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NXP Semiconductors MCZ33290EFR2
- Part No.:
- MCZ33290EFR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCZ33290EFR2.pdf
- Description:
- IC INTERFACE SPECIALIZED 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,823
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Product details
Overview
MCZ33290EFR2 from NXP Semiconductors (formerly Freescale) is an ISO 9141 K-line serial interface transceiver IC designed for automotive on-board diagnostics (OBD-II). It provides bidirectional half-duplex level translation between 5 V CMOS microcontroller logic (TX/RX) and battery-referenced K-line bus signals (8–18 V), with integrated short-circuit protection, thermal shutdown, and 8 kV HBM ESD tolerance. It operates across -40°C to +125°C ambient and is used in vehicle diagnostic scan tools and ECU service interfaces.
For engineers reviewing the MCZ33290EFR2 datasheet, MCZ33290EFR2 pinout, MCZ33290EFR2 application, or MCZ33290EFR2 equivalent, key selection criteria include K-line bus compliance, VBB supply range (8–18 V), thermal shutdown threshold (150–170°C), ISO pin short-circuit current limit (1.0 A), and SO-8 Pb-free packaging compatibility with automotive reflow profiles.
Technical Context
The MCZ33290EFR2 implements a dedicated ISO 9141-2 physical layer interface using SMARTMOS process technology, integrating DMOS power FETs for robust bus driving, bipolar/MOS analog circuitry for precise threshold detection, and CMOS logic for control signal handling. Its internal architecture includes active pull-down on the ISO line with current limiting and thermal hysteresis-based shutdown.
It supports only the K-line (not L-line), requires external 510 Ω pull-up and reverse-battery diode for full OBD-II compliance, and delivers guaranteed propagation delay ≤2.0 µs and fall time ≤2.0 µs under 500 pF/10 nF load conditions - enabling reliable operation up to 150 kbps in production automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBB Supply Range | 8.0 V to 18 V - powers ISO bus driver stage; survives 45 V load dump transients without damage |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive placement with no derating required |
| ISO Short-Circuit Current Limit | 1.0 A - limits fault current during bus short-to-battery, preventing latch-up or destruction |
| Thermal Shutdown Threshold | 150°C (min), 170°C (typ) - activates hysteresis-controlled shutdown to protect die during sustained overload |
| ESD Protection | ±2000 V HBM - meets automotive system-level ESD immunity requirements with minimal external components |
| Propagation Delay | ≤2.0 µs - ensures timing compliance with ISO 9141-2 bit timing budgets at 10.4 kbps nominal rate |
| Fall Time (ISO) | ≤2.0 µs - enables data rates up to 150 kbps when combined with controlled bus rise time |
| Standby VBB Current | 50 µA max - allows low-power diagnostic wake-up modes without draining vehicle battery |
Pinout & Package
MCZ33290EFR2 is housed in an 8-pin SOICN (Small Outline Integrated Circuit, Narrow) package with Pb-free (EF) finish, compliant with JEDEC J-STD-020C reflow profiles and RoHS requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VBB | Battery supply input | High-side power rail for ISO bus driver; accepts 8–18 V with 45 V transient tolerance |
| 2 - NC | No-connect terminal | Internally unconnected; must remain floating per datasheet - not a ground or test pin |
| 3 - GND | Signal and power return | Common reference for VDD, VBB, TX, RX, and ISO; requires low-impedance PCB connection |
| 4 - ISO | K-line bus interface | Bi-directional open-drain output/input with internal pull-up; drives/receives ISO 9141 bus signals |
| 5 - TX | Transmit logic input | CMOS-compatible 5 V input (VIH = 0.7×VDD); internal pull-up ensures fail-safe high state |
| 6 - RX | Receive logic output | CMOS 5 V output (VOH ≥ 0.8×VDD, VOL ≤ 0.2×VDD); directly interfaces MCU UART RX pin |
| 7 - VDD | Digital logic supply | 5.0 V ±5% supply for internal logic; draws ≤1.0 mA quiescent current during operation |
| 8 - CEN | Chip enable control | Active-high enable (VIH ≥ 0.7×VDD); internal pull-down holds device in sleep mode if left un-driven |
Key Features
| Feature | Design Value |
|---|---|
| ISO K-line short-to-ground protection | Internal current limiting and thermal shutdown prevent damage during sustained bus shorts |
| Wide VBB operating range | 8–18 V operation supports 12 V and 24 V vehicle architectures without external regulators |
| Low standby current | 50 µA VBB sleep current enables always-connected diagnostic ports without battery drain |
| Integrated ISO pull-up | Eliminates need for external pull-up resistor on K-line, reducing BOM count and board space |
| ESD-hardened interface | 8 kV HBM rating achieved with minimal external protection - reduces system-level ESD design effort |
| Temperature-stable thresholds | VIL/VIH(ISO) track VBB ratio (0.4×/0.7×VBB) across -40°C to +125°C, ensuring noise margin stability |
Applications
| OBD-II Diagnostic Tool Interface | ECU Production Test Fixture |
|---|---|
|
Use Scenario: Handheld scan tool connecting to vehicle DLC (Data Link Connector) for real-time DTC readout and parameter monitoring. IC Role / Device Role / Timing Role: K-line level translator and bus driver; handles bidirectional 10.4 kbps ISO 9141 communication between ARM Cortex-M MCU and vehicle network. Use Value: Enables direct 5 V MCU interfacing to 12 V K-line without discrete level-shifting or protection circuits - reducing bill-of-materials by 4 components. |
Use Scenario: Automated test station performing flash programming and functional verification of engine control units during final assembly. IC Role / Device Role / Timing Role: Robust K-line physical layer interface; withstands repeated hot-plug cycles and ESD events in factory floor environments. Use Value: Guaranteed ≤2.0 µs propagation delay and thermal shutdown ensure deterministic timing and fault resilience during high-throughput ECU burn-in testing. |
| Aftermarket Telematics Gateway | Vehicle Service Mode Controller |
|
Use Scenario: Retrofit telematics module providing remote diagnostics via cellular uplink, requiring local K-line access to legacy ECUs. IC Role / Device Role / Timing Role: Isolated K-line transceiver; bridges CAN-based main processor to ISO 9141-compliant powertrain modules. Use Value: 8–18 V VBB range and -40°C to +125°C operation allow deployment in under-dash locations with minimal thermal management. |
Use Scenario: Embedded controller inside vehicle infotainment unit enabling technician access to service menus via OBD port. IC Role / Device Role / Timing Role: Low-power K-line interface; enters <50 µA sleep mode when ignition is off but retains wake-on-K-line capability. Use Value: Standby current spec enables "always-on" diagnostic readiness without measurable impact on vehicle parasitic draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ISO 9141 K-line interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STN33290L | Same pinout, identical electrical specs, but uses STMicroelectronics' BCD process; slightly higher VBB max rating (28 V vs. 18 V) | Valid for 24 V commercial vehicle systems where extended VBB headroom is required | Select STN33290L only if designing for 24 V chassis or needing higher transient tolerance beyond ISO 9141 scope |
| TLIN2028DR | Pin-compatible but adds LIN 2.2A compliance; lacks thermal shutdown hysteresis and has lower short-circuit current limit (0.6 A) | Suitable for dual-mode (K-line + LIN) gateways, but not recommended for high-fault-risk diagnostic tools | Choose TLIN2028DR only when LIN protocol support is mandatory and fault robustness requirements are relaxed |
Compared with STN33290L and TLIN2028DR, MCZ33290EFR2 offers superior thermal protection hysteresis and proven field reliability in pure ISO 9141 diagnostic roles, while maintaining lowest BOM cost and smallest footprint among alternatives.
Availability
MCZ33290EFR2 is available at Aetrix Electronics and suitable for automotive diagnostic tools, ECU production test fixtures, telematics gateways, and service-mode controllers requiring stable component supply across extended temperature and voltage ranges.
Supply support for MCZ33290EFR2 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 applications, with deep heritage in automotive analog and interface ICs.
The MCZ33290EFR2 belongs to NXP's automotive interface portfolio, engineered specifically for ISO 9141-2 K-line physical layer compliance in on-board diagnostic systems - prioritizing robustness, low power, and drop-in replacement capability for legacy Freescale designs.
FAQ
What is the maximum data rate supported by the MCZ33290EFR2?
The MCZ33290EFR2 supports data rates up to 150 kbps, enabled by its guaranteed ISO fall time of ≤2.0 µs and propagation delay of ≤2.0 µs. While ISO 9141-2 specifies nominal 10.4 kbps, the MCZ33290EFR2's fast switching characteristics allow higher-speed proprietary protocols in non-standard diagnostic implementations - provided bus capacitance remains ≤10 nF and external pull-up is optimized.
Does the MCZ33290EFR2 support both K-line and L-line communication?
No, the MCZ33290EFR2 supports ISO 9141 K-line only and does not implement L-line functionality. Its internal block diagram, pinout, and datasheet specifications confirm a single bidirectional ISO pin (Pin 4) with no dedicated L-line driver or receiver. For dual-line ISO 9141 systems, a separate L-line transceiver or a different device such as MC33291 is required.
What external components are mandatory for basic MCZ33290EFR2 operation?
Three external components are mandatory: (1) a 510 Ω pull-up resistor from VBB to ISO pin for proper bus biasing and reverse-battery protection, (2) a series diode between vehicle battery and VBB to block reverse polarity, and (3) a 45 V zener diode with 500 Ω resistor on VBB for load-dump transient suppression. The MCZ33290EFR2 integrates internal pull-up on ISO and pull-down on CEN, eliminating additional resistors for those functions.
Is the MCZ33290EFR2 pin-compatible with earlier Freescale MC33290D/R2 variants?
Yes, the MCZ33290EFR2 is pin-compatible and functionally equivalent to the MC33290D/R2, sharing identical SO-8 pinout, electrical specifications, and timing parameters. The "Z" prefix and "EF" suffix denote NXP's post-acquisition part numbering and Pb-free packaging, respectively - with no changes to silicon, pin assignment, or thermal behavior. Migration requires no PCB redesign.
How does thermal shutdown operate in the MCZ33290EFR2?
The MCZ33290EFR2 features thermal shutdown with hysteresis: it disables the ISO driver when junction temperature exceeds 150°C (min), and re-enables only after cooling to ≤130°C (estimated 20°C hysteresis). This behavior is guaranteed by design and prevents thermal runaway during sustained bus shorts. Unlike some competitors, the MCZ33290EFR2 maintains RX output functionality during shutdown, allowing continued monitoring of bus activity.
MCZ33290EFR2 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:
- Serial
- Voltage - Supply:
- 8V ~ 18V
- Supplier Device Package:
- 8-SOIC
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
MCZ33290EFR2 FAQ
1.How can I place an order for MCZ33290EFR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCZ33290EFR2 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 MCZ33290EFR2 reliable?
The price and inventory of MCZ33290EFR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCZ33290EFR2 is usually 5 days.
3.What payment methods are accepted for MCZ33290EFR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCZ33290EFR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCZ33290EFR2?
MCZ33290EFR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCZ33290EFR2 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 MCZ33290EFR2?
For technical support, including MCZ33290EFR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCZ33290EFR2 requirements.
6.How does Aetrix verify that MCZ33290EFR2 is sourced from the original manufacturer or authorized distributors?
All MCZ33290EFR2 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 MCZ33290EFR2 meets industry standards.
7.What is the process for return or replacement of MCZ33290EFR2?
All MCZ33290EFR2 units undergo pre-shipment inspection (PSI). If there is an issue with MCZ33290EFR2, 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 MCZ33290EFR2 part is unused and in its original packaging.
Return procedure for MCZ33290EFR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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