My Inquiry
My Account
Texas Instruments ISO7761FQDBQRQ1
- Part No.:
- ISO7761FQDBQRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ISO7761FQDBQRQ1.pdf
- Description:
- DGTL ISO 3000VRMS 6CH 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,029
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISO7761FQDBQRQ1 from Texas Instruments is a reinforced six-channel digital isolator for automotive systems, delivering 100Mbps data rate, ±100kV/μs CMTI, and 5000VRMS isolation (DW package) or 3000VRMS (DBQ package). It operates across 2.25V–5.5V supply rails with level translation and features default-low output logic (F-suffix), supporting BMS and traction inverter signal isolation.
For engineers reviewing the ISO7761FQDBQRQ1 datasheet, ISO7761FQDBQRQ1 pinout, ISO7761FQDBQRQ1 application, or ISO7761FQDBQRQ1 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification (–40°C to +125°C), VDE/UL/CSA/TUV safety certifications, robust EMC immunity (±8kV IEC 61000-4-2 contact discharge), and SSOP-16 package compatibility with space-constrained EV powertrain modules.
Technical Context
The ISO7761FQDBQRQ1 implements dual capacitive SiO₂ isolation barriers per channel, enabling reinforced insulation certified to DIN EN IEC 60747-17 (VDE 0884-17) and UL 1577. Its architecture supports asymmetric supply operation (VCCI ≠ VCCO) and bidirectional channel configuration flexibility - specifically, one reverse-direction channel (INF→OUTF) with five forward-direction channels (INA→OUTA through INE→OUTE).
Functional safety support includes documentation for ISO 26262 ASIL-B system integration, while electromagnetic resilience stems from on-chip noise filtering, low emissions design, and system-level ESD/EFT/surge immunity validated per IEC 61000-4-x standards. The device's 11ns typical propagation delay at 5V ensures timing-critical control loop integrity in motor gate drivers and battery cell monitoring interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 100 Mbps maximum - enables high-speed CAN FD, SPI, or PWM feedback in real-time EV powertrain control. |
| Isolation Rating | 3000 VRMS (UL 1577, DBQ package) - meets reinforced insulation requirements for 400V DC bus interfaces in on-board chargers. |
| CMTI | ±100 kV/μs typical - prevents false triggering during fast-switching transients in traction inverters with >10 kHz SiC/GaN switching. |
| Supply Range | 2.25 V to 5.5 V per side - allows direct interfacing with 3.3V microcontrollers and 5V isolated power supplies without level shifters. |
| Propagation Delay | 11 ns typical at 5V - supports sub-microsecond timing margins in closed-loop motor current sensing and protection circuits. |
| Ambient Temp | –40°C to +125°C (Grade 1) - qualified for under-hood placement in battery management systems and DC/DC converters. |
| ESD Rating | ±8 kV contact discharge (IEC 61000-4-2 across barrier) - protects against assembly-line ESD events without external TVS diodes. |
Pinout & Package
ISO7761FQDBQRQ1 uses a 16-pin SSOP (DBQ) package measuring 4.90 mm × 3.90 mm (body) / 4.90 mm × 6.00 mm (overall), optimized for high-density automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC1 | Input-side power supply | Supplies logic for INA–INF inputs; independent of VCC2, enabling level translation between 2.5V MCU and 5V actuator side. |
| VCC2 | Output-side power supply | Supplies logic for OUTA–OUTF outputs; decoupling required per TI layout guidelines to maintain CMTI performance. |
| GND1 | Input-side ground reference | Return path for VCC1 and all input signals; must be separated from GND2 by ≥8 mm creepage on PCB per safety certification. |
| GND2 | Output-side ground reference | Return path for VCC2 and all output signals; galvanically isolated from GND1 to break ground loops in noisy power domains. |
| INA–INE | Input channels A–E (forward) | CMOS/LVCMOS-compatible inputs accepting 0.3×VCCI to 0.7×VCCI thresholds; drive internal capacitive isolation barrier. |
| INF | Input channel F (reverse) | Configured as reverse-direction input - signal flows from output side to input side, enabling feedback path isolation in closed-loop systems. |
| OUTA–OUTE | Output channels A–E (forward) | Push-pull CMOS outputs with 4 mA sink/source capability at 5V; default-low state when input power loss occurs (F-suffix behavior). |
| OUTF | Output channel F (reverse) | Corresponds to INF; provides isolated feedback signal to input domain - used for fault reporting or status monitoring across isolation barrier. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Insulation Certification | DIN EN IEC 60747-17 (VDE 0884-17), UL 1577, CSA 62368-1, TUV EN 62368-1 - eliminates need for external safety capacitors in ASIL-B designs. |
| Automotive Qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient), HBM ESD Class 3A, CDM Class C6 - ensures reliability in harsh vehicle environments without derating. |
| Low-Power Operation | 1.4 mA per channel typical at 1 Mbps - reduces thermal load in sealed BMS enclosures and extends battery runtime in always-on monitoring modes. |
| Robust EMC Performance | System-level EFT/surge immunity and <10 mW radiated emissions at 100 MHz - simplifies CISPR 25 Class 5 compliance for powertrain ECUs. |
| Default-Low Output Logic | F-suffix indicates active-low default state on power loss - critical for fail-safe shutdown of gate drivers or contactors in high-voltage battery disconnect sequences. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
Use Scenario: Isolating cell voltage measurement ADC signals and pack contactor control lines in 400V/800V EV battery packs. IC Role / Device Role / Timing Role: Six-channel isolator separates MCU domain (3.3V) from high-side sensing and precharge circuitry (5V/12V), with INF→OUTF providing isolated fault feedback. Use Value: Enables precise 16-bit ADC sampling without ground loop noise, while meeting ASIL-D diagnostic coverage requirements via functional safety documentation support. | Use Scenario: Transmitting PWM gate drive signals and receiving desaturation feedback from IGBT/SiC modules in electric vehicle traction inverters. IC Role / Device Role / Timing Role: Forward channels (INA–INE) carry three-phase PWM and enable signals; reverse channel (INF/OUTF) returns overcurrent status to MCU side with <11 ns latency. Use Value: Guarantees <100 ns total propagation skew across all six channels, preserving phase alignment in vector-controlled motor drives. |
| On-board Charger (OBC) | DC/DC Converter Monitoring |
Use Scenario: Isolating communication between primary-side controller and secondary-side 48V/12V output regulation circuitry in bi-directional OBCs. IC Role / Device Role / Timing Role: Provides isolated UART/SPI interface plus two dedicated control lines (e.g., soft-start enable, fault latch) using five forward + one reverse channel configuration. Use Value: Supports 100 Mbps data throughput for real-time telemetry and firmware updates without compromising 3000 VRMS reinforced insulation rating. | Use Scenario: Monitoring isolated output voltage/current sensors and controlling synchronous rectifier MOSFETs in high-efficiency 1kW DC/DC converters for ADAS domain controllers. IC Role / Device Role / Timing Role: Channels A–C isolate analog sensor outputs (via sigma-delta modulators), D–E handle gate drive enable/disable, F provides isolated power-good status. Use Value: Eliminates need for optocouplers or discrete capacitive isolators, reducing bill-of-materials count and improving long-term CMTI stability over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar six-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO7761FDWQRQ1 | Same functionality and specs, but in wide-SOIC (DW-16) package (10.3 mm × 7.5 mm); 5000 VRMS isolation rating. | Suitable for less space-constrained industrial inverters or test equipment where higher isolation voltage is prioritized over footprint. | Select when board layout allows larger package and 5000 VRMS barrier strength is required for >600V AC mains interfaces. |
| ADUM6630ARQZ-RL | Analog Devices' 6-channel isolator with integrated isolated DC/DC converter; lower data rate (25 Mbps), no AEC-Q100 qualification. | Used in non-automotive industrial PLCs where single-package isolation + power simplifies design but automotive reliability is not needed. | Choose only for non-automotive applications requiring integrated power; not suitable for ISO7761FQDBQRQ1's AEC-Q100 or 100 Mbps requirements. |
Compared with ISO7761FDWQRQ1, ISO7761FQDBQRQ1 trades 2000 VRMS isolation margin for 55% smaller PCB area - critical for compact OBC modules. Against ADUM6630ARQZ-RL, ISO7761FQDBQRQ1 delivers 4× higher speed and full automotive qualification, but requires external isolated power.
Availability
ISO7761FQDBQRQ1 is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and on-board chargers requiring stable component supply across automotive production lifecycles.
Supply support for ISO7761FQDBQRQ1 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 ICs, with decades of expertise in high-reliability isolation technology.
The ISO776x-Q1 family was designed specifically for functional safety-critical automotive powertrain and charging systems, emphasizing reinforced insulation, AEC-Q100 compliance, and electromagnetic robustness in high-noise 400V–800V EV architectures.
FAQ
What is the isolation voltage rating for ISO7761FQDBQRQ1?
The ISO7761FQDBQRQ1 has a 3000 VRMS isolation rating per UL 1577 when packaged in the SSOP (DBQ-16) form factor. This rating is validated for reinforced insulation and supports applications up to 400V DC bus systems. The device also achieves 12.8 kV surge capability and 8000 VPK transient isolation voltage per VDE 0884-17, making it suitable for demanding automotive powertrain environments where ISO7761FQDBQRQ1 must withstand repeated high-energy transients.
Does ISO7761FQDBQRQ1 support level translation between different supply voltages?
Yes, ISO7761FQDBQRQ1 supports true bidirectional level translation between 2.25V and 5.5V on each side - VCCI and VCCO can operate independently, enabling direct interfacing between a 3.3V microcontroller and a 5V isolated gate driver stage. This capability is inherent to the capacitive SiO₂ barrier architecture and is specified across all recommended operating conditions. Engineers designing with ISO7761FQDBQRQ1 benefit from eliminating external level shifters in mixed-voltage automotive subsystems.
How does the 'F' suffix in ISO7761FQDBQRQ1 affect output behavior?
The 'F' suffix in ISO7761FQDBQRQ1 denotes default-low output logic: when input-side power (VCC1) is lost or falls below UVLO threshold, all six outputs (OUTA–OUTF) transition to and hold a logic-low state. This fail-safe behavior is critical for automotive safety mechanisms - for example, ensuring gate drivers disable immediately during MCU brownout. Non-F variants default high; ISO7761FQDBQRQ1's F-suffix behavior is hardwired and cannot be changed via configuration pins or software.
Which safety standards does ISO7761FQDBQRQ1 comply with?
ISO7761FQDBQRQ1 is certified to multiple international safety standards: DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation, UL 1577 for component recognition, CSA 62368-1 and IEC 60601-1 for medical-grade isolation, CQC GB4943.1, and TUV EN 62368-1/EN 61010-1. These certifications validate its use in ASIL-B automotive systems and allow direct integration into functional safety architectures without additional barrier validation - a key advantage when qualifying ISO7761FQDBQRQ1 for production EV platforms.
Can ISO7761FQDBQRQ1 replace optocouplers in existing designs?
Yes, ISO7761FQDBQRQ1 can directly replace legacy optocouplers in six-channel isolation applications, offering superior performance: 100 Mbps vs. typical 1–10 Mbps opto speed, 11 ns propagation delay vs. 100+ ns opto latency, and guaranteed 30-year lifetime vs. LED degradation. However, pinout differs - ISO7761FQDBQRQ1 uses a fixed 16-pin SSOP layout with dedicated VCC1/VCC2 and GND1/GND2 pairs, requiring PCB redesign. Signal integrity improvements and reduced BOM count make ISO7761FQDBQRQ1 a compelling upgrade path where layout revision is feasible.
ISO7761FQDBQRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- CAN
- Isolated Power:
- No
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 5/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3000Vrms
- Common Mode Transient Immunity (Min):
- 85kV/µs
- Data Rate:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 16ns, 16ns
- Pulse Width Distortion (Max):
- 4.9ns
- Rise / Fall Time (Typ):
- 1.1ns, 1.4ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
ISO7761FQDBQRQ1 FAQ
1.How can I place an order for ISO7761FQDBQRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7761FQDBQRQ1 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 ISO7761FQDBQRQ1 reliable?
The price and inventory of ISO7761FQDBQRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7761FQDBQRQ1 is usually 5 days.
3.What payment methods are accepted for ISO7761FQDBQRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7761FQDBQRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7761FQDBQRQ1?
ISO7761FQDBQRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7761FQDBQRQ1 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 ISO7761FQDBQRQ1?
For technical support, including ISO7761FQDBQRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7761FQDBQRQ1 requirements.
6.How does Aetrix verify that ISO7761FQDBQRQ1 is sourced from the original manufacturer or authorized distributors?
All ISO7761FQDBQRQ1 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 ISO7761FQDBQRQ1 meets industry standards.
7.What is the process for return or replacement of ISO7761FQDBQRQ1?
All ISO7761FQDBQRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ISO7761FQDBQRQ1, 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 ISO7761FQDBQRQ1 part is unused and in its original packaging.
Return procedure for ISO7761FQDBQRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7761FQDBQRQ1 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
