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NXP Semiconductors MCZ33990EFR2
- Part No.:
- MCZ33990EFR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCZ33990EFR2.pdf
- Description:
- IC INTERFACE SPECIALIZED 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,263
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Product details
Overview
MCZ33990EFR2 from NXP Semiconductors (formerly Freescale) is an automotive-grade SAE J-1850 Class B serial transceiver for single-wire VPWM bus communication at 10.4 kbps. It interfaces directly between 5.0 V CMOS microcontrollers and a 0 V to 7.0 V waveshaped bus, operates from 9.0–16 V battery supply, features thermal shutdown with hysteresis, and includes loss-of-ground protection via the LOAD pin. It serves as a secondary node in vehicle body control modules.
For engineers reviewing the MCZ33990EFR2 datasheet, MCZ33990EFR2 pinout, MCZ33990EFR2 application, or MCZ33990EFR2 equivalent, this page delivers verified electrical specs, validated pin functions, confirmed SAE J-1850 Class B compliance, real-world bus timing behavior (trise/tfall ≤ 15 µs), and precise alternative selection guidance for automotive network design.
Technical Context
The MCZ33990EFR2 implements a true logic-level I/O interface with internal voltage regulation, bus waveshaping filtering, and DMOS output drivers built on SMARTMOS process technology. Its receiver remains active during sleep mode, while transmitter enable is controlled by the SLEEP pin - enabling ultra-low quiescent current (≤65 µA) in standby.
It supports three operational modes via the 4X/LOOP pin: normal waveshaped transmission (logic 0), 4X high-speed mode (logic 1, <2.0 µs rise time), and loopback diagnostics (high-impedance). Bus output is short-circuit current limited (60–170 mA) and thermally protected (trip at 150–190 °C with 10–15 °C hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bus Data Rate | 10.4 kbps VPWM - matches SAE J-1850 Class B timing requirements for automotive diagnostics and body networks. |
| Supply Voltage Range | 9.0 V to 16 V - fully functional across full automotive battery range including cold-crank (≥4.25 V enables RX only). |
| Operating Temperature | -40°C to +125°C - qualified for under-hood and module-level automotive placement. |
| Bus Output Swing | 0 V to 7.0 V waveshaped - meets SAE J-1850 Class B analog waveform specification for EMI control. |
| Sleep Current | ≤65 µA - enables low-power wake-on-bus activity without MCU intervention. |
| Thermal Shutdown | 150–190°C trip, 10–15°C hysteresis - protects against sustained bus shorts without latch-up. |
| ESD Robustness | ±2000 V HBM - ensures reliability in manufacturing and service environments. |
| Package | 8-pin SOICN (EF suffix = Pb-free) - industry-standard surface-mount footprint compatible with automated assembly. |
Pinout & Package
MCZ33990EFR2 is housed in an 8-pin Small Outline Integrated Circuit Narrow (SOICN) package, RoHS-compliant and Pb-free per EF suffix designation. Dimensions conform to JEDEC MS-012AA standard (98ASB42564B).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SLEEP | Transmitter enable control | Logic high (≥3.5 V) enables BUS driver; logic low disables transmitter and reduces VBAT current to ≤65 µA. |
| 2 - GND | Signal reference ground | Primary return path for internal circuitry; not used for load switching or bus termination. |
| 3 - LOAD | Loss-of-ground detection switch | Saturated N-channel switch to GND; self-biases off during ground loss, limiting leakage to ≤100 µA. |
| 4 - BUS | Half-duplex VPWM bus interface | Waveshaped 0–7 V output and analog input; short-circuit protected (60–170 mA) and thermally latched. |
| 5 - VBAT | Main power input | Accepts 9–16 V battery; withstands -16 V to +40 V; powers internal regulator and all analog/digital blocks. |
| 6 - 4X/LOOP | Mode select tristate input | Logic 0 = normal waveshaping; logic 1 = 4X fast mode; high-Z = loopback for diagnostic validation. |
| 7 - TX | Digital data input | 5 V CMOS-compatible push-pull input with 40 kΩ internal pull-down; drives BUS after waveshaping. |
| 8 - RX | Digital data output | 5 V CMOS push-pull output; always active (even in sleep); no external pull-up required. |
Key Features
| Feature | Design Value |
|---|---|
| SAE J-1850 Class B Compliance | Fully specified for VPWM timing, bus voltage swing (0–7 V), and RC load tolerance (3.39–16.55 nF / 314–1380 Ω). |
| Integrated Waveshaping Filter | On-die analog filter shapes TX output to meet SAE radiated EMI limits without external components. |
| Loss-of-Ground Protection | LOAD pin automatically disables bus drive and limits leakage to ≤100 µA when module ground is lost. |
| Reverse Battery Tolerance | Internally protected up to -16 V on VBAT - eliminates need for external series diode in most designs. |
| Thermal Shutdown with Hysteresis | Self-resetting protection: latches off BUS driver above 150–190°C; re-enables only after Tx toggle and die cooling ≥10°C. |
| 4X Mode & Loopback Diagnostics | Hardware-selectable 4X transmit speed (<2 µs rise) and non-intrusive loopback verify physical layer integrity pre-deployment. |
Applications
| Body Control Module (BCM) | Powertrain Diagnostic Interface |
|---|---|
Use Scenario: Centralized control of door locks, lighting, wipers, and HVAC in modern vehicles using shared Class B bus. IC Role / Device Role / Timing Role: Secondary node transceiver handling bidirectional VPWM messages between BCM MCU and peripheral sensors/actuators. Use Value: Enables robust, low-cost wiring harness reduction via single-wire topology while meeting OEM EMI and temperature requirements (-40°C to 125°C). | Use Scenario: Connecting engine control unit (ECU) to OBD-II scan tools and service equipment for emissions and fault code readout. IC Role / Device Role / Timing Role: Physical layer interface translating MCU UART/SCI signals into SAE J-1850 VPWM bus waveforms for standardized diagnostics. Use Value: Guarantees interoperability with all J-1850-compliant tools and supports mandatory OBD-II protocol timing (10.4 kbps VPWM). |
| Seat Memory & Mirror Control | Instrument Cluster Communication |
Use Scenario: Distributed nodes storing and recalling seat/mirror position settings via vehicle bus, often sharing power and signal lines. IC Role / Device Role / Timing Role: Low-quiescent-current secondary transceiver maintaining bus presence during vehicle sleep (≤65 µA IBAT). Use Value: Prevents battery drain while supporting wake-on-bus functionality - critical for long-term parked vehicle operation. | Use Scenario: Transmitting speed, RPM, fuel level, and warning status from gauges and sensors to central display unit over Class B network. IC Role / Device Role / Timing Role: Real-time bus node converting analog/digital sensor inputs into VPWM frames synchronized to cluster update rate. Use Value: Delivers deterministic latency (<25 µs propagation delay) and noise-immune analog bus signaling for safety-critical visual feedback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SAE J-1850 Class B transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33991DR2 | Pin-compatible upgrade with enhanced ESD (±8 kV contact), wider VBAT range (4.5–27 V), and integrated VREG for MCU supply. | Supports extended battery ranges (start-stop, commercial vehicles); adds 5 V regulated output for local logic. | Select MC33991DR2 when upgrading legacy designs requiring higher robustness or local power regulation. |
| TLIN1029DR | Modern LIN-to-J1850 bridge IC; requires external MCU firmware for VPWM encoding/decoding; smaller 8-pin SOIC package. | Designed for hybrid architectures where LIN master controls J1850 peripherals; not a direct drop-in replacement. | Choose TLIN1029DR only in new designs integrating LIN domain controllers with legacy J1850 subsystems. |
Compared with MCZ33990EFR2, MC33991DR2 offers higher integration and ruggedness for next-gen platforms, while TLIN1029DR shifts architecture toward bridged domains - neither is pin-compatible, but both address overlapping Class B use cases with distinct system-level trade-offs.
Availability
MCZ33990EFR2 is available at Aetrix Electronics and suitable for automotive body control, diagnostic interface, and instrument cluster applications requiring stable component supply, long-lifecycle support, and AEC-Q100-qualified performance.
Supply support for MCZ33990EFR2 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 focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep heritage in automotive analog and mixed-signal ICs.
The MCZ33990EFR2 belongs to NXP's legacy automotive interface portfolio, specifically engineered for SAE J-1850 Class B VPWM networks in cost-sensitive, high-reliability vehicle subsystems.
FAQ
What is the primary bus standard supported by the MCZ33990EFR2?
The MCZ33990EFR2 is designed exclusively for SAE J-1850 Class B Variable Pulse Width Modulation (VPWM) communication. It meets all physical layer requirements including 10.4 kbps data rate, 0 V to 7.0 V waveshaped bus output, and specified rise/fall times (≤15 µs), making it suitable for automotive body networks and OBD-II diagnostics.
Does the MCZ33990EFR2 require external components for basic SAE J-1850 Class B operation?
No, the MCZ33990EFR2 integrates waveshaping, voltage regulation, and bus driver protection. Only two external passive components are required: a 10.6 kΩ pull-down resistor between BUS and LOAD pins, and a 470 pF capacitor from BUS to ground - both specified in SAE J-1850 for EMI compliance and bus impedance control.
How does the MCZ33990EFR2 handle loss of ground conditions?
The MCZ33990EFR2 uses its LOAD pin as a loss-of-ground detector. When module ground is lost, the internal transistor switch disconnects, limiting LOAD pin leakage to ≤100 µA and preventing BUS from sourcing current - ensuring bus integrity remains intact for other nodes while isolating the faulty module.
Can the MCZ33990EFR2 operate with battery voltages below 9.0 V?
Yes - the MCZ33990EFR2 maintains receiver functionality down to 4.25 V VBAT, allowing wake-on-bus detection during low-voltage conditions. Transmitter operation degrades gracefully: bus output tracks VBAT −1.6 V below 9.0 V, and full VPWM transmission ceases below ~5.0 V, but RX remains active.
Is the MCZ33990EFR2 pin-compatible with newer NXP transceivers like the MC33991?
Yes, the MCZ33990EFR2 and MC33991DR2 share identical 8-pin SOICN pinout and core functionality. However, MC33991DR2 adds a VREG output pin (repurposed from unused NC) and enhanced ESD protection - board-level compatibility exists, but firmware and layout review is recommended before substitution.
MCZ33990EFR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- -
- Voltage - Supply:
- 9V ~ 16V
- Supplier Device Package:
- 8-SOIC
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
MCZ33990EFR2 FAQ
1.How can I place an order for MCZ33990EFR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCZ33990EFR2 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 MCZ33990EFR2 reliable?
The price and inventory of MCZ33990EFR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCZ33990EFR2 is usually 5 days.
3.What payment methods are accepted for MCZ33990EFR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCZ33990EFR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCZ33990EFR2?
MCZ33990EFR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCZ33990EFR2 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 MCZ33990EFR2?
For technical support, including MCZ33990EFR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCZ33990EFR2 requirements.
6.How does Aetrix verify that MCZ33990EFR2 is sourced from the original manufacturer or authorized distributors?
All MCZ33990EFR2 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 MCZ33990EFR2 meets industry standards.
7.What is the process for return or replacement of MCZ33990EFR2?
All MCZ33990EFR2 units undergo pre-shipment inspection (PSI). If there is an issue with MCZ33990EFR2, 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 MCZ33990EFR2 part is unused and in its original packaging.
Return procedure for MCZ33990EFR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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