My Inquiry
My Account
Texas Instruments ISO7761QDBQRQ1
- Part No.:
- ISO7761QDBQRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ISO7761QDBQRQ1.pdf
- Description:
- DGTL ISO 3000VRMS 6CH 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,058
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISO7761QDBQRQ1 from Texas Instruments is a six-channel reinforced digital isolator for automotive systems, featuring 100Mbps data rate, ±100kV/μs CMTI, 5000VRMS isolation (DW package) / 3000VRMS (DBQ package), and AEC-Q100 Grade 1 qualification (–40°C to +125°C). It enables signal integrity in high-noise EV powertrain interfaces such as BMS and traction inverters.
For engineers reviewing the ISO7761QDBQRQ1 datasheet, ISO7761QDBQRQ1 pinout, ISO7761QDBQRQ1 application, or ISO7761QDBQRQ1 equivalent, key selection criteria include reinforced insulation certification (VDE 0884-17, UL 1577), dual-supply level translation (2.25V–5.5V), default-high output logic, and SSOP-16 package compatibility with system-level ESD/EFT/surge immunity requirements.
Technical Context
The ISO7761QDBQRQ1 implements six independent bidirectional-capable channels using double capacitive SiO₂ isolation barriers, with input and output sides fully galvanically separated (VCCI/GNDI vs. VCCO/GNDO). Its architecture supports asymmetric supply operation - VCCI and VCCO may differ within 2.25V–5.5V - enabling level-shifting between disparate logic domains without external components.
Unlike ISO7760-Q1 (all-forward), ISO7761-Q1 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. This pinout configuration optimizes signal routing in CAN/LIN bus interface and gate driver feedback paths where direction reversal is required on a single channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 100 Mbps maximum - supports high-speed serial communication in EV battery monitoring and motor control loops. |
| Isolation Rating | 3000 VRMS (UL 1577, DBQ-16 package) - meets reinforced insulation requirements for automotive safety-critical subsystems. |
| CMTI | ±100 kV/μs typical - rejects fast transients common in traction inverter switching noise environments. |
| Supply Range | 2.25 V to 5.5 V per side - enables interoperability with 3.3V microcontrollers and 5V analog front-ends without level shifters. |
| Propagation Delay | 11 ns typical at 5 V - ensures timing-critical feedback paths (e.g., IGBT desaturation detection) remain sub-20 ns 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. |
| ESD Protection | ±8 kV contact discharge (IEC 61000-4-2) across barrier - protects isolated CAN/LIN transceivers from system-level ESD events. |
Pinout & Package
ISO7761QDBQRQ1 uses the SSOP-16 (DBQ) package: 4.90 mm × 3.90 mm body, 4.90 mm × 6.00 mm overall footprint, 1.00 mm max height, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC1 (Pin 1) | Input-side power supply | Supplies logic for INA–INF inputs and internal input buffer; must be decoupled locally. |
| INA–INF (Pins 2–7) | Digital input terminals | Logic-level inputs referenced to GND1; INF is reverse-direction channel input (maps to OUTF). |
| GND1 (Pin 8) | Input-side ground reference | Return path for VCC1 and all input signals; must be separated from GND2 by isolation barrier. |
| GND2 (Pin 9) | Output-side ground reference | Return path for VCC2 and all output signals; forms isolated domain with VCC2. |
| OUTF–OUTA (Pins 10–15) | Digital output terminals | Logic-level outputs referenced to GND2; OUTF is reverse-direction (driven by INF), others forward. |
| VCC2 (Pin 16) | Output-side power supply | Supplies logic for OUTA–OUTF outputs and internal output buffer; enables independent voltage domain. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced insulation certification | VDE 0884-17, UL 1577, CSA IEC 62368-1, CQC GB4943.1 - enables compliance in ASIL-B/C automotive safety architectures. |
| Default-high output state | Outputs drive high when input power or signal is lost - prevents undefined states in fault-tolerant BMS monitoring circuits. |
| Robust EMC performance | System-level ESD/EFT/surge immunity per IEC 61000-4-x - reduces need for external protection components in noisy powertrain PCBs. |
| Low-power operation | 1.4 mA per channel at 1 Mbps - extends runtime in always-on vehicle subsystems like battery wake-up monitors. |
| Wide temperature lifetime | 30-year projected isolation barrier life at 125°C ambient - validated for long-term reliability in sealed EV battery enclosures. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
Use Scenario: Isolating cell voltage measurement ADC SPI interfaces from high-voltage battery stack. IC Role / Device Role / Timing Role: Six-channel isolator separates MCU SPI clock/MOSI/MISO/CS lines while maintaining <11 ns propagation delay for synchronized sampling. Use Value: Enables accurate, noise-immune 16-bit cell voltage acquisition in 800V battery packs with >100 kV/μs common-mode rejection. | Use Scenario: Transmitting PWM gate drive signals and desaturation feedback from inverter controller to IGBT/SiC modules. IC Role / Device Role / Timing Role: Forward-path channels carry PWM commands; reverse-path channel (INF/OUTF) returns desat flag with matched delay. Use Value: Guarantees <22 ns total loop delay for overcurrent shutdown, meeting IEC 62109 response time requirements. |
| On-board Charger (OBC) | DC/DC Converter Monitoring |
Use Scenario: Isolating digital control signals between primary-side controller and secondary-side telemetry in bidirectional OBCs. IC Role / Device Role / Timing Role: Provides galvanic separation for UART, GPIO, and fault signaling across 400–800V DC-DC boundaries. Use Value: Eliminates ground-loop interference in isolated CAN communication between OBC and vehicle ECU. | Use Scenario: Monitoring output voltage/current sense signals in high-frequency LLC resonant DC/DC converters. IC Role / Device Role / Timing Role: Transfers analog sensor ADC outputs across isolation barrier using SPI or parallel digital encoding. Use Value: Maintains 12-bit measurement accuracy despite >50 V/μs dV/dt transients on converter primary side. |
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 | SOIC-16 (DW) package; 5000 VRMS isolation rating; identical pinout and electrical specs except package and isolation voltage. | Suitable for higher-isolation applications (e.g., main battery disconnect monitoring) where board space allows larger SOIC footprint. | Select when 5000 VRMS reinforced isolation is required and PCB layout accommodates 10.3 mm × 10.3 mm DW package. |
| ADUM6601ARIZ-RL | Analog Devices part; 50 Mbps max data rate; integrated isolated DC-DC converter; different pinout; no AEC-Q100 qualification. | Used where isolated power + signal is needed in non-automotive industrial systems; not suitable for ASIL-rated automotive designs. | Choose only for non-automotive applications requiring on-chip isolated power; not a drop-in replacement due to speed, qualification, and integration differences. |
Compared with ISO7761FDWQRQ1, ISO7761QDBQRQ1 trades 2000 VRMS lower isolation for 35% smaller PCB area and improved thermal resistance in compact OBC modules; versus ADUM6601ARIZ-RL, it delivers 2× data rate and automotive qualification but requires external isolated power.
Availability
ISO7761QDBQRQ1 is available at Aetrix Electronics and suitable for battery management systems, traction inverters, on-board chargers, and DC/DC converters requiring stable component supply for automotive production programs.
Supply support for ISO7761QDBQRQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive-grade isolation, power management, and signal chain solutions.
The ISO776x-Q1 family was designed specifically for high-reliability automotive electrification systems, delivering reinforced isolation, robust EMC immunity, and AEC-Q100 qualification for EV/HEV powertrain control and monitoring.
FAQ
What is the isolation voltage rating of ISO7761QDBQRQ1?
The ISO7761QDBQRQ1 has a UL 1577-rated isolation voltage of 3000 VRMS, verified for the DBQ-16 SSOP package. This rating applies to reinforced insulation and is supported by VDE 0884-17 certification (VIORM = 566 VPK, VIOWM = 400 VRMS). The DW-16 SOIC variant offers 5000 VRMS, but ISO7761QDBQRQ1 specifically uses the DBQ package and its associated 3000 VRMS rating.
Does ISO7761QDBQRQ1 support level translation between different supply voltages?
Yes, ISO7761QDBQRQ1 supports independent 2.25V–5.5V supplies on input (VCC1/GND1) and output (VCC2/GNDO) sides, enabling true bidirectional level translation. For example, it can interface a 3.3V MCU SPI bus to a 5V analog front-end while maintaining signal integrity and timing - a capability confirmed in Section 6.3 Recommended Operating Conditions and Figure 5-2 pin mapping.
What is the default output state of ISO7761QDBQRQ1 during power loss?
The ISO7761QDBQRQ1 has a default-high output configuration: when input-side power (VCC1) or input signals are lost, all six outputs (OUTA–OUTF) drive logic high. This behavior is intrinsic to the "no-F" suffix variant and is documented in the Device Functional Modes section - critical for fail-safe design in BMS voltage monitoring where open-circuit detection relies on known default states.
How does the pin configuration of ISO7761QDBQRQ1 differ from ISO7760QDBQRQ1?
ISO7761QDBQRQ1 features one reverse-direction channel (INF → OUTF) and five forward-direction channels (INA → OUTA through INE → OUTE), as shown in Figure 5-2 and Table 5-1. In contrast, ISO7760QDBQRQ1 has all six channels forward (INA → OUTA through INF → OUTF). This directional split enables asymmetric signal routing - e.g., sending control signals forward while returning fault flags in reverse - without external logic inversion.
Is ISO7761QDBQRQ1 certified for functional safety applications?
Yes, ISO7761QDBQRQ1 is functional safety-capable with documentation available to aid ISO 26262 ASIL-B/C system design. It holds VDE 0884-17 (reinforced insulation), UL 1577, CSA IEC 62368-1, and CQC GB4943.1 certifications, and TI provides safety manuals covering failure modes, FIT rates, and diagnostic coverage - making ISO7761QDBQRQ1 suitable for safety-critical automotive subsystems including battery disconnect units and inverter safety monitors.
ISO7761QDBQRQ1 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
ISO7761QDBQRQ1 FAQ
1.How can I place an order for ISO7761QDBQRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7761QDBQRQ1 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 ISO7761QDBQRQ1 reliable?
The price and inventory of ISO7761QDBQRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7761QDBQRQ1 is usually 5 days.
3.What payment methods are accepted for ISO7761QDBQRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7761QDBQRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7761QDBQRQ1?
ISO7761QDBQRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7761QDBQRQ1 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 ISO7761QDBQRQ1?
For technical support, including ISO7761QDBQRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7761QDBQRQ1 requirements.
6.How does Aetrix verify that ISO7761QDBQRQ1 is sourced from the original manufacturer or authorized distributors?
All ISO7761QDBQRQ1 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 ISO7761QDBQRQ1 meets industry standards.
7.What is the process for return or replacement of ISO7761QDBQRQ1?
All ISO7761QDBQRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ISO7761QDBQRQ1, 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 ISO7761QDBQRQ1 part is unused and in its original packaging.
Return procedure for ISO7761QDBQRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7761QDBQRQ1 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…
