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Texas Instruments ISO7841DWR
- Part No.:
- ISO7841DWR
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISO7841DWR.pdf
- Description:
- DGTL ISO 5700VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,795
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Product details
Overview
ISO7841DWR from Texas Instruments is a reinforced quad-channel digital isolator with 8000VPK isolation voltage, three forward and one reverse signal channels, ±100 kV/μs CMTI, 11 ns typical propagation delay at 5V, and operation across –55°C to 125°C for industrial motor control and solar inverter gate drive interfaces.
For engineers reviewing the ISO7841DWR datasheet, ISO7841DWR pinout, ISO7841DWR application, or ISO7841DWR equivalent, this page delivers verified channel configuration, safety-certified insulation parameters, supply-voltage-flexible I/O level translation (2.25–5.5 V), and real-world EMC performance data per VDE 0884-17, UL 1577, and IEC 60601-1.
Technical Context
The ISO7841DWR implements capacitive SiO2 isolation with three unidirectional (forward) and one bidirectional-capable (reverse) channel architecture, enabling asymmetric signal routing between isolated domains. Its enable pins (EN1, EN2) support high-impedance output states for multi-controller bus sharing and dynamic power reduction.
It delivers reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17) with 8000VPK transient voltage rating and 5.7 kVRMS withstand, alongside system-level ESD (±6 kV HBM), EFT, and surge immunity - validated under 12.8 kV surge testing and low 2 pF barrier capacitance for minimal noise coupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 8000VPK reinforced per VDE 0884-17; enables safe operation in 1000VRMS AC mains-connected systems (e.g., grid-tied inverters) |
| Signaling Rate | 100 Mbps maximum; supports high-speed serial interfaces like SPI clock lines and PWM feedback in motor drives |
| Propagation Delay | 11 ns typical at 5V; ensures sub-20 ns timing integrity for closed-loop control loops requiring <50 ns total latency |
| CMTI | ±100 kV/μs minimum; prevents false triggering during fast-switching transients in SiC/GaN power stages |
| Supply Range | 2.25 V to 5.5 V on both sides; allows direct interfacing with 3.3 V microcontrollers and 5 V FPGA I/O without level shifters |
| Operating Temp | –55°C to 125°C ambient; qualified for under-hood automotive and outdoor solar inverter environments |
| Power @ 1 Mbps | 1.7 mA per channel typical; enables ultra-low-power isolated sensing in battery-backed industrial controllers |
Pinout & Package
ISO7841DWR uses a wide-body SOIC-16 (DW) package measuring 10.30 mm × 10.30 mm with 1.27 mm pitch, optimized for >8 mm creepage/clearance and reinforced isolation integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC1, GND1 | Input-side power domain | Supplies logic side (INx, EN1); independent of output domain for true galvanic separation |
| VCC2, GND2 | Output-side power domain | Supplies isolated side (OUTx, EN2); enables level translation and noise decoupling |
| INA–IND | Digital input terminals | Four CMOS/LVCMOS-compatible inputs; channels A–C are forward, D is reverse-direction |
| OUTA–OUTD | Digital output terminals | Corresponding isolated outputs; default state is high for ISO7841 (including ISO7841DWR) |
| EN1, EN2 | Output enable controls | Active-high enables; pull-up or open-circuit enables outputs; critical for bus arbitration in multi-master systems |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation Certification | UL 1577 (5.7 kVRMS), VDE 0884-17 (8000 VPK), CSA/IEC 60950-1 & 60601-1 - certified for medical and industrial safety-critical use |
| Low EMI Barrier | 2 pF input-to-output capacitance and robust EMC design reduce radiated emissions and improve system-level CISPR 32 compliance |
| Fail-Safe Default Output | Outputs default high upon input-side power loss - enables safe shutdown in motor control gate drivers when controller fails |
| Multi-Voltage Level Translation | 2.25–5.5 V operation on both sides allows seamless interface between 1.8 V logic and 5 V analog subsystems without external translators |
| High-Temp Reliability | 40+ year isolation barrier life at 125°C ambient - validated for long-lifecycle deployments in solar farms and factory automation |
Applications
| Industrial Motor Drives | Solar Inverters |
|---|---|
Use Scenario: Isolating PWM signals and fault feedback between MCU and IGBT/SiC gate drivers in variable-frequency drives. IC Role / Device Role / Timing Role: Quad-channel isolator providing three forward PWM paths and one reverse fault-reporting path with <20 ns skew. Use Value: Enables precise timing-critical gate control while blocking 1000 VRMS common-mode transients from power stage switching noise. | Use Scenario: Signal isolation between DC-link voltage sensors and MPPT controller in string inverters operating at 1500 V DC. IC Role / Device Role / Timing Role: Reinforced isolator handling high-voltage sensor data and control commands across 8000 VPK barrier with ±100 kV/μs CMTI. Use Value: Meets IEC 62109 and UL 1741 requirements for photovoltaic system safety without external protection components. |
| Medical Imaging Power Supplies | Hybrid Electric Vehicle Battery Management |
Use Scenario: Isolating digital control signals in MRI/X-ray generator power supplies where patient isolation is mandatory. IC Role / Device Role / Timing Role: Dual-domain isolator supporting 2 MOPP (Means of Patient Protection) per IEC 60601-1 with 250 VRMS working voltage. Use Value: Eliminates need for additional isolation barriers in high-reliability diagnostic equipment meeting TUV EN 62368-1 certification. | Use Scenario: Communicating cell voltage monitoring data and charge/discharge commands across high-voltage battery packs (up to 800 V). IC Role / Device Role / Timing Role: High-CMTI isolator linking BMS microcontroller to isolated ADCs and contactor drivers in EV traction battery stacks. Use Value: Prevents ground loop errors and ensures functional safety integrity per ISO 26262 ASIL-B requirements with validated 40-year barrier life. |
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 |
|---|---|---|---|
| ADUM2401ARWZ | 5 kVRMS reinforced isolation; 25 Mbps max rate; 35 ns propagation delay; SOIC-16 package | Limited to lower-speed industrial PLC I/O modules; not rated for 1000 VRMS mains or medical 2-MOPP | Choose ADUM2401ARWZ only if speed and CMTI requirements are relaxed and cost sensitivity outweighs safety certification depth. |
| SI8641ED-B-IS | 5 kVRMS reinforced; 150 Mbps; 10 ns propagation delay; 2.5–5.5 V supply; SOIC-16 | Lacks VDE 0884-17 certification and 8000 VPK rating; no CSA 60601-1 or TUV EN 62368-1 approval | Select SI8641ED-B-IS for high-speed non-safety-critical data links where regulatory alignment with ISO7841DWR is not required. |
Compared with ADUM2401ARWZ and SI8641ED-B-IS, ISO7841DWR uniquely combines 8000 VPK VDE-certified reinforced isolation, 100 Mbps signaling, and full medical/industrial safety approvals - making it the only option qualified for 1500 V DC solar inverters and Class II medical power supplies without derating or additional certification effort.
Availability
ISO7841DWR is available at Aetrix Electronics and suitable for industrial motor control, solar inverter gate drive, and medical imaging power supply designs requiring stable component supply, long-term lifecycle assurance, and certified reinforced isolation.
Supply support for ISO7841DWR 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 high-reliability isolation technologies with over 50 years of innovation in precision signal chain and power management solutions.
The ISO7841x family was designed specifically for high-noise, high-voltage industrial and medical systems requiring certified reinforced isolation, low-latency communication, and robust EMC performance - targeting motor drives, renewable energy converters, and safety-critical power supplies.
FAQ
What is the default output state of ISO7841DWR upon input-side power loss?
The ISO7841DWR defaults to high on all outputs when input-side power (VCC1) drops below 1.7 V. This fail-safe behavior is confirmed in the Device Functional Modes section of the datasheet and ensures safe shutdown in motor control applications where high output disables gate drivers. The ISO7841DWR maintains this behavior consistently across temperature and supply voltage ranges.
Does ISO7841DWR support bidirectional signal transmission?
The ISO7841DWR has three forward-direction channels (A–C) and one reverse-direction channel (D), as explicitly defined in the Description and Pin Functions sections. Channel D supports signal flow from output side to input side, enabling bidirectional communication such as fault reporting from isolated power stages back to controllers. This architecture is fixed and cannot be reconfigured.
What safety certifications apply specifically to ISO7841DWR?
ISO7841DWR holds VDE 0884-17 (8000 VPK reinforced), UL 1577 (5.7 kVRMS), CSA Component Acceptance Notice 5A (IEC 60950-1 and IEC 60601-1), CQC GB4943.1, and TUV EN 61010-1/EN 62368-1 certifications. All are explicitly listed for the ISO7841x family including ISO7841DWR in Section 5.7 of the datasheet.
Can ISO7841DWR operate with mismatched input and output supply voltages?
Yes - ISO7841DWR supports independent 2.25–5.5 V supplies on VCC1 (input side) and VCC2 (output side), enabling level translation between different logic families. For example, it can interface a 3.3 V MCU (VCC1) with a 5 V gate driver (VCC2), as verified in Sections 5.3 and 5.9–5.14 of the datasheet under varying supply conditions.
What is the minimum creepage and clearance for ISO7841DWR in the DW package?
The ISO7841DWR in the DW (wide-body SOIC-16) package provides >8 mm external creepage and clearance, with typical values of 15.0 mm. These dimensions meet reinforced insulation requirements for pollution degree 2 and material group I per IEC 60664-1, as specified in Table 5-6 under Insulation Specifications.
ISO7841DWR 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:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5700Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 16ns, 16ns
- Pulse Width Distortion (Max):
- 4.1ns
- Rise / Fall Time (Typ):
- 1.7ns, 1.9ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ISO7841DWR FAQ
1.How can I place an order for ISO7841DWR through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7841DWR 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 ISO7841DWR reliable?
The price and inventory of ISO7841DWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7841DWR is usually 5 days.
3.What payment methods are accepted for ISO7841DWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7841DWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7841DWR?
ISO7841DWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7841DWR 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 ISO7841DWR?
For technical support, including ISO7841DWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7841DWR requirements.
6.How does Aetrix verify that ISO7841DWR is sourced from the original manufacturer or authorized distributors?
All ISO7841DWR 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 ISO7841DWR meets industry standards.
7.What is the process for return or replacement of ISO7841DWR?
All ISO7841DWR units undergo pre-shipment inspection (PSI). If there is an issue with ISO7841DWR, 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 ISO7841DWR part is unused and in its original packaging.
Return procedure for ISO7841DWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7841DWR Tags
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ISO1212DBQR
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ISO7762FDBQR
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ISO7741FDWR
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