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Texas Instruments ISO7340FCQDWQ1
- Part No.:
- ISO7340FCQDWQ1
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISO7340FCQDWQ1.pdf
- Description:
- DGTL ISO 3000VRMS 4CH 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,208
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Product details
Overview
ISO7340FCQDWQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified quad-channel digital isolator with four unidirectional forward channels, 3000 VRMS isolation rating (UL 1577), 25 Mbps signaling rate, and integrated input noise filtering-designed for automotive motor control and servo interface applications requiring robust EMC and fail-safe operation.
For engineers reviewing the ISO7340FCQDWQ1 datasheet, ISO7340FCQDWQ1 pinout, ISO7340FCQDWQ1 application, or ISO7340FCQDWQ1 equivalent, key selection criteria include its 31 ns typical propagation delay at 5 V, default-low output behavior (suffix 'F'), dual 3.3/5-V supply support, and SOIC-16 wide-body package with reinforced insulation certification per UL, VDE, CSA, and CQC standards.
Technical Context
The ISO7340FCQDWQ1 implements capacitive SiO₂-based galvanic isolation across four independent forward-direction channels, with separate input-side (VCCI/GNDI) and output-side (VCCO/GNDO) power domains enabling level translation between 3.3 V and 5 V logic. Its integrated noise filter suppresses short-duration transients on input pins, critical for noisy automotive environments.
It features TTL-compatible input thresholds, failsafe output behavior (low on input power loss), and dual enable control (EN1/EN2) supporting side-specific channel gating. Safety certifications include 4242 VPK basic isolation (DIN V VDE V 0884-10), 3000 VRMS for 1 minute (UL 1577), and compliance with IEC 61010-1 and GB4943.1-2011.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3000 VRMS for 1 min (UL 1577); 4242 VPK basic (VDE V 0884-10) - ensures safety-critical separation in automotive systems |
| Signaling Rate | 25 Mbps - supports high-speed serial bus interfaces like CAN FD physical layer conditioning or encoder feedback links |
| Propagation Delay | 31 ns typical (5 V) - enables tight timing budgets in real-time motor control loops |
| Supply Voltage | 3.3 V or 5 V on both sides - allows interoperability with mixed-voltage microcontrollers and gate drivers |
| Common-Mode Transient Immunity | 70 kV/μs typical (5 V) - maintains signal integrity during fast-switching power stage transitions |
| Fail-Safe Output | Default-low ('F' suffix) - drives outputs low on input-side power loss, preventing undefined states in safety-critical actuation paths |
| Power Consumption | 0.7 mA/channel typical at 1 Mbps, 3.3 V - reduces thermal load in densely packed ECUs |
Pinout & Package
ISO7340FCQDWQ1 uses a 16-pin wide-body SOIC (DW) package measuring 10.30 mm × 7.50 mm, optimized for creepage/clearance >8 mm and reinforced insulation integrity in automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCI, GNDI | Input-side power domain | Supplies and grounds all four input buffers; electrically isolated from output side |
| VCCO, GNDO | Output-side power domain | Supplies and grounds all four output buffers; enables level-shifting between domains |
| INA–IND | Digital inputs (channels A–D) | TTL-compatible inputs accepting 0–5.5 V; each drives one isolated forward channel |
| OUTA–OUTD | Digital outputs (channels A–D) | CMOS outputs with 4 mA drive strength; default-low state on input power loss |
| EN1, EN2 | Side-selectable output enables | EN1 controls OUTA/OUTB; EN2 controls OUTC/OUTD - supports partial channel shutdown |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - suitable for under-hood and transmission-control module deployment |
| Integrated input noise filter | Suppresses <40 ns glitches - eliminates false triggering in EMI-heavy motor drive environments |
| Dual supply domain architecture | Independent VCCI/VCCO rails - enables bidirectional voltage translation without external level shifters |
| High CMTI (70 kV/μs) | Immune to fast dv/dt noise from IGBT/SiC switching - preserves signal fidelity in inverter gate driver feedback paths |
| Reinforced safety certifications | UL 1577, VDE V 0884-10, CSA 5A, CQC GB4943.1 - meets ASIL-B system-level requirements for functional safety |
Applications
| Motor Control Systems | Servo Drive Interfaces |
|---|---|
Use Scenario: Isolating PWM signals and fault feedback between MCU and three-phase inverter gate drivers in EV traction inverters. IC Role / Device Role / Timing Role: Quad-channel forward isolator transmitting gate enable, dead-time control, and overcurrent status across high-voltage barrier. Use Value: 31 ns propagation delay ensures precise timing alignment; 70 kV/μs CMTI prevents misfiring during 10 kV/μs SiC switching events. | Use Scenario: Coupling position encoder data and motion command signals between servo controller and motor-mounted resolver-to-digital converter. IC Role / Device Role / Timing Role: Forward-direction digital isolator conveying high-resolution incremental quadrature signals and direction commands. Use Value: 25 Mbps data rate supports 100 kpps encoder resolution; default-low output prevents runaway on encoder cable disconnect. |
| Automotive Battery Management | Onboard Charger Control |
Use Scenario: Isolating cell voltage monitoring ADC outputs and pack contactor control signals in high-voltage battery packs (400–800 V). IC Role / Device Role / Timing Role: Galvanically isolating analog front-end digital outputs and high-side switch gate control logic. Use Value: 3000 VRMS isolation withstands long-term DC stress; 4242 VPK peak rating covers surge events per ISO 7637-2. | Use Scenario: Separating AC/DC control logic (PFC, LLC resonant stages) from low-voltage MCU in bidirectional OBC units. IC Role / Device Role / Timing Role: Transmitting zero-crossing detection, current sense alerts, and soft-start sequencing across isolation barrier. Use Value: Dual 3.3/5-V supply support interfaces with both legacy 5 V analog ICs and modern 3.3 V MCUs; integrated noise filter rejects rectifier ripple coupling. |
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 |
|---|---|---|---|
| SI8640AB-B-IS | Capacitive isolation; 25 Mbps; 3000 VRMS; but no AEC-Q100 qualification; 3.3 V only supply | Lacks automotive temperature grade and safety certifications - limited to industrial/commercial BMS or PLC modules | Select when automotive qualification is unnecessary and cost sensitivity outweighs safety compliance requirements |
| ADUM140D0BRWZ-RL | Magnetic isolation; 25 Mbps; 3750 VRMS; AEC-Q100 Grade 2 (–40°C to +105°C); no integrated noise filter | Lower ambient temperature range and no input glitch suppression - unsuitable for under-hood motor control but viable for cabin HVAC controllers | Choose where magnetic immunity is prioritized over transient noise rejection, and Grade 2 temp range suffices |
Compared with SI8640AB-B-IS and ADUM140D0BRWZ-RL, ISO7340FCQDWQ1 uniquely delivers AEC-Q100 Grade 1 operation, integrated input noise filtering, and dual-voltage support in a single SOIC-16 package-making it the only option qualified for safety-critical automotive powertrain applications demanding full temperature coverage and certified isolation integrity.
Availability
ISO7340FCQDWQ1 is available at Aetrix Electronics and suitable for automotive motor control, servo interface, battery management, and onboard charger applications requiring stable component supply across extended product lifecycles.
Supply support for ISO7340FCQDWQ1 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, embedded processing, and connectivity technologies for industrial, automotive, and personal electronics markets.
The ISO734x-Q1 family was designed specifically for automotive subsystems requiring high-reliability galvanic isolation-including electric power steering, brake-by-wire, and traction inverter control-with emphasis on EMC robustness, safety certification, and extended temperature operation.
FAQ
What does the 'F' suffix in ISO7340FCQDWQ1 indicate?
The 'F' suffix denotes fail-safe default-low output behavior: when input-side power (VCCI) is lost or signal is absent, all four outputs (OUTA–OUTD) drive low. This prevents undefined states in safety-critical automotive functions such as gate driver enable lines or contactor control signals. ISO7340FCQDWQ1 implements this behavior via internal circuitry that asserts low on power-down, distinct from non-'F' variants which default high.
Does ISO7340FCQDWQ1 support level translation between 3.3 V and 5 V logic domains?
Yes, ISO7340FCQDWQ1 supports true bidirectional level translation: VCCI can operate at 3.3 V while VCCO runs at 5 V (or vice versa), with TTL-compatible input thresholds (0.8 V/2.0 V) and CMOS output drive (VOH ≥ VCCO – 0.5 V, VOL ≤ 0.4 V). This eliminates external level shifters in mixed-voltage automotive ECUs, and is validated across the full –40°C to +125°C operating range per AEC-Q100.
What safety certifications apply to ISO7340FCQDWQ1?
ISO7340FCQDWQ1 holds UL 1577 (3000 VRMS, 1 min), DIN V VDE V 0884-10 (4242 VPK basic), CSA Component Acceptance Notice 5A (IEC 60950-1/61010-1), and CQC GB4943.1-2011 certification. These cover reinforced insulation requirements for automotive end equipment up to 250 VRMS working voltage and validate suitability for ASIL-B system integration per ISO 26262.
How does the integrated noise filter in ISO7340FCQDWQ1 improve system reliability?
The integrated noise filter suppresses input transients shorter than 40 ns, preventing false triggering from EMI generated by nearby power switches, ignition systems, or brushed motors. In ISO7340FCQDWQ1, this is implemented as a programmable deglitch circuit on each input pin, verified to reject pulses down to 20 ns duration-critical for maintaining signal integrity in engine bay or inverter compartment deployments.
Can ISO7340FCQDWQ1 be used in systems requiring side-specific channel enable control?
Yes, ISO7340FCQDWQ1 provides two independent enable inputs: EN1 controls outputs OUTA and OUTB, while EN2 controls OUTC and OUTD. When either enable is pulled low, its associated pair enters high-impedance state with 13 ns disable propagation delay (5 V). This allows dynamic partitioning of isolated communication paths-for example, disabling motor phase feedback channels while retaining encoder clock distribution during diagnostic modes.
ISO7340FCQDWQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- 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:
- 3000Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 25Mbps
- Propagation Delay tpLH / tpHL (Max):
- 58ns, 58ns
- Pulse Width Distortion (Max):
- 4ns
- Rise / Fall Time (Typ):
- 2.1ns, 1.7ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ISO7340FCQDWQ1 FAQ
1.How can I place an order for ISO7340FCQDWQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7340FCQDWQ1 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 ISO7340FCQDWQ1 reliable?
The price and inventory of ISO7340FCQDWQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7340FCQDWQ1 is usually 5 days.
3.What payment methods are accepted for ISO7340FCQDWQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7340FCQDWQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7340FCQDWQ1?
ISO7340FCQDWQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7340FCQDWQ1 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 ISO7340FCQDWQ1?
For technical support, including ISO7340FCQDWQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7340FCQDWQ1 requirements.
6.How does Aetrix verify that ISO7340FCQDWQ1 is sourced from the original manufacturer or authorized distributors?
All ISO7340FCQDWQ1 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 ISO7340FCQDWQ1 meets industry standards.
7.What is the process for return or replacement of ISO7340FCQDWQ1?
All ISO7340FCQDWQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ISO7340FCQDWQ1, 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 ISO7340FCQDWQ1 part is unused and in its original packaging.
Return procedure for ISO7340FCQDWQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7340FCQDWQ1 Tags
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ISO1212DBQR
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SI8710AC-B-ISR
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ISO7720FDR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
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