My Inquiry
My Account
Texas Instruments ISO7741FQDWWRQ1
- Part No.:
- ISO7741FQDWWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.551", 14.00mm Width)
- Datasheet:
-
ISO7741FQDWWRQ1.pdf
- Description:
- AUTO DGT ISO 4CH WIDE DWW PKG
- Quantity:
- Payment:
- Shipping:
Inventory:681
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISO7741FQDWWRQ1 from Texas Instruments is an automotive-grade, reinforced quad-channel digital isolator with three forward and one reverse-direction signal paths, 100 Mbps data rate, 5700 VRMS isolation rating (DWW package), and AEC-Q100 Grade 1 qualification (–40°C to 125°C). It enables safe, high-speed communication between high-voltage traction inverters and low-voltage MCU domains in EV powertrain systems.
For engineers reviewing the ISO7741FQDWWRQ1 datasheet, ISO7741FQDWWRQ1 pinout, ISO7741FQDWWRQ1 application, or ISO7741FQDWWRQ1 equivalent, key selection criteria include channel directionality (3F/1R), reinforced isolation certification (VDE 0884-17, UL 1577), CMTI ≥ ±100 kV/μs, dual-supply level translation (2.25 V–5.5 V), and default-low output behavior due to the "F" suffix.
Technical Context
The ISO7741FQDWWRQ1 implements double capacitive SiO₂ insulation barriers per channel, enabling reinforced isolation compliance across DIN EN IEC 60747-17 and UL 1577. Its architecture supports independent input/output supply domains (VCCI/VCCO) and includes two enable pins (EN1, EN2) for side-specific high-impedance control-critical for multi-controller bus arbitration in battery management systems.
Unlike ISO7740-Q1 (4F) and ISO7742-Q1 (2F/2R), the ISO7741FQDWWRQ1's asymmetric 3-forward/1-reverse configuration matches bidirectional control signal routing in inverter gate driver interfaces, where three PWM outputs and one fault feedback path require isolated transmission across safety boundaries.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 100 Mbps maximum - supports real-time PWM and status reporting in traction inverter control loops. |
| Isolation Rating | 5700 VRMS (UL 1577) - certified reinforced barrier for 1200 V DC bus systems with >30-year lifetime at 1500 VRMS working voltage. |
| 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 per side - enables direct interfacing with 3.3 V MCUs and 5 V gate drivers without level shifters. |
| Propagation Delay | 10.7 ns typical (5 V supplies) - ensures timing-critical feedback paths meet <20 ns round-trip latency budgets. |
| Default Output State | Low (due to "F" suffix) - failsafe behavior during power loss prevents unintended gate activation in isolated driver stages. |
| Ambient Temp Range | –40°C to +125°C (AEC-Q100 Grade 1) - qualified for under-hood placement in on-board chargers and DC/DC converters. |
Pinout & Package
ISO7741FQDWWRQ1 uses the extra-wide SOIC-16 (DWW) package (10.30 mm × 14.0 mm), optimized for creepage/clearance compliance in high-voltage automotive applications. The package provides reinforced insulation with >14.5 mm external clearance and >21 μm internal distance through insulation (DTI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA, INB, INC, IND | Input channels A–D | Logic inputs referenced to VCCI/GNDI; INC and IND are reverse-direction inputs (ISO7741-specific). |
| OUTA, OUTB, OUTC, OUTD | Output channels A–D | CMOS/LVCMOS outputs referenced to VCCO/GNDO; OUTC and OUTD are reverse-direction outputs (ISO7741-specific). |
| EN1, EN2 | Output enable controls | Active-high enables side-1 (pins 1–8) or side-2 (pins 9–16) outputs; allows tri-state bus sharing in multi-MCU architectures. |
| VCCI, VCCO | Independent power supplies | VCCI powers input-side logic; VCCO powers output-side logic - enables level translation and domain separation. |
| GNDI, GNDO | Isolated grounds | Galvanically separated reference planes prevent ground-loop currents between HV and LV subsystems. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation Certification | DIN EN IEC 60747-17 (VDE 0884-17), UL 1577, IEC 62368-1 - meets functional safety requirements for ASIL-B/C system integration. |
| High CMTI Performance | ±100 kV/μs typical - maintains signal integrity during 1200 V bus switching events without added filtering or layout margin. |
| Low Power at High Speed | 12.5 mA ICC1 + 24 mA ICC2 typical at 100 Mbps (5 V) - reduces thermal load in densely packed power electronics modules. |
| Fail-Safe Default Output | Low state on power loss (F-suffix) - prevents latch-up or shoot-through in isolated gate driver enable paths. |
| Multi-Supply Level Translation | 2.25 V–5.5 V operation on both sides - eliminates external level shifters when interfacing 3.3 V microcontrollers to 5 V gate drivers. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
|
Use Scenario: Isolating cell voltage monitoring ADCs and pack contactor control signals between high-voltage battery stack and low-voltage MCU. IC Role / Device Role / Timing Role: Quad-channel isolator providing 3 forward paths for analog monitor data and 1 reverse path for fault feedback from contactor drivers. Use Value: Enables ASIL-D compliant BMS designs by meeting reinforced isolation, CMTI >100 kV/μs, and AEC-Q100 Grade 1 requirements without derating. |
Use Scenario: Transmitting PWM gate drive signals from MCU to isolated gate drivers while returning DESAT and UVLO fault signals. IC Role / Device Role / Timing Role: 3F/1R channel configuration delivers three synchronized PWM outputs and one time-critical fault return path across the isolation barrier. Use Value: 10.7 ns propagation delay and 100 Mbps capability ensure <20 ns round-trip latency for fast overcurrent shutdown response. |
| On-Board Charger (OBC) | DC/DC Converter Control |
|
Use Scenario: Isolating digital control signals between primary-side controller and secondary-side synchronous rectifier drivers in bi-directional OBC topologies. IC Role / Device Role / Timing Role: Forward channels carry phase-shifted PWM commands; reverse channel returns secondary-side current sense alerts. Use Value: Dual-supply operation (3.3 V MCU ↔ 5 V drivers) and 5700 VRMS isolation support 800 V battery interface compliance. |
Use Scenario: Coupling control signals between low-voltage PMIC and high-side/low-side gate drivers in 48 V–12 V DC/DC converters. IC Role / Device Role / Timing Role: Provides isolated enable, PWM, and fault reporting paths with fail-safe low-default output preventing uncontrolled startup. Use Value: AEC-Q100 qualification and 125°C ambient rating allow placement near magnetics and MOSFETs without thermal derating. |
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 |
|---|---|---|---|
| ISO7741QDWQRQ1 | No "F" suffix → default output high; otherwise identical pinout, specs, and DWW package. | Suitable where active-high fail-safe (e.g., enable-on-power-up) is required instead of active-low. | Select ISO7741QDWQRQ1 only if system-level fault logic requires high-default outputs during brownout. |
| ADUM4401BRIZ-RL | 4-channel, 100 Mbps, 5000 VRMS (UL), but only basic isolation (not reinforced); no AEC-Q100 qualification. | Limited to non-safety-critical industrial applications; not approved for automotive powertrain use. | Use ADUM4401BRIZ-RL only in non-automotive contexts where reinforced isolation and AEC-Q100 are not mandated. |
Compared with ISO7741QDWQRQ1, ISO7741FQDWWRQ1 provides fail-safe low-default behavior essential for gate driver disable paths; compared with ADUM4401BRIZ-RL, it delivers certified reinforced isolation and automotive qualification required for EV traction systems.
Availability
ISO7741FQDWWRQ1 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 ISO7741FQDWWRQ1 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 ISO774x-Q1 family was designed specifically for ASIL-B/C automotive powertrain systems, delivering reinforced isolation, high CMTI, and AEC-Q100 qualification to enable safe, compact, and efficient EV/HEV architectures.
FAQ
What does the "F" suffix in ISO7741FQDWWRQ1 indicate?
The "F" suffix denotes a default-low output configuration: when input power or signal is lost, all outputs of ISO7741FQDWWRQ1 assert low. This fail-safe behavior prevents unintended activation of downstream circuits such as gate drivers or contactors. ISO7741FQDWWRQ1 maintains identical timing, isolation, and electrical specs as non-F variants-only the power-loss default state differs.
Which package does ISO7741FQDWWRQ1 use, and why is it critical for automotive applications?
ISO7741FQDWWRQ1 uses the DWW (extra-wide SOIC-16) package measuring 10.30 mm × 14.0 mm. Its extended creepage (>14.5 mm) and clearance distances meet reinforced insulation requirements for 1200 V DC bus systems per DIN EN IEC 60747-17 and UL 1577. This package enables direct placement in high-voltage zones of traction inverters without additional spacing or potting.
How does the 3-forward/1-reverse channel configuration of ISO7741FQDWWRQ1 benefit inverter control?
The ISO7741FQDWWRQ1's 3F/1R topology directly maps to common inverter gate driver interfaces: three forward channels transmit PWM signals to high-side/low-side drivers, while the single reverse channel returns critical fault signals (e.g., DESAT, UVLO) to the MCU. This eliminates the need for discrete reverse-channel isolators and reduces BOM count and PCB area versus generic 4-channel isolators.
Does ISO7741FQDWWRQ1 support level translation between different supply voltages?
Yes. ISO7741FQDWWRQ1 supports independent 2.25 V–5.5 V supplies on input (VCCI) and output (VCCO) sides. This enables seamless level translation-for example, interfacing a 3.3 V automotive MCU to 5 V isolated gate drivers-without external level shifters. Input thresholds scale with VCCI (e.g., VIH = 0.7 × VCCI), ensuring robust logic compatibility across voltage domains.
What safety certifications apply to ISO7741FQDWWRQ1, and which standards do they cover?
ISO7741FQDWWRQ1 holds DIN EN IEC 60747-17 (VDE 0884-17), UL 1577, IEC 62368-1, IEC 61010-1, IEC 60601-1, and GB 4943.1 certifications. These validate its reinforced insulation barrier for 5700 VRMS (UL) and 2828 VPK (VDE), 12.8 kV surge immunity, and suitability in ASIL-B/C automotive systems, medical equipment, and industrial test gear requiring dual-mop protection.
ISO7741FQDWWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.551", 14.00mm 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):
- 85kV/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
ISO7741FQDWWRQ1 FAQ
1.How can I place an order for ISO7741FQDWWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7741FQDWWRQ1 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 ISO7741FQDWWRQ1 reliable?
The price and inventory of ISO7741FQDWWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7741FQDWWRQ1 is usually 5 days.
3.What payment methods are accepted for ISO7741FQDWWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7741FQDWWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7741FQDWWRQ1?
ISO7741FQDWWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7741FQDWWRQ1 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 ISO7741FQDWWRQ1?
For technical support, including ISO7741FQDWWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7741FQDWWRQ1 requirements.
6.How does Aetrix verify that ISO7741FQDWWRQ1 is sourced from the original manufacturer or authorized distributors?
All ISO7741FQDWWRQ1 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 ISO7741FQDWWRQ1 meets industry standards.
7.What is the process for return or replacement of ISO7741FQDWWRQ1?
All ISO7741FQDWWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ISO7741FQDWWRQ1, 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 ISO7741FQDWWRQ1 part is unused and in its original packaging.
Return procedure for ISO7741FQDWWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7741FQDWWRQ1 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…
