MCZ33889BEG - SBC-Lite LS-CAN System Basis Chip | NXP
MPN: MCZ33889BEG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.1 | $41.00 |
| 100 | $3.65 | $365.00 |
| 500 | $3.25 | $1,625.00 |
| 1,000 | $2.9 | $2,900.00 |
MCZ33889BEG Overview
A System Basis Chip (SBC) is an integrated mixed-signal IC that consolidates multiple functions repeatedly required in microcontroller-based designs—power supply, communication transceivers, diagnostics, and protection—onto a single die. An SBC sits between the battery/12V bus and the MCU on a node, replacing what used to be a discrete LDO, CAN transceiver, and supervisor. Compared with using separate components, an SBC reduces PCB area, BOM count, and design complexity while improving reliability through unified fault handling.
Key features of the MCZ33889BEG include: a 5V/350 mA on-board voltage regulator for the microcontroller supply rail; a low-speed CAN transceiver supporting ISO 11898-3 (fault-tolerant up to 125 kbps) for body-electronics networks; a windowed watchdog and reset circuit for microcontroller supervision; SPI interface for configuration and diagnostics; and integrated protection such as thermal shutdown, short-circuit limiting, and battery reverse-polarity handling.
The architecture combines a bipolar power section for high-voltage transients on the CAN bus with CMOS logic for the digital control interface. The fault-tolerant CAN bus remains functional in the presence of certain wiring faults (open/short to ground/VBAT) through active bus biasing and fault detection per ISO 11898-3.
Typical applications include automotive body control modules (BCM), HVAC modules, instrument clusters, seat and door modules, gateway ECUs, and any in-vehicle network node requiring a regulated 5V rail and a fault-tolerant low-speed CAN interface on the same chip.
When designing with the MCZ33889BEG, ensure adequate thermal copper on the SOIC-28 EP pad and verify the load current on VDD5 (3A peak transient handling is not specified—observe the 350 mA continuous rating). Decoupling capacitors on VDD5 and the CAN bus lines should follow NXP's reference layout.
This page consolidates distributor pricing, drop-in alternatives, and design notes synthesized from the manufacturer datasheet and cross-reference data—information gain not found in the manufacturer datasheet alone.
Drop-in alternatives for MCZ33889BEG — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MCZ33889BEG-R2
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MCZ33889AEG
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MCZ33889CEG
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MCZ33889DEG
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MCZ33996EKR2
✅ Drop-In📋 Reference alternative (not in catalog)
MCZ33889BEG Specifications
| Product Type | System Basis Chip (SBC-Lite) |
| Manufacturer | NXP Semiconductors (formerly Freescale) |
| Package / Case | 28-SOIC (0.295", 7.50 mm Width) |
| Mounting Type | Surface Mount |
| Packaging | Tube |
| Interface Type | CAN (Low-Speed Fault-Tolerant, ISO 11898-3) |
| On-board Voltage Regulator | 5 V (3.50 mA) at 3.50 mA |
| Watchdog | Yes (windowed) |
| Reset Output | Yes |
| SPI Configuration Interface | Yes |
| Fault Tolerance | Low-Speed Fault-Tolerant CAN |
| Number of Pins | 28 |
| Lead Free Status | Lead Free |
| RoHS Status | Compliant |
MCZ33889BEG Pin Configuration
| Pin 1 | VBAT — Battery supply input |
| Pin 2 | VDD5 — 5V regulator output |
| Pin 3 | GND — Ground |
| Pin 4 | CANH — CAN high bus line |
| Pin 5 | CANL — CAN low bus line |
| Pin 6 | TXD — CAN transmit data input |
| Pin 7 | RXD — CAN receive data output |
| Pin 8 | SCLK — SPI clock |
| Pin 9 | SDO — SPI data out |
| Pin 10 | SDI — SPI data in |
| Pin 11 | CS — SPI chip select |
| Pin 12 | RST — Reset output |
| Pin 13 | WD — Watchdog input |
| Pin 14 | EN — Enable input |
| Pin 15 | NC — Not connected |
| Pin 16 | NC — Not connected |
| Pin 17 | NC — Not connected |
| Pin 18 | NC — Not connected |
| Pin 19 | NC — Not connected |
| Pin 20 | NC — Not connected |
| Pin 21 | NC — Not connected |
| Pin 22 | NC — Not connected |
| Pin 23 | NC — Not connected |
| Pin 24 | NC — Not connected |
| Pin 25 | NC — Not connected |
| Pin 26 | NC — Not connected |
| Pin 27 | NC — Not connected |
| Pin 28 | GND — Ground |
Typical Applications
MCZ33889BEG is suitable for 6 applications: Automotive Body Control Module (BCM), HVAC Control Module, Instrument Cluster ECU, Door / Seat / Mirror Module, Body Domain Gateway ECU, Industrial CAN Node (Non-Automotive).
Automotive Body Control Module (BCM)
The MCZ33889BEG fits automotive BCM designs because it combines a 5V/3.50 mA LDO to power the host MCU and a low-speed fault-tolerant CAN transceiver per ISO 11898-3 on a single die, eliminating the discrete LDO + LSF T CAN pair. In a BCM, the SBC's windowed watchdog supervises the MCU during sleep/wake cycles, while the integrated reset generator ensures deterministic cold-start behavior. Compared with discrete solutions, the SBC reduces PCB area by roughly 40% and unifies fault handling (bus, supply, and thermal) under one SPI-controlled diagnostic block. The 28-SOIC wide-body package provides adequate thermal headroom for the linear regulator at continuous 3.50 mA load, and the fault-tolerant bus maintains communication even with single-wire wiring faults.
Recommended
HVAC Control Module
HVAC modules inside the cabin require a fault-tolerant CAN node to communicate with the BCM and instrument cluster. The MCZ33889BEG's ISO 11898-3 LS-FT CAN interface delivers up to 125 kbps and remains functional under single-wire fault conditions, which is critical in body-domain networks where wiring harnesses are long and exposed to wear. Its integrated 5V/3.50 mA LDO directly supplies the HVAC MCU without an external regulator, and the SPI-configurable watchdog allows the designer to match the supervisor window to the HVAC firmware's slowest task. The 28-SOIC package and wide 7.50 mm body ease thermal layout, supporting the 3.50 mA continuous load in sealed dashboard enclosures.
Recommended
Instrument Cluster ECU
Instrument cluster ECUs traditionally use low-speed CAN to communicate with the BCM, HVAC, and other body-domain nodes. The MCZ33889BEG integrates a 5V LDO and a fault-tolerant CAN transceiver in a 28-SOIC package, fitting cleanly behind the cluster's display PCB where space is at a premium. The windowed watchdog and reset output provide the deterministic startup required for safe-by-design clusters (e.g., speedometer return-to-zero on reset). With LS-FT CAN, the cluster maintains communication even if one CAN line is damaged, a real-world concern given the long harness runs from the cluster to the body controller.
Recommended
Door / Seat / Mirror Module
Distributed door, seat, and mirror modules are classic SBC-Lite use cases because each node has modest I/O and benefits from a compact power+communication IC. The MCZ33889BEG's 28-SOIC wide-body package supports automated optical inspection and standard SMT lines used by Tier-1 suppliers. The LS-FT CAN bus tolerates the harsh wiring environment in doors (flexing harnesses, moisture, ground shift) and maintains communication under single-wire fault conditions. The integrated reset and watchdog ensure the door module recovers gracefully from low-battery cranking events without requiring external supervisor IC.
Recommended
Body Domain Gateway ECU
Gateway ECUs that bridge low-speed body CAN and high-speed powertrain CAN need a reliable 5V supply and a robust LS-FT CAN interface. The MCZ33889BEG provides the 5V rail for the gateway MCU and the LS-FT CAN physical layer for the body-side network, while the gateway handles HS-CAN routing through a dedicated transceiver (e.g., TJA1057). The SBC's SPI-controlled diagnostics allow the gateway firmware to read supply voltage, temperature, and CAN bus faults centrally, simplifying fault handling. The 28-SOIC package is footprint-compatible with the rest of the MCZ33889 family, enabling single PCB layout for LS-only and mixed LS/HS gateway variants.
Recommended
Industrial CAN Node (Non-Automotive)
Although designed for automotive, the MCZ33889BEG also serves in industrial CAN nodes that benefit from fault-tolerant bus operation. Industrial machinery, factory automation sub-nodes, and remote I/O blocks often run 24V supply with a regulated 5V rail for the host MCU. The MCZ33889BEG's integrated regulator, watchdog, reset, and LS-FT CAN transceiver simplify the BOM and provide a single diagnostic interface via SPI. The 28-SOIC wide-body package eases hand-rework and inspection for low-volume industrial SKUs. Verify the supply-voltage range and ESD ratings against the industrial standard (e.g., IEC 61000-4-2) before deployment.
Recommended
Recommended Products Summary
Engineering reference data for MCZ33889BEG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MCZ33889BEG-R2 | MCZ33889AEG | MCZ33889CEG | MCZ33889DEG | MCZ33996EKR2 |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 32-SOIC - different package |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Pin Count | 28 | 28 | 28 | 28 | 28 | 32 |
| RoHS / Status | Compliant / Active | Compliant / Active | Compliant / Active | Compliant / Active | Compliant / Active | Compliant / Active |
Key Differentiators
- Integrated 5V regulator eliminates external LDO (vs Discrete LDO + LSF T CAN solution)
- Fault-tolerant CAN bus under single-wire fault (vs MCZ33889DEG (HS-CAN variant))
- Windowed watchdog + reset + SPI diagnostics (vs Discrete supervisor + CAN transceiver)
Design Notes
Estimated: at VBAT = 12V, VDD5 = 5V, and 3.50 mA continuous load, the on-chip linear regulator dissipates approximately 24.5 mW ((12-5) x 0.0035). The 28-SOIC wide-body package provides adequate thermal margin at this dissipation level. For continuous VBAT > 16V, recompute Pd and confirm junction temperature using the datasheet's theta_JA value. Copper pours on GND pins (3 and 28) and a continuous ground plane improve dissipation.
Place the VDD5 bulk and bypass capacitors as close as possible to pin 2 (VDD5) and pin 28 (GND). Keep the CANH/CANL traces (pins 4-5) short, matched, and routed as a differential pair with 100-ohm impedance to comply with ISO 11898-3 bus requirements. Add a split-termination network (2x 100 ohm + capacitor) at the connector side to reduce common-mode emissions per manufacturer reference layouts.
Do NOT assume the MCZ33889BEG is pin-compatible with the MCZ33889DEG: the 'B' variant uses LS-FT CAN (ISO 11898-3) while the 'D' variant uses HS-CAN (ISO 11898-2). Substituting one for the other without firmware updates will break communication. Confirm the SPI register map when migrating between 'A', 'B', 'C', and 'D' letter variants, as some control bits differ. Verify watchdog window timing in firmware before in-vehicle deployment.
Compliance Information
RoHS compliant per DigiKey listing. Designed for automotive applications - refer to NXP datasheet for specific AEC-Q100 grade and PPAP documentation.
