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Home > Products > Integrated Circuits (ICs) > Interface > Controllers

NXP Semiconductors MC33388DR2

Name: MC33388DR2
Brand: NXP Semiconductors
SKU: MC33388DR2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC33388DR2

Manufacturer:: NXP Semiconductors

Category:: Controllers

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: MC33388DR2.pdf

Description:: IC TOLERANT CAN INT FAULT 14SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:1,162

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Product details

Overview

MC33388DR2 from NXP (formerly Freescale/Motorola) is an automotive fault-tolerant CAN physical layer transceiver for body electronics multiplexing. It supports 10–125 kBaud differential communication, operates from –40°C to +125°C, delivers <15 µA sleep current, and features automatic single-wire fallback during bus faults on unshielded twisted-pair wiring.

For engineers reviewing the MC33388DR2 datasheet, MC33388DR2 pinout, MC33388DR2 application, or MC33388DR2 equivalent, key selection criteria include its VBAT-supplied low-power modes (Sleep/Standby), dual-edge wake-up capability, integrated bus failure detection (8 fault types), and INH-controlled external regulator interface for system-level power management.

Technical Context

The MC33388DR2 implements a dual-mode receiver architecture: differential operation under normal conditions (V_DIFF = –2.5 V threshold), with automatic reconfiguration to single-ended CANH or CANL sensing upon wire interruption, short-circuit, or mutual short. Its transmitter uses high-side (CANH) and low-side (CANL) drivers with internal slope control (3.5–10 V/µs) to minimize RFI.

Four operational states-Normal, Receive Only, VBAT Standby, and Sleep-are controlled via STB/EN logic, with fail-safe VDD reset behavior (<3 V forces VBAT Standby). Fault recovery is autonomous: after detection (e.g., Failure 3: CANH-to-battery short, t_df3 = 10–60 µs), the device restores differential mode once bus voltage stabilizes for ≥2.5 ms in low-power modes.

Key Specifications

Parameter	Value and Actual Design Meaning
Baud Rate Range	10–125 kBaud: Supports full low-speed CAN protocol stack for body control modules without requiring external clock tuning.
Sleep Current (V_BAT)	15 µA typical: Enables always-on vehicle networks compliant with ISO 11898-3 quiescent power requirements.
Operating Temperature	–40°C to +125°C: Qualified for under-hood and cabin-mounted automotive ECUs per AEC-Q100 Grade 1.
Bus Fault Detection	8 distinct failures (e.g., CANH short-to-battery, CANL short-to-ground): Reduces need for external monitoring circuitry and enables self-healing bus operation.
Wake-up Sensitivity	Dual-edge on WAKE pin + dominant-edge on CANL/CANH: Allows reliable local (switch) and remote (bus message) wake events without external debouncing.
INH Output Function	High-side switch controlling external 5 V regulator: Integrates transceiver power sequencing with system-level supply management.
ESD Robustness	±3 kV HBM, ±200 V MM: Withstands assembly handling and in-vehicle electrostatic discharge without external protection.

Pinout & Package

MC33388DR2 is housed in a SO-14 narrow-body plastic package (Case 751A-03), rated for 120°C/W junction-to-ambient thermal resistance and qualified for automotive reflow profiles.

Pin/Terminal	Circuit Role	Design Meaning
1 INH	High-side enable output	Drives external 5 V regulator inhibit pin; floats in Sleep mode to cut VDD supply and reduce system standby power.
2 TX	Transmitter input	CMOS-compatible microcontroller TX signal; includes permanent-dominant detection (>2 ms low → auto-recessives).
3 RX	Receiver output	Active-high image of bus state (high = recessive); reports wake events in low-power modes.
4 NERR	Error/wake flag output	Open-drain, active-low: signals bus faults, VBAT power-on flag (in Receive Only), or wake events (in VBAT Standby).
5 STB	Standby mode control	CMOS input; low + EN low = VBAT Standby/Sleep; sequence determines mode entry (e.g., STB=0→1 triggers Go-to-Sleep).
6 EN	Enable mode control	CMOS input; combined with STB defines all four operating modes per truth table (e.g., EN=1/STB=1 = Normal).
7 WAKE	Wake-up trigger input	High-voltage tolerant (up to V_BAT+0.3 V); stores reference state on mode entry; detects both rising/falling edges with 500 mV hysteresis.
8 GND	Signal ground reference	Primary return path for internal analog/digital blocks; separate from power ground to maintain noise immunity.
9 CANL	Low-side bus driver	N-channel switch to ground; recessive bias via RTL; protected against short-to-VBAT and thermal shutdown at 165°C.
10 CANH	High-side bus driver	P-channel switch to VDD; recessive bias via RTH; protected against short-to-ground, short-to-VBAT, and thermal shutdown.
11 V_DD	5 V logic supply	Input for internal digital core; under-voltage lockout forces VBAT Standby if <3 V; draws ≤5 mA in Normal mode.
12 V_BAT	Battery supply input	Direct connection to 6–27 V vehicle battery; sustains 40 V load dump; supplies 15 µA sleep current and powers INH/WAKE logic when VDD=0.
13 RTL	CANL termination control	Switched low-side output; connects external resistor to VDD (Normal) or VBAT (Sleep/Standby) to bias CANL line appropriately per mode.
14 RTH	CANH termination control	Switched low-side output; connects external resistor to GND (Normal) to complete CANH pull-down; disabled during CANH faults.

Key Features

Feature	Design Value
Fault-tolerant bus operation	Automatic switch to single-wire mode on 8 defined failures (e.g., CANH open, CANL short-to-GND), with seamless return to differential mode upon recovery.
Ultra-low-power sleep mode	15 µA V_BAT current enables >10-year battery life in always-on vehicle networks without compromising wake responsiveness.
Integrated system power control	INH output directly manages external 5 V regulator, enabling coordinated VDD sequencing and eliminating need for discrete power supervisors.
Robust wake-up architecture	Dual-edge WAKE pin + bus-edge wake-up ensures reliable entry from Sleep/Standby without external RC timing components.
Automotive-grade transient protection	Withstands ±40 V bus transients, –150/+100 V coupled ESD pulses, and 40 V battery load dump-no external TVS required for ISO 7637-2 compliance.

Applications

Body Control Module (BCM)	Door Module
Use Scenario: Centralized control of lighting, windows, locks, and mirrors across multiple vehicle doors using a single CAN backbone. IC Role / Device Role / Timing Role: Physical layer transceiver interfacing MCU to low-speed CAN bus; handles bus arbitration, fault recovery, and wake-up signaling. Use Value: Enables fail-safe operation during wiring faults (e.g., chafed harnesses), reducing warranty claims and field recalls by maintaining partial functionality.	Use Scenario: Distributed module inside door panel managing window lift, mirror fold, and interior lamp dimming. IC Role / Device Role / Timing Role: CAN PHY providing isolated, low-quiescent-current bus interface; supports sleep mode during vehicle off-state to prevent battery drain. Use Value: 15 µA sleep current meets OEM requirements for <20 µA node leakage, extending parked vehicle battery life beyond 30 days.
Roof Module	Seat Control Unit
Use Scenario: Integration of sunroof, ambient lighting, and rain sensor into roof console with minimal wiring harness weight. IC Role / Device Role / Timing Role: Fault-tolerant CAN transceiver enabling communication over unshielded twisted pair, reducing cable cost and weight. Use Value: Internal slew-rate control (3.5–10 V/µs) eliminates need for external R-C filters, simplifying PCB layout and passing CISPR 25 Class 5 emissions.	Use Scenario: Motorized seat position memory and heating control linked to central body network. IC Role / Device Role / Timing Role: Bus interface with INH-driven power sequencing-activates 5 V rail only when seat MCU requires CAN communication. Use Value: Reduces system-level standby power by 85% compared to always-on regulator designs, critical for multi-seat configurations.

Body Control Module (BCM)

Door Module

Use Scenario: Centralized control of lighting, windows, locks, and mirrors across multiple vehicle doors using a single CAN backbone.

IC Role / Device Role / Timing Role: Physical layer transceiver interfacing MCU to low-speed CAN bus; handles bus arbitration, fault recovery, and wake-up signaling.

Use Value: Enables fail-safe operation during wiring faults (e.g., chafed harnesses), reducing warranty claims and field recalls by maintaining partial functionality.

Use Scenario: Distributed module inside door panel managing window lift, mirror fold, and interior lamp dimming.

IC Role / Device Role / Timing Role: CAN PHY providing isolated, low-quiescent-current bus interface; supports sleep mode during vehicle off-state to prevent battery drain.

Use Value: 15 µA sleep current meets OEM requirements for <20 µA node leakage, extending parked vehicle battery life beyond 30 days.

Roof Module

Seat Control Unit

Use Scenario: Integration of sunroof, ambient lighting, and rain sensor into roof console with minimal wiring harness weight.

IC Role / Device Role / Timing Role: Fault-tolerant CAN transceiver enabling communication over unshielded twisted pair, reducing cable cost and weight.

Use Value: Internal slew-rate control (3.5–10 V/µs) eliminates need for external R-C filters, simplifying PCB layout and passing CISPR 25 Class 5 emissions.

Use Scenario: Motorized seat position memory and heating control linked to central body network.

IC Role / Device Role / Timing Role: Bus interface with INH-driven power sequencing-activates 5 V rail only when seat MCU requires CAN communication.

Use Value: Reduces system-level standby power by 85% compared to always-on regulator designs, critical for multi-seat configurations.

Equivalent & Alternatives

The following parts are listed as comparable options for similar CAN transceiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TJA1042T/3	Higher ESD rating (±8 kV HBM), faster propagation delay (≤150 ns), but no INH output or VBAT sleep mode.	Lacks integrated system power control; requires external supervisor for low-power sequencing.	Preferred where EMC robustness is primary concern and external power management is already present.
SN65HVD230QDRQ1	Lower quiescent current (1 µA sleep), but no fault-tolerant single-wire mode or wake-up on bus edges.	Supports basic CAN but cannot recover from wiring faults-requires redundant bus design for safety-critical nodes.	Selected for cost-sensitive, non-fault-tolerant applications where ultra-low sleep current outweighs bus resilience needs.

Compared with TJA1042T/3 and SN65HVD230QDRQ1, the MC33388DR2 uniquely integrates VBAT-supplied sleep mode, INH-based power sequencing, and autonomous fault recovery-making it optimal for automotive body networks demanding both low power and functional safety without added components.

Availability

MC33388DR2 is available at Aetrix Electronics and suitable for body control modules, door modules, roof consoles, and seat control units requiring stable component supply across extended automotive production lifecycles.

Supply support for MC33388DR2 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 semiconductor solutions, with deep expertise in CAN, LIN, and SBC technologies for vehicle networking and domain controllers.

The MC33388DR2 belongs to NXP's legacy automotive CAN transceiver portfolio, designed specifically for fault-tolerant, low-speed body electronics applications operating in harsh environments with stringent power and reliability requirements.

FAQ

What is the maximum bus speed supported by the MC33388DR2?

The MC33388DR2 supports CAN data rates from 10 kBaud up to 125 kBaud. This range covers all standard low-speed CAN applications defined in ISO 11898-3, including body electronics, comfort systems, and distributed control modules where deterministic timing and fault tolerance are essential. The device maintains signal integrity across this range using programmable slew-rate control and integrated receiver filtering.

How does the MC33388DR2 handle CAN bus wiring faults?

The MC33388DR2 detects and responds to eight distinct bus faults-including CANH/CANL wire interruptions, shorts to battery/ground/VDD, and mutual shorts-by automatically disabling affected drivers and switching to single-ended reception on the functional line. Recovery is fully autonomous: once the fault clears and bus voltage stabilizes for ≥2.5 ms (in low-power modes), the MC33388DR2 restores differential operation without MCU intervention.

What is the role of the INH pin on the MC33388DR2?

The INH pin on the MC33388DR2 is a high-side switch output used to control an external 5 V voltage regulator. In Normal, Receive Only, and VBAT Standby modes, INH is driven high to enable the regulator; in Sleep mode, INH floats to disable the regulator and eliminate VDD-related leakage. This integrated power sequencing reduces system-level component count and ensures synchronized wake-up across the ECU.

Can the MC33388DR2 operate without a VDD supply?

Yes-the MC33388DR2 can operate solely from V_BAT in Sleep and VBAT Standby modes, drawing just 15 µA typical from the battery. During these states, internal logic remains active to monitor CANL/CANH for dominant edges and the WAKE pin for transitions. When wake conditions occur, the MC33388DR2 asserts INH to restore VDD, enabling full transceiver functionality without external power management circuitry.

What are the wake-up sources supported by the MC33388DR2?

The MC33388DR2 supports three independent wake-up sources: dominant-edge detection on CANL or CANH bus lines (remote wake-up), dual-edge transitions on the WAKE pin (local wake-up), and VBAT power-on events. All wake sources are active in Sleep and VBAT Standby modes, with built-in filtering (8–38 µs) to reject RF noise and transients. The wake event is signaled via NERR (in VBAT Standby) or RX (in Sleep mode) to the host MCU.

MC33388DR2 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Programmable:: Not Verified

Protocol:: CANbus

Function:: Physical Layer Controller

Interface:: -

Standards:: -

Voltage - Supply:: 4.75V ~ 5.25V

Current - Supply:: 5mA

Operating Temperature:: -40°C ~ 125°C

Supplier Device Package:: 14-SO

Grade:: -

Qualification:: -

MC33388DR2 FAQ

1.How can I place an order for MC33388DR2 through Aetrix?

Please submit a Request for Quotation (RFQ) for MC33388DR2 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 MC33388DR2 reliable?

The price and inventory of MC33388DR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33388DR2 is usually 5 days.

3.What payment methods are accepted for MC33388DR2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33388DR2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC33388DR2?

MC33388DR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC33388DR2 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 MC33388DR2?

For technical support, including MC33388DR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33388DR2 requirements.

6.How does Aetrix verify that MC33388DR2 is sourced from the original manufacturer or authorized distributors?

All MC33388DR2 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 MC33388DR2 meets industry standards.

7.What is the process for return or replacement of MC33388DR2?

All MC33388DR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33388DR2, 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 MC33388DR2 part is unused and in its original packaging.

Return procedure for MC33388DR2:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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