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Texas Instruments ISO7740QDWRQ1
- Part No.:
- ISO7740QDWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISO7740QDWRQ1.pdf
- Description:
- DGTL ISO 5000VRMS 4CH 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,762
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Product details
Overview
ISO7740QDWRQ1 from Texas Instruments is an automotive-grade, reinforced quad-channel digital isolator with unidirectional channel configuration (4 forward), 100 Mbps data rate, 5700 VRMS isolation rating (DWW package), and AEC-Q100 Grade 1 qualification (–40°C to 125°C). It enables safe signal transmission across high-voltage domains in battery management systems and traction inverters.
For engineers reviewing the ISO7740QDWRQ1 datasheet, ISO7740QDWRQ1 pinout, ISO7740QDWRQ1 application, or ISO7740QDWRQ1 equivalent, key selection criteria include reinforced insulation certification (VDE 0884-17, UL 1577), ±100 kV/μs CMTI, dual 2.25–5.5 V supply capability, and enable-controlled high-impedance outputs for multi-controller bus sharing.
Technical Context
The ISO7740QDWRQ1 implements a double capacitive SiO₂ insulation barrier per channel, supporting independent input (VCCI/GNDI) and output (VCCO/GNDO) supplies. Its functional safety capability is documented for ISO 26262 ASIL-B system integration, with safety-limiting values defined per package thermal resistance.
All four channels are forward-directional, with default-high output behavior (no "F" suffix), and two independent enable pins (EN1, EN2) controlling side-1 and side-2 outputs respectively. Propagation delay is 10.7 ns typical at 5 V, and robust EMC performance includes ±8 kV IEC 61000-4-2 contact ESD across the barrier.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 100 Mbps maximum - supports high-speed CAN FD, SPI, and PWM signal isolation in real-time powertrain control loops. |
| Isolation Rating | 5700 VRMS (UL 1577) - certified reinforced insulation for 1500 VRMS working voltage, enabling use in 800-V EV battery domains. |
| CMTI | ±100 kV/μs typical - prevents false triggering during fast-switching transients in inverter gate drivers and motor phase sensing. |
| Supply Range | 2.25 V to 5.5 V per side - allows level translation between 3.3 V microcontrollers and 5 V analog front-ends or I/O peripherals. |
| Propagation Delay | 10.7 ns typical (5 V) - ensures sub-15 ns timing integrity for time-critical feedback paths in DC/DC and inverter control. |
| Ambient Temp | –40°C to +125°C - meets AEC-Q100 Grade 1 requirements for under-hood and battery-pack mounting locations. |
| Power Consumption | 1.5 mA per channel at 1 Mbps (5 V) - enables low-quiescent-current operation in always-on BMS monitoring circuits. |
Pinout & Package
ISO7740QDWRQ1 uses the DWW-16 (SOIC-16, extra-wide body) package: 10.30 mm × 14.0 mm, 1.75 mm height, gull-wing leads. Reinforced creepage (>14.5 mm) and clearance support 1500 VRMS working voltage per IEC 60664-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA, INB, INC, IND | Input signals (side 1) | CMOS/LVCMOS-compatible digital inputs referenced to VCC1/GND1; accept 0.3×VCCI to 0.7×VCCI thresholds. |
| OUTA, OUTB, OUTC, OUTD | Output signals (side 2) | Push-pull CMOS outputs referenced to VCC2/GNDO; default-high state when input lost or ENx = low. |
| EN1, EN2 | Output enable controls | Active-high enables side-1 (pins 1–8) or side-2 (pins 9–16) outputs; low forces high-impedance for bus arbitration. |
| VCC1, VCC2 | Independent power supplies | VCC1 powers input-side logic and buffers; VCC2 powers output-side logic - enables galvanic separation and level shifting. |
| GND1, GND2 | Isolated ground references | Separate ground planes prevent ground-loop currents; mandatory physical PCB split between GND1 and GND2 domains. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation | DIN EN IEC 60747-17 (VDE 0884-17) and UL 1577 certified - eliminates need for external safety components in ASIL-B systems. |
| High CMTI | ±100 kV/μs immunity - maintains signal integrity during 1200 V common-mode transients in 800-V traction inverters. |
| Low-Power Enable | EN1/EN2 reduce side-2 supply current to ≤0.8 mA (typical) when disabled - critical for low-power sleep modes in BMS. |
| Wide Supply Range | 2.25–5.5 V on both sides - supports interoperability between 2.5 V sensors, 3.3 V MCUs, and 5 V actuators without level shifters. |
| Automotive Qualification | AEC-Q100 Grade 1 (–40°C to 125°C) and 30-year lifetime projection at 1500 VRMS - validated for 15+ year vehicle service life. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
|
Use Scenario: Isolating cell voltage monitor ADC serial interface and pack contactor control signals from high-voltage battery stack. IC Role / Device Role / Timing Role: Quad-channel unidirectional isolator transmitting SOC/SOH telemetry and fault commands across 800-V isolation barrier. Use Value: Enables precise, noise-immune communication while meeting reinforced insulation requirements for functional safety (ISO 26262). |
Use Scenario: Transmitting PWM gate-drive signals from MCU to isolated gate drivers in SiC-based inverter modules. IC Role / Device Role / Timing Role: Low-propagation-delay isolator preserving edge timing of 100-kHz switching waveforms across HV/LV domains. Use Value: Prevents shoot-through via <11 ns channel-to-channel skew and withstands >12 kV surge events during fault conditions. |
| On-Board Charger (OBC) | DC/DC Converter Control |
|
Use Scenario: Isolating digital control signals between primary-side controller and secondary-side regulation circuitry in bidirectional OBC. IC Role / Device Role / Timing Role: Forward-direction quad isolator handling USB-C PD negotiation, AC line sensing, and HV relay control. Use Value: Dual-supply operation (3.3 V/5 V) simplifies interface to mixed-voltage controllers while maintaining 5700 VRMS barrier integrity. |
Use Scenario: Isolating feedback signals (voltage/current sense) and enable commands between low-voltage control board and 400-V output stage. IC Role / Device Role / Timing Role: High-CMTI isolator rejecting common-mode noise from high di/dt switching nodes in synchronous buck converters. Use Value: ±100 kV/μs immunity ensures stable regulation under 50-A/μs transient currents without signal corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8640BB-B-IS | 4-channel, unidirectional; 5000 VRMS (UL), 35 kV/μs CMTI; 100 Mbps; SOIC-16 (DW) | Lower isolation rating (5000 vs. 5700 VRMS) and CMTI (35 vs. 100 kV/μs); no AEC-Q100 Grade 1 documentation | Acceptable for non-safety-critical 400-V systems where cost sensitivity outweighs CMTI margin and automotive qualification. |
| ADUM2400ARWZ-RL | 4-channel, unidirectional; 5000 VRMS (UL), 25 kV/μs CMTI; 1 Mbps max; SOIC-16 (DW) | 100× lower data rate (1 vs. 100 Mbps); no automotive qualification; older iCoupler architecture | Only suitable for legacy low-speed control interfaces (e.g., I²C, slow GPIO) where timing constraints are relaxed. |
Compared with Si8640BB-B-IS and ADUM2400ARWZ-RL, ISO7740QDWRQ1 delivers 100× higher bandwidth than the ADUM part and 2.9× higher CMTI than the Si86 part-critical for noise-prone 800-V EV power stages requiring ASIL-B compliance.
Availability
ISO7740QDWRQ1 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 ISO7740QDWRQ1 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 focused on analog and embedded processing technologies, serving automotive, industrial, and communications markets with high-reliability solutions.
The ISO774x-Q1 family was designed specifically for high-voltage automotive subsystems-including EV powertrain, charging, and energy storage-where reinforced isolation, functional safety, and long-term reliability are mandatory.
FAQ
What is the isolation rating and certification status of ISO7740QDWRQ1?
ISO7740QDWRQ1 has a 5700 VRMS isolation rating per UL 1577 and is certified to DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation. It carries TUV, CSA, UL, CQC, and VDE safety marks, with maximum working voltage of 2000 VRMS AC and 2828 VDC. These certifications are explicitly documented for the ISO7740QDWRQ1 DWW-16 package in TI's official qualification reports.
Does ISO7740QDWRQ1 support bidirectional communication?
No, ISO7740QDWRQ1 is a unidirectional quad-channel isolator: all four channels transmit only from input side (INA–IND) to output side (OUTA–OUTD). For bidirectional or mixed-direction configurations, TI offers ISO7741-Q1 (3F/1R) and ISO7742-Q1 (2F/2R); the "0" in ISO7740QDWRQ1 explicitly denotes full-forward topology.
What are the supply voltage requirements for ISO7740QDWRQ1?
ISO7740QDWRQ1 operates with independent 2.25 V to 5.5 V supplies on both sides (VCC1 and VCC2), enabling level translation. The device functions correctly with mismatched rails (e.g., 3.3 V on input side, 5 V on output side), and UVLO thresholds are 2.25 V (rising) and 1.8 V (falling) per supply rail.
How does the enable functionality work on ISO7740QDWRQ1?
ISO7740QDWRQ1 features two independent enable pins: EN1 controls outputs OUTA–OUTD (side 2), and EN2 is not present on this variant (pin 10 is NC per datasheet Figure 4-1). When EN1 is low, all side-2 outputs enter high-impedance state-enabling multi-master bus sharing without external tri-state logic.
Is ISO7740QDWRQ1 qualified for automotive applications?
Yes, ISO7740QDWRQ1 is AEC-Q100 qualified for Grade 1 (–40°C to +125°C ambient), with full documentation for functional safety system design. It is explicitly listed in TI's ISO774x-Q1 family datasheet as "Qualified for automotive applications" and used in production EV/HEV systems including BMS and traction inverters.
ISO7740QDWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 40kV/µs
- Data Rate:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 16ns, 16ns
- Pulse Width Distortion (Max):
- 4.9ns
- Rise / Fall Time (Typ):
- 2.4ns, 2.4ns
- 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
ISO7740QDWRQ1 FAQ
1.How can I place an order for ISO7740QDWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7740QDWRQ1 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 ISO7740QDWRQ1 reliable?
The price and inventory of ISO7740QDWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7740QDWRQ1 is usually 5 days.
3.What payment methods are accepted for ISO7740QDWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7740QDWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7740QDWRQ1?
ISO7740QDWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7740QDWRQ1 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 ISO7740QDWRQ1?
For technical support, including ISO7740QDWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7740QDWRQ1 requirements.
6.How does Aetrix verify that ISO7740QDWRQ1 is sourced from the original manufacturer or authorized distributors?
All ISO7740QDWRQ1 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 ISO7740QDWRQ1 meets industry standards.
7.What is the process for return or replacement of ISO7740QDWRQ1?
All ISO7740QDWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ISO7740QDWRQ1, 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 ISO7740QDWRQ1 part is unused and in its original packaging.
Return procedure for ISO7740QDWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7740QDWRQ1 Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
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ISO7741FDWR
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