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Texas Instruments ISO6742FQDWRQ1
- Part No.:
- ISO6742FQDWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISO6742FQDWRQ1.pdf
- Description:
- AUTOMOTIVE, GENERAL-PURPOSE, QUA
- Quantity:
- Payment:
- Shipping:
Inventory:3,125
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Product details
Overview
ISO6742FQDWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive quad-channel digital isolator with reinforced isolation, two forward/two reverse channel directionality, and default-low output logic. It delivers 50 Mbps data rate, ±150 kV/μs CMTI, 5000 VRMS isolation rating, and operates across 1.71–5.5 V dual supplies. It is used in EV inverter gate drive signal conditioning where bidirectional control and high-noise immunity are required.
For engineers reviewing the ISO6742FQDWRQ1 datasheet, ISO6742FQDWRQ1 pinout, ISO6742FQDWRQ1 application, or ISO6742FQDWRQ1 equivalent, key selection criteria include channel direction configuration (2F/2R), F-suffix default-low behavior, DWW package creepage (>14.5 mm), VDE/UL/IEC safety certifications, and robust EMC performance including ±8 kV IEC 61000-4-2 contact discharge across the barrier.
Technical Context
The ISO6742FQDWRQ1 implements TI's double capacitive SiO₂ insulation barrier to achieve reinforced isolation up to 5000 VRMS. Its two forward/two reverse channel topology enables bidirectional communication between controller and power stage without external logic inversion.
It integrates independent enable pins (EN1, EN2) per side for high-impedance output control in multi-controller systems, and supports wide supply ranges (1.71–1.89 V and 2.25–5.5 V) with level translation across sides - enabling interoperability between 1.8 V microcontrollers and 5 V gate drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 50 Mbps - supports high-speed CAN FD, SPI, or PWM feedback loops in motor control. |
| Isolation Rating | 5000 VRMS - meets reinforced insulation requirements for EV traction inverters per VDE 0884-17 and UL 1577. |
| CMTI | ±150 kV/μs typical - rejects fast transients from IGBT/SiC switching noise in high-dV/dt environments. |
| Supply Range | 1.71–1.89 V and 2.25–5.5 V - allows direct interface with low-voltage MCUs and legacy 3.3/5 V peripherals. |
| Propagation Delay | 11 ns typical - enables precise timing-critical gate drive synchronization in real-time control loops. |
| Default Output State | Low (F-suffix) - ensures safe deactivation of power stages during MCU boot or fault conditions. |
| Surge Capability | 10 kV peak - withstands system-level surge events per IEC 62368-1 in on-board chargers and DC/DC converters. |
Pinout & Package
ISO6742FQDWRQ1 uses the DWW (Extra Wide SOIC-16) package with 10.30 mm × 17.25 mm footprint and >14.5 mm creepage/clearance - optimized for reinforced isolation in high-voltage automotive subsystems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC1, VCC2 | Independent input/output supply rails | Enable level-shifting between 1.8 V MCU and 5 V gate driver; UVLO thresholds ensure clean startup. |
| GND1, GND2 | Isolated input/output ground references | Prevent ground-loop currents in high-noise power domains; require separate PCB planes. |
| INA, INB, INC, IND | Input terminals for four isolated channels | Accept CMOS/LVCMOS signals; support 0.3×VCCI to 0.7×VCCI hysteresis for noise margin. |
| OUTA, OUTB, OUTC, OUTD | Output terminals with F-suffix default-low behavior | Drive downstream logic or gate drivers; outputs enter high-Z when respective ENx = low. |
| EN1, EN2 | Side-1 and side-2 output enable controls | Allow dynamic tri-state control of all outputs on each side - essential for bus arbitration in multi-controller BMS architectures. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation Barrier | Double capacitive SiO₂ dielectric provides 5000 VRMS working voltage and 10 kV surge immunity - certified to VDE 0884-17, UL 1577, and IEC 62368-1. |
| Automotive Qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient) and VDA320 compliance - qualified for under-hood deployment in EV powertrain systems. |
| Robust EMC Performance | ±8 kV IEC 61000-4-2 contact ESD across barrier, system-level EFT/surge immunity, and low emissions - reduces need for external filtering in compact inverters. |
| Configurable Channel Direction | Two forward + two reverse channels (ISO6742) - eliminates external inverters in bidirectional current sensing or dual-MCU coordination paths. |
| Low-Power Operation | 1.6 mA/channel typical at 1 Mbps - enables energy-efficient isolation in always-on battery monitoring circuits. |
Applications
| Battery Management System (BMS) | On-Board Charger (OBC) |
|---|---|
Use Scenario: Isolating cell voltage monitoring ADC interfaces and pack contactor control signals in 800-V EV battery packs. IC Role / Device Role / Timing Role: Quad-channel isolator providing reinforced barrier between low-voltage MCU domain and high-voltage battery domain; 2F/2R configuration routes status and command signals bidirectionally. Use Value: Enables accurate 16-bit cell voltage sampling while meeting IEC 62368-1 reinforced insulation requirements and surviving 10 kV surge events during charging faults. | Use Scenario: Signal isolation between PFC controller and LLC resonant converter in 11-kW OBC modules. IC Role / Device Role / Timing Role: Isolates PWM gate drive signals and feedback signals (current sense, voltage sense) across primary-secondary boundary; F-suffix ensures safe shutdown on controller reset. Use Value: 11 ns propagation delay preserves timing integrity in 100+ kHz switching loops; ±150 kV/μs CMTI prevents false triggering during diode reverse recovery transients. |
| Inverter Gate Drive Interface | DC/DC Converter Control |
Use Scenario: Isolating MCU PWM outputs and DESAT/FAULT feedback signals in SiC-based traction inverters. IC Role / Device Role / Timing Role: Provides galvanic separation for high-side/low-side gate drivers and fast fault reporting; EN1/EN2 allow coordinated disable during overcurrent events. Use Value: 50 Mbps data rate supports high-resolution dead-time control; 5000 VRMS rating satisfies reinforced insulation for 800-V bus systems per ISO 26262 ASIL-D functional safety path. | Use Scenario: Isolating digital control signals between primary-side controller and secondary-side synchronous rectifier drivers in isolated 48 V–12 V DC/DC modules. IC Role / Device Role / Timing Role: Transfers PWM commands and voltage regulation feedback across isolation barrier; dual supply range accommodates 1.8 V controller and 5 V driver ICs. Use Value: Level translation capability eliminates discrete level shifters; low 1.6 mA/channel quiescent current extends standby efficiency in always-on vehicle networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel reinforced digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8642ED-B-IS | 4-channel, 2F/2R, 5000 VRMS, 150 Mbps, SOIC-16 (DW), default-high output | Higher speed but lacks AEC-Q100 Grade 1 qualification and VDA320 certification | Select when higher bandwidth is needed and automotive qualification is not required. |
| ADUM2402BRWZ-RL | 4-channel, 2F/2R, 5000 VRMS, 25 Mbps, SOIC-16 (DW), default-high output, no AEC-Q100 | Lower data rate, no automotive qualification, lower CMTI (75 kV/μs) | Select for cost-sensitive industrial applications where 25 Mbps suffices and automotive compliance is unnecessary. |
Compared with SI8642ED-B-IS and ADUM2402BRWZ-RL, ISO6742FQDWRQ1 uniquely combines AEC-Q100 Grade 1, VDA320, and VDE/UL/IEC safety certifications with 2F/2R channel direction and F-suffix default-low behavior - making it the only qualified option for ASIL-B/C inverter control and BMS signal isolation in production EV platforms.
Availability
ISO6742FQDWRQ1 is available at Aetrix Electronics and suitable for battery management systems, on-board chargers, traction inverters, and DC/DC converters requiring stable component supply for automotive production programs.
Supply support for ISO6742FQDWRQ1 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and automotive-grade ICs with decades of isolation technology development.
The ISO674x-Q1 family targets high-reliability automotive powertrain systems, delivering reinforced isolation, functional safety support, and robust EMC for EV/HEV battery, charger, and motor control applications.
FAQ
What does the 'F' suffix in ISO6742FQDWRQ1 indicate?
The 'F' suffix in ISO6742FQDWRQ1 specifies default-low output behavior: when input power or signal is lost, all four output channels (OUTA–OUTD) drive low. This fail-safe state ensures gate drivers remain disabled and contactors stay open during MCU reset or brownout - a critical requirement for ASIL-B/C functional safety in EV powertrain systems. The non-F variant ISO6742QDWRQ1 defaults high.
How does ISO6742FQDWRQ1 differ from ISO6740FQDWRQ1 and ISO6741FQDWRQ1?
ISO6742FQDWRQ1 has two forward and two reverse-direction channels (2F/2R), whereas ISO6740FQDWRQ1 has four forward-only channels and ISO6741FQDWRQ1 has three forward and one reverse channel. All three share identical DWW package, 5000 VRMS isolation, AEC-Q100 Grade 1 rating, and F-suffix default-low behavior - but channel directionality determines suitability for bidirectional communication paths like current-sense feedback or dual-MCU coordination in ISO6742FQDWRQ1.
What safety certifications apply to ISO6742FQDWRQ1?
ISO6742FQDWRQ1 holds DIN EN IEC 60747-17 (VDE 0884-17), UL 1577, IEC 62368-1, IEC 61010-1, IEC 60601-1, and GB 4943.1 certifications. It achieves 5000 VRMS reinforced insulation with 1500 VRMS working voltage, 7071 VPK transient voltage, and 10 kV surge rating - fully compliant with VDA320 and AEC-Q100 for automotive powertrain deployment.
Can ISO6742FQDWRQ1 operate with mismatched supply voltages on VCC1 and VCC2?
Yes, ISO6742FQDWRQ1 supports independent supply rails: VCC1 (input side) and VCC2 (output side) may be set to different voltages within their respective ranges (1.71–1.89 V or 2.25–5.5 V). This enables true level translation - for example, interfacing a 1.8 V automotive MCU to a 5 V gate driver IC - without external level shifters, preserving signal integrity and reducing BOM count.
What is the purpose of EN1 and EN2 pins on ISO6742FQDWRQ1?
EN1 and EN2 are independent output-enable controls for side-1 (inputs INA–IND) and side-2 (outputs OUTA–OUTD). When pulled low, they place all outputs on that side into high-impedance state - enabling bus sharing in multi-controller architectures (e.g., redundant BMS controllers) and safe power sequencing during system startup or fault recovery. Both pins default to enabled when left open or tied high.
ISO6742FQDWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- ISO674x
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- CAN
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- 50Mbps
- Propagation Delay tpLH / tpHL (Max):
- 18ns, 18ns
- Pulse Width Distortion (Max):
- 7ns
- Rise / Fall Time (Typ):
- 2.6ns, 2.6ns
- Voltage - Supply:
- 1.71V ~ 1.89V, 2.25V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ISO6742FQDWRQ1 FAQ
1.How can I place an order for ISO6742FQDWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO6742FQDWRQ1 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 ISO6742FQDWRQ1 reliable?
The price and inventory of ISO6742FQDWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO6742FQDWRQ1 is usually 5 days.
3.What payment methods are accepted for ISO6742FQDWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO6742FQDWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO6742FQDWRQ1?
ISO6742FQDWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO6742FQDWRQ1 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 ISO6742FQDWRQ1?
For technical support, including ISO6742FQDWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO6742FQDWRQ1 requirements.
6.How does Aetrix verify that ISO6742FQDWRQ1 is sourced from the original manufacturer or authorized distributors?
All ISO6742FQDWRQ1 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 ISO6742FQDWRQ1 meets industry standards.
7.What is the process for return or replacement of ISO6742FQDWRQ1?
All ISO6742FQDWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ISO6742FQDWRQ1, 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 ISO6742FQDWRQ1 part is unused and in its original packaging.
Return procedure for ISO6742FQDWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO6742FQDWRQ1 Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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