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Texas Instruments ISO7761QDWQ1
- Part No.:
- ISO7761QDWQ1
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISO7761QDWQ1.pdf
- Description:
- DGTL ISO 5000VRMS 6CH 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,148
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Product details
Overview
ISO7761QDWQ1 from Texas Instruments is a six-channel reinforced digital isolator for automotive systems, delivering 100Mbps data rate, ±100kV/μs CMTI, and 5000VRMS isolation (DW package). It operates across 2.25V–5.5V supply rails with level translation and features default-high output logic. Used in battery management and traction inverters where high-noise immunity and functional safety compliance are critical.
For engineers reviewing the ISO7761QDWQ1 datasheet, ISO7761QDWQ1 pinout, ISO7761QDWQ1 application, or ISO7761QDWQ1 equivalent, this page provides verified technical context, validated pin functions, automotive-grade safety certifications (AEC-Q100 Grade 1, VDE 0884-17, UL 1577), and real-world implementation guidance for EV powertrain subsystems.
Technical Context
The ISO7761QDWQ1 implements dual capacitive SiO₂ isolation barriers per channel, enabling reinforced insulation with >30-year lifetime projection and 12.8kV surge capability. Its architecture supports asymmetric supply operation (VCCI ≠ VCCO) and bidirectional level translation between 2.25V and 5.5V domains.
Unlike ISO7760-Q1 (all-forward channels) or ISO7762-Q1/ISO7763-Q1 (mixed-direction configurations), ISO7761QDWQ1 has one reverse-direction channel (INF→OUTF) and five forward-direction channels (INA→OUTA through INE→OUTE), as confirmed by Figure 5-2 and Table 5-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 100 Mbps maximum - enables high-speed CAN FD, SPI, and PWM signal isolation in real-time EV control loops. |
| Isolation Rating | 5000 VRMS (UL 1577) - meets reinforced insulation requirements for 400V+ battery systems and traction inverters. |
| CMTI | ±100 kV/μs typical - rejects fast transients from IGBT switching noise in motor drives without signal corruption. |
| Supply Range | 2.25 V to 5.5 V on both sides - allows direct interfacing with 3.3V microcontrollers and 5V analog/sensor domains. |
| Propagation Delay | 11 ns typical at 5V - ensures timing-critical feedback paths (e.g., gate driver enable/disable) remain sub-20ns end-to-end. |
| Ambient Temp Range | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and battery-pack mounting locations. |
| EMC Immunity | ±8 kV IEC 61000-4-2 contact discharge across barrier - eliminates external TVS diodes in compact BMS PCB layouts. |
Pinout & Package
ISO7761QDWQ1 uses the Wide-SOIC (DW-16) package: 10.30 mm × 7.50 mm body size, 10.30 mm × 10.30 mm overall footprint including leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | VCC1, VCC2 | Independent input-side and output-side power supplies - enables galvanic separation of MCU domain (VCC1) and high-voltage domain (VCC2). |
| 2–7 | INA, INB, INC, IND, INE, INF | Logic inputs for six isolated channels - INF is reverse-direction (output side → input side), others are forward-direction. |
| 10–15 | OUTF, OUTE, OUTD, OUTC, OUTB, OUTA | Corresponding logic outputs - pin order matches reversed channel mapping: INF→OUTF, INE→OUTE, etc., per Figure 5-2. |
| 8, 9 | GND1, GND2 | Input-side and output-side ground references - must be routed on separate PCB planes to maintain isolation integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Insulation Certification | DIN EN IEC 60747-17 (VDE 0884-17), UL 1577, CSA IEC 62368-1 - satisfies ASIL-B/C system-level functional safety requirements without additional barrier validation. |
| Robust EMC Architecture | System-level ESD/EFT/surge immunity achieved via chip-level layout optimization - reduces need for board-level filtering in space-constrained EV modules. |
| Low-Power Operation | 1.4 mA per channel at 1 Mbps - extends runtime in always-on BMS monitoring circuits powered from low-quiescent DC/DC converters. |
| Fail-Safe Default State | Outputs default HIGH when input power is lost - prevents undefined states in safety-critical enable lines (e.g., inverter gate driver disable). |
| Wide Temperature Stability | Specified performance maintained from –40°C to +125°C ambient - avoids derating or thermal shutdown in engine bay or battery pack environments. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
|
Use Scenario: Isolating cell voltage monitor ADC serial interface and pack contactor control signals in 400–800V EV battery packs. IC Role / Device Role / Timing Role: Six-channel isolator separates MCU SPI bus (side 1) from high-side sensing ICs and precharge/disconnect relays (side 2). Use Value: 5000VRMS rating withstands full pack voltage transients; 100Mbps supports fast cell balancing command updates without latency bottlenecks. |
Use Scenario: Transmitting PWM gate drive signals and fault feedback from IGBT/SiC drivers to vehicle controller in electric axle assemblies. IC Role / Device Role / Timing Role: Provides timing-aligned isolation for three-phase upper/lower gate signals plus two status lines (DESAT, UVLO) with matched propagation delay. Use Value: 11ns typical delay and ±100kV/μs CMTI prevent shoot-through during high-dV/dt switching events in 10kHz+ inverters. |
| On-Board Charger (OBC) | DC/DC Converter Control |
|
Use Scenario: Isolating digital control signals between low-voltage MCU and high-voltage AC/DC stage in bi-directional OBC modules. IC Role / Device Role / Timing Role: Transfers PFC and LLC controller commands (e.g., frequency, phase shift) while blocking common-mode noise from rectified AC line. Use Value: ±8kV IEC 61000-4-2 contact discharge immunity eliminates need for external ESD protection on isolated control lines. |
Use Scenario: Isolating feedback signals (voltage/current sense, temperature) and enable commands in 48V–12V or 400V–48V DC/DC converters for ADAS domain controllers. IC Role / Device Role / Timing Role: Routes analog sensor data (via isolated sigma-delta modulators) and digital enable/disable commands across isolation boundary. Use Value: 2.25V–5.5V dual-supply support interfaces directly with 3.3V MCU I/O and 5V isolated ADCs without level-shifter components. |
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 |
|---|---|---|---|
| ISO7761FDWQ1 | Same pinout and specs, but default-low output state (F suffix) instead of default-high. | Required where fail-safe logic demands LOW output on power loss (e.g., active-low enable for safety shutoff). | Select ISO7761FDWQ1 only when system architecture mandates active-low default behavior; otherwise ISO7761QDWQ1 is preferred for high-enable safety paths. |
| ADUM7641ARQZ | 6-channel, 100Mbps, 3750VRMS (not reinforced), SOIC-16, but lacks AEC-Q100 qualification and VDE/UL reinforced certification. | Suitable for industrial non-automotive applications; not compliant for ASIL-B systems or high-voltage EV subsystems requiring reinforced insulation. | Use ADUM7641ARQZ only in non-automotive designs where 3750VRMS basic insulation suffices and functional safety certification is not required. |
Compared with ISO7761FDWQ1, ISO7761QDWQ1 provides fail-safe HIGH default for critical enable signals; compared with ADUM7641ARQZ, it delivers certified reinforced isolation and AEC-Q100 Grade 1 reliability essential for automotive powertrain deployment.
Availability
ISO7761QDWQ1 is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and on-board chargers requiring stable component supply with automotive-grade traceability and long-term lifecycle support.
Supply support for ISO7761QDWQ1 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-compliant EV/HEV powertrain systems, emphasizing robust EMC, reinforced insulation, and AEC-Q100 qualification from the silicon level upward.
FAQ
What is the isolation rating and certification status of ISO7761QDWQ1?
ISO7761QDWQ1 provides 5000VRMS reinforced isolation per UL 1577 and is certified to DIN EN IEC 60747-17 (VDE 0884-17), CSA IEC 62368-1, and TUV EN 62368-1. It meets AEC-Q100 Grade 1 (–40°C to +125°C) and supports 12.8kV surge immunity - making it suitable for high-voltage automotive subsystems like battery packs and inverters.
How does ISO7761QDWQ1 differ from ISO7760QDWQ1 and ISO7762QDWQ1?
ISO7761QDWQ1 has one reverse-direction channel (INF→OUTF) and five forward-direction channels. ISO7760QDWQ1 has all six channels forward, while ISO7762QDWQ1 has two reverse and four forward. Pin mapping differs accordingly - ISO7761QDWQ1 uses the configuration shown in Figure 5-2, which affects PCB layout and signal routing in multi-channel isolation schemes.
What is the default output state of ISO7761QDWQ1 during power loss?
ISO7761QDWQ1 defaults to HIGH output state when input power (VCCI) is lost or invalid. This fail-safe behavior ensures that critical enable signals (e.g., to gate drivers or contactors) de-assert safely in fault conditions - a key requirement for ASIL-B/C system design per ISO 26262.
Does ISO7761QDWQ1 support level translation between different supply voltages?
Yes, ISO7761QDWQ1 supports independent 2.25V–5.5V supplies on each side (VCCI and VCCO), enabling seamless level translation - for example, interfacing a 3.3V automotive MCU with 5V isolated ADCs or sensor interfaces without external level shifters.
What package options are available for ISO7761QDWQ1, and what is its thermal resistance?
ISO7761QDWQ1 is offered exclusively in the Wide-SOIC (DW-16) package. Its junction-to-ambient thermal resistance (RθJA) is 60.3°C/W on a high-K test board. This value informs thermal design for continuous 100Mbps operation in sealed enclosures - especially important in high-power density applications like OBC and DC/DC modules.
ISO7761QDWQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 5/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- 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-SOIC
ISO7761QDWQ1 FAQ
1.How can I place an order for ISO7761QDWQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7761QDWQ1 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 ISO7761QDWQ1 reliable?
The price and inventory of ISO7761QDWQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7761QDWQ1 is usually 5 days.
3.What payment methods are accepted for ISO7761QDWQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7761QDWQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7761QDWQ1?
ISO7761QDWQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7761QDWQ1 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 ISO7761QDWQ1?
For technical support, including ISO7761QDWQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7761QDWQ1 requirements.
6.How does Aetrix verify that ISO7761QDWQ1 is sourced from the original manufacturer or authorized distributors?
All ISO7761QDWQ1 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 ISO7761QDWQ1 meets industry standards.
7.What is the process for return or replacement of ISO7761QDWQ1?
All ISO7761QDWQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ISO7761QDWQ1, 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 ISO7761QDWQ1 part is unused and in its original packaging.
Return procedure for ISO7761QDWQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7761QDWQ1 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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