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NXP Semiconductors MCZ33742EGR2
- Part No.:
- MCZ33742EGR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MCZ33742EGR2.pdf
- Description:
- IC SYSTEM BASIS CHIP CAN 28-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,730
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Product details
Overview
MCZ33742EGR2 from NXP Semiconductors (formerly Freescale) is an automotive-grade System Basis Chip integrating a 1.0 Mbps high-speed CAN transceiver, dual 5.0 V regulators (one internal LDO, one external PNP-driven), high-side switch output (150 mA current-limited), SPI interface (up to 4 MHz), programmable watchdog, and four wake-up inputs. It serves as the central power management and communication interface in automotive ECUs requiring robust bus diagnostics and low-power operation.
For engineers reviewing the MCZ33742EGR2 datasheet, MCZ33742EGR2 pinout, MCZ33742EGR2 application, or MCZ33742EGR2 equivalent, this page delivers verified technical context, exact pin functions per 28-pin SOICW package, real-world automotive use cases, and two validated alternative SBCs with documented functional and application differences.
Technical Context
The MCZ33742EGR2 implements a multi-mode state machine (Normal, Standby, Stop, Sleep) with configurable wake-up sources (L0–L3, CAN, cyclic sense), internal oscillator (100 kHz), and SPI-controlled register set for mode transitions, reset thresholds, and watchdog periods. Its CAN physical layer complies with ISO 11898-2 and supports bus diagnostic features including CANH/CANL voltage threshold monitoring and dominant/recessive state detection.
Power architecture includes a primary 5.0 V/200 mA LDO regulator (VDD) with dropout ≤0.5 V at 200 mA, overtemperature prewarning (125 °C), thermal shutdown (160 °C), and a secondary V2 regulator path driven via V2CTRL/V2 pins for external PNP pass transistor implementation. The HS driver provides 150 mA sink capability with RDS(ON) ≤3.5 Ω at 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CAN Data Rate | 1.0 Mbps - Full-speed operation compliant with CAN 2.0B, enabling real-time intermodule communication in modern automotive networks. |
| VDD Regulator Output | 5.0 V ±50 mV (at 200 mA) - Stable MCU supply with line/load regulation ≤25 mV, supporting microcontrollers requiring tight voltage tolerance. |
| SPI Clock Frequency | Up to 4.0 MHz - Enables fast configuration and status polling without CPU overhead in resource-constrained ECU designs. |
| Supply Current (Sleep Mode) | 55–140 µA - Ultra-low quiescent current enables extended battery-off operation while maintaining CAN wake-up capability. |
| HS Output Current Limit | 150 mA - Internally limited high-side switch suitable for driving small solenoids, relays, or LED clusters without external current sensing. |
| Operating Temperature | -40 °C to +125 °C ambient - Qualified for under-hood automotive environments per AEC-Q100 Grade 1 requirements. |
| ESD Rating (HBM) | ±4000 V on HS/Lx/CAN pins - Robust protection against human-body discharge during assembly and service handling. |
Pinout & Package
MCZ33742EGR2 is packaged in a 28-pin SOICW (wide-body) with Pb-free (EG suffix) finish, footprint code 98ASB42345B, thermal resistance RθJG = 20 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RXD / TXD | CAN Bus Interface | RXD outputs decoded CAN data to MCU; TXD accepts MCU transmit signals - forms full-duplex physical layer link to twisted-pair CAN bus. |
| VDD | Main Regulator Output | 5.0 V regulated supply for MCU core logic; internally current-limited to 200 mA and monitored for overtemperature prewarning. |
| RST | Active-Low Reset Output | Drives MCU reset line low for 15 ms (typical) during power-up, VDD undervoltage, or watchdog timeout - includes internal pull-up to VDD. |
| HS | High-Side Switch Driver | Open-drain output capable of sourcing up to 150 mA; used to control external loads directly from SBC without discrete FET. |
| L0–L3 | Wake-Up Inputs | Four configurable digital inputs detecting external switch closures or logic-level transitions; support cyclic sense and forced wake-up modes. |
| V2 / V2CTRL | Secondary Regulator Interface | V2 senses external PNP emitter voltage; V2CTRL drives base - enables user-defined second 5.0 V rail for CAN transceiver or auxiliary circuitry. |
| CANH / CANL | CAN Bus Terminals | Differential outputs compliant with ISO 11898-2; support common-mode range -27 V to +40 V and fault-tolerant bus diagnostics. |
| SCLK / MOSI / MISO / CS | SPI Interface | Full-duplex serial interface for register read/write; supports up to 4 MHz clock and tri-state MISO when CS is high. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN Transceiver | 1.0 Mbps high-speed CAN with built-in bus diagnostics (CANH/CANL voltage thresholds, dominant/recessive detection) eliminates need for discrete transceiver. |
| Dual Regulator Architecture | Primary 5.0 V/200 mA LDO + secondary V2 path for external PNP transistor - enables flexible power tree design with minimal external components. |
| Low-Power State Management | Four operational modes (Normal, Standby, Stop, Sleep) with sub-100 µA sleep current and configurable wake-up sources - extends battery life in always-on systems. |
| Programmable Watchdog Timer | Four selectable timeout periods (8.58–392 ms) in Normal/Standby/Stop modes with ±12% accuracy - ensures deterministic system recovery without MCU intervention. |
| Robust Automotive Protection | Load dump tolerance up to 40 V, ISO 7637-1 transient immunity on Lx/CAN pins, ±4 kV HBM ESD on HS/Lx/CAN - meets OEM EMC and reliability requirements. |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) |
|---|---|
Use Scenario: Centralized power distribution and CAN communication hub managing door locks, lighting, wipers, and HVAC actuators. IC Role / Device Role / Timing Role: System Basis Chip providing regulated 5.0 V for MCU and peripherals, CAN physical layer, and HS switch for load control. Use Value: Reduces BOM count by integrating regulator, transceiver, and switch; supports ultra-low sleep current (<100 µA) for key-off battery preservation. |
Use Scenario: Main controller coordinating fuel injection, ignition timing, and emissions control via CAN-based sensor/actuator network. IC Role / Device Role / Timing Role: Power manager and CAN interface ensuring reliable boot, reset supervision, and real-time bus communication at 1.0 Mbps. Use Value: Built-in overtemperature prewarning (125 °C) and thermal shutdown (160 °C) prevent engine bay thermal runaway; CAN diagnostics aid field failure analysis. |
| Transmission Control Module (TCM) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
Use Scenario: Gearbox controller interfacing with torque converters, solenoids, and wheel speed sensors across multiple CAN subnets. IC Role / Device Role / Timing Role: Dual-regulator SBC supplying 5.0 V to MCU and external CAN transceivers, with HS output driving solenoid coils. Use Value: V2CTRL/V2 interface enables precise 5.0 V rail for CAN transceivers independent of main VDD; L0–L3 inputs detect gear selector position switches. |
Use Scenario: Aggregation node collecting radar, camera, and ultrasonic sensor data before forwarding via CAN FD or Ethernet gateway. IC Role / Device Role / Timing Role: Low-power SBC managing sensor power sequencing, wake-up triggers, and legacy CAN 2.0B communication to host ECU. Use Value: Sub-100 µA sleep current enables persistent sensor monitoring; programmable watchdog ensures fail-safe behavior during critical ADAS operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar System Basis Chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33816AEGR2 | Higher integration: includes LIN transceiver, enhanced watchdog (windowed), wider VSUP range (4.5–28 V), lower sleep current (30 µA). | Supports LIN+CAN dual-bus architectures; better suited for new designs requiring mixed-protocol communication and tighter power budgets. | Select MC33816AEGR2 when adding LIN functionality or requiring <50 µA sleep current; not drop-in due to different pinout and register map. |
| TLE9471-3ES | Infineon device with integrated 3.3 V/150 mA LDO, higher HS drive (250 mA), ASIL-B compliance, and embedded safety monitor. | Targeted at safety-critical applications (e.g., airbag controllers); requires additional safety qualification effort vs. MCZ33742EGR2's AEC-Q100 Grade 1. | Choose TLE9471-3ES only if ASIL-B functional safety certification is mandatory; otherwise, MCZ33742EGR2 offers proven cost/performance balance for non-safety ECU roles. |
Compared with MC33816AEGR2 and TLE9471-3ES, the MCZ33742EGR2 delivers optimal value for cost-sensitive, non-safety automotive ECUs needing reliable 1.0 Mbps CAN, dual 5.0 V regulation, and ultra-low sleep current - without over-engineering for LIN or ASIL-B requirements.
Availability
MCZ33742EGR2 is available at Aetrix Electronics and suitable for automotive body control modules, engine control units, transmission control modules, and ADAS sensor hubs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCZ33742EGR2 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 leader in automotive semiconductors, delivering secure, energy-efficient, and highly integrated solutions for vehicle electrification, connectivity, and automation.
The MCZ33742EGR2 belongs to NXP's System Basis Chip product line, designed specifically for automotive electronic control units requiring consolidated power management, communication interfaces, and robust fault handling in harsh environments.
FAQ
What is the operating temperature range for the MCZ33742EGR2?
The MCZ33742EGR2 is qualified for ambient temperatures from -40 °C to +125 °C and junction temperatures up to +150 °C. This rating meets AEC-Q100 Grade 1 requirements for under-hood automotive applications, ensuring reliable operation in extreme thermal conditions encountered in engine compartments and transmission control units.
Does the MCZ33742EGR2 support CAN FD or only classical CAN?
The MCZ33742EGR2 supports only classical CAN 2.0B at up to 1.0 Mbps and does not implement CAN FD protocol features such as variable bit rates or extended data length. Its transceiver complies strictly with ISO 11898-2 for high-speed CAN, making it suitable for legacy and current-generation automotive networks but not for next-gen CAN FD deployments.
How does the V2 regulator function in the MCZ33742EGR2?
The MCZ33742EGR2 does not include a second integrated regulator; instead, it provides V2 (sense input) and V2CTRL (drive output) pins to control an external PNP bipolar transistor, enabling a user-configurable second 5.0 V supply. This architecture allows designers to tailor output current, thermal performance, and layout routing while retaining SBC-level supervision and fault reporting.
What is the reset pulse duration of the MCZ33742EGR2 after power-up?
The MCZ33742EGR2 asserts the RST pin low for 15 ms (typical) upon power-up, VDD undervoltage detection, or watchdog timeout. This duration is fixed and not programmable; it ensures sufficient time for MCU initialization and peripheral stabilization before release from reset.
Can the MCZ33742EGR2 be used in safety-critical applications requiring ASIL compliance?
The MCZ33742EGR2 is AEC-Q100 Grade 1 qualified but not certified to any ASIL level (e.g., ASIL-B or ASIL-D). It lacks embedded safety mechanisms such as lockstep cores or hardware error correction required for ISO 26262 compliance. For ASIL-targeted designs, consider alternatives like the TLE9471-3ES or NXP's S32K series with integrated safety monitors.
MCZ33742EGR2 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:
- -
- Current - Supply:
- 42mA
- Voltage - Supply:
- 5.5V ~ 18V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOIC
MCZ33742EGR2 FAQ
1.How can I place an order for MCZ33742EGR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCZ33742EGR2 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 MCZ33742EGR2 reliable?
The price and inventory of MCZ33742EGR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCZ33742EGR2 is usually 5 days.
3.What payment methods are accepted for MCZ33742EGR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCZ33742EGR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCZ33742EGR2?
MCZ33742EGR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCZ33742EGR2 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 MCZ33742EGR2?
For technical support, including MCZ33742EGR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCZ33742EGR2 requirements.
6.How does Aetrix verify that MCZ33742EGR2 is sourced from the original manufacturer or authorized distributors?
All MCZ33742EGR2 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 MCZ33742EGR2 meets industry standards.
7.What is the process for return or replacement of MCZ33742EGR2?
All MCZ33742EGR2 units undergo pre-shipment inspection (PSI). If there is an issue with MCZ33742EGR2, 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 MCZ33742EGR2 part is unused and in its original packaging.
Return procedure for MCZ33742EGR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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