, panoramic roof, or ambient lighting control with wake-on-CAN and low-quiescent-current operation. IC Role / Device Role / Timing Role: MC33889BDWR2 manages 5.0 V MCU rail, drives LED strings via HS1, and detects sunroof position switches on L0/L1 - entering Sleep mode when inactive. Use Value: Dual-regulator architecture allows independent optimization: VDD1 for MCU stability, V2 for LED current regulation via external PNP. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar system basis chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33883DG | Single 5.0 V regulator (no V2 tracking), no HS1 switch, lower CAN speed (83.3 kbps), 20-pin SOIC | Lacks peripheral rail flexibility and load-driving capability - suitable only for simpler nodes without local actuation. | Select MC33883DG only if cost reduction outweighs loss of V2/HS1 functionality and CAN bandwidth. |
| TCAN1042DR | Standalone fault-tolerant CAN transceiver (no regulators, no watchdog, no SPI), 8-pin SOIC | Requires external LDO, MCU reset circuitry, and power sequencing - increases design complexity and component count. | Choose TCAN1042DR only when existing power architecture already provides regulated rails and supervision logic. |
Compared with MC33889BDWR2, MC33883DG omits V2 tracking and HS1 drive - limiting peripheral integration - while TCAN1042DR adds design overhead by requiring external power and control circuitry, making MC33889BDWR2 the optimal choice for compact, self-contained automotive SBC designs.
Availability
MC33889BDWR2 is available at Aetrix Electronics and suitable for automotive body electronics, door modules, seat control units, and roof modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MC33889BDWR2 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 automotive, industrial, and IoT solutions, with deep expertise in automotive-grade mixed-signal ICs and functional safety architectures.
The MC33889 series belongs to NXP's System Basis Chip product line, designed specifically for automotive electronic control units requiring integrated power management, fault-tolerant communication, and intelligent wake-up capabilities in harsh environments.
FAQ
What is the maximum CAN bus data rate supported by the MC33889BDWR2?
The MC33889BDWR2 supports a maximum CAN data rate of 125 kbps and is fully compliant with ISO 11898-3 for low-speed fault-tolerant CAN. This rate is fixed and not programmable - it is optimized for robust communication in automotive body networks where cable length, noise immunity, and fault resilience are prioritized over speed.
Does the MC33889BDWR2 include built-in overtemperature protection?
Yes, the MC33889BDWR2 includes dual-stage thermal protection: overtemperature prewarning (TPW) activates at 130–160°C (setting VDDTEMP bit), followed by thermal shutdown (TSD) at 160–190°C. Both thresholds are guaranteed by design and operate independently of MCU supervision - ensuring fail-safe behavior even during software lockup.
How does the V2 regulator in the MC33889BDWR2 differ from VDD1?
The V2 regulator in the MC33889BDWR2 is a tracking regulator whose output follows VDD1 (1.0×VDD1, ±1% typical), controlled via the V2CTRL pin to drive an external PNP transistor. Unlike VDD1 - a monolithic 5.0 V/200 mA LDO - V2 enables customizable peripheral rail voltage and current scaling, supporting higher-current or different-voltage loads without adding a second regulator IC.
Can the MC33889BDWR2 wake up from Sleep mode using CAN bus activity?
Yes, the MC33889BDWR2 can wake from Sleep mode via dominant-edge detection on CANH or CANL. The wake-up threshold is VWAKE,H = 1.2–2.7 V on CANH and VWAKE,L = 2.5–3.9 V on CANL, with hysteresis of 0.2 V. Minimum dominant time required is 8–30 μs depending on variant - verified per ISO 11898-3 test conditions.
What is the purpose of the RTH and RTL pins on the MC33889BDWR2?
The RTH and RTL pins on the MC33889BDWR2 are dedicated outputs for connecting external 120 Ω termination resistors to CANH and CANL, respectively. They ensure precise bus impedance matching and support fault recovery mechanisms - including open-wire detection and automatic termination activation during TermVbat mode - critical for maintaining CAN network integrity in automotive environments.
MC33889BDWR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- CAN
- Voltage - Supply:
- 5.5V ~ 18V
- Supplier Device Package:
- 28-SOIC
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
MC33889BDWR2 FAQ
1.How can I place an order for MC33889BDWR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33889BDWR2 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 MC33889BDWR2 reliable?
The price and inventory of MC33889BDWR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33889BDWR2 is usually 5 days.
3.What payment methods are accepted for MC33889BDWR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33889BDWR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33889BDWR2?
MC33889BDWR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33889BDWR2 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 MC33889BDWR2?
For technical support, including MC33889BDWR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33889BDWR2 requirements.
6.How does Aetrix verify that MC33889BDWR2 is sourced from the original manufacturer or authorized distributors?
All MC33889BDWR2 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 MC33889BDWR2 meets industry standards.
7.What is the process for return or replacement of MC33889BDWR2?
All MC33889BDWR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33889BDWR2, 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 MC33889BDWR2 part is unused and in its original packaging.
Return procedure for MC33889BDWR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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