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Texas Instruments ISO7330FCDW
- Part No.:
- ISO7330FCDW
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISO7330FCDW.pdf
- Description:
- DGTL ISO 3000VRMS 3CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:549
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Product details
Overview
ISO7330FCDW from Texas Instruments is a triple-channel digital isolator with galvanic isolation up to 3000 VRMS (1 min UL) and 4242 VPK (VDE), 25 Mbps signaling rate, 32 ns typical propagation delay at 5 V, default-low fail-safe output behavior, and wide-body SOIC-16 package. It isolates industrial fieldbus data paths while supporting 3.3 V/5 V level translation across three unidirectional channels.
For engineers reviewing the ISO7330FCDW datasheet, ISO7330FCDW pinout, ISO7330FCDW application, or ISO7330FCDW equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts for industrial motor control, servo interface, and isolated power supply monitoring.
Technical Context
The ISO7330FCDW implements capacitive isolation using dual-path architecture: a high-frequency channel (100 kbps–25 Mbps) for fast data and a low-frequency PWM-modulated channel (DC–100 kbps) for static or slow signals. Input glitch suppression is integrated, with hysteresis of 480 mV (5 V) or 425 mV (3.3 V).
It features independent input-side (VCCI/GNDI) and output-side (VCCO/GNDO) power domains, enabling bidirectional level shifting. The EN pin disables all three outputs into high-impedance state, with tPHZ/tPLZ ≤12 ns (5 V) and fail-safe delay tfs = 7 μs upon input power loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3000 VRMS per UL 1577 (1 min); 4242 VPK per DIN V VDE V 0884-10 - certifies reinforced insulation for industrial safety-critical interfaces. |
| Signaling Rate | 25 Mbps - supports high-speed serial protocols like RS-485 Modbus RTU at full duplex without timing bottleneck. |
| Propagation Delay | 32 ns typical (5 V) - enables tight timing budgets in servo position feedback loops and PWM gate drive synchronization. |
| Supply Voltage Range | 3 V to 5.5 V on both sides - allows direct interfacing with 3.3 V microcontrollers and 5 V PLC I/O without external level shifters. |
| Common-Mode Transient Immunity | 70 kV/μs typical (5 V) - suppresses noise coupling in motor drive inverters with fast-switching SiC/GaN FETs. |
| Fail-Safe Output State | Default-low (suffix 'F') - ensures safe shutdown of downstream drivers during input-side power failure in motor control systems. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive subsystems and industrial variable-frequency drives. |
Pinout & Package
ISO7330FCDW uses a wide-body SOIC-16 package (10.3 mm × 7.5 mm) with creepage/clearance ≥8 mm and internal SiO₂ barrier thickness ≥13 µm. Pin 1 is VCC1 (input-side supply); pins 2 and 8 are GND1 (input ground); pins 9 and 15 are GND2 (output ground); pin 16 is VCC2 (output-side supply). NC pins (6, 7, 11) must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC1, VCC2 | Independent supply rails | VCC1 powers input logic and isolation barrier transmitter; VCC2 powers output logic and receiver - enables true 3.3 V ↔ 5 V level translation. |
| GND1, GND2 | Isolated ground references | GND1 anchors input-side reference; GND2 anchors output-side reference - breaks ground loops between noisy motor stages and clean MCU domains. |
| INA, INB, INC | Digital inputs (3 channels) | TTL-compatible inputs with 0.8 V/2.0 V thresholds - accept standard CMOS outputs without external biasing. |
| OUTA, OUTB, OUTC | Digital outputs (3 channels) | Push-pull CMOS outputs with ±4 mA drive - directly drive optocoupler LED equivalents or FPGA I/O banks. |
| EN | Global output enable | Active-high enable: pulls all outputs to high-Z when low - used for system-level power sequencing and fault isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated noise filter | Suppresses >40 ns input glitches - eliminates false triggering from EFT bursts in factory-floor PLC backplanes. |
| Low power consumption | 1 mA/channel typical at 1 Mbps (5 V) - reduces thermal load in densely packed I/O modules with dozens of isolators. |
| Robust EMC performance | System-level ESD (±4 kV HBM), EFT (±2 kV), surge (6 kV), and low emissions - meets IEC 61000-4-x without external filtering. |
| Isolation barrier life | >25 years at rated working voltage - qualifies for long-lifecycle industrial equipment with no field-replacement requirement. |
| Wide temperature range | Operates continuously from –40°C to +125°C junction - supports placement near power stages without derating. |
Applications
| Industrial FieldBus Isolation | Servo Motor Control Interface |
|---|---|
|
Use Scenario: Isolating RS-485 transceivers in Modbus RTU networks connecting PLCs to remote I/O racks in electrically noisy factory environments. IC Role / Device Role / Timing Role: Triple-channel unidirectional isolator separating controller-side logic (VCCI=3.3 V) from bus-side transceiver (VCCO=5 V), preserving signal integrity at 115.2 kbps. Use Value: Eliminates ground-loop-induced communication errors and prevents bus faults from propagating to the controller CPU. |
Use Scenario: Isolating position encoder feedback (A/B/Z quadrature) and PWM gate-drive signals between servo amplifier and motion controller. IC Role / Device Role / Timing Role: Provides three synchronized, low-skew (<2.5 ns PWD) isolation paths for encoder clock, data, and direction - critical for sub-microsecond position loop closure. Use Value: Enables deterministic timing with 32 ns propagation delay and 70 kV/μs CMTI to reject noise from IGBT switching edges. |
| Isolated DC-DC Feedback Loop | Battery Management System (BMS) Monitoring |
|
Use Scenario: Transmitting error amplifier output from secondary-side isolated DC-DC converter to primary-side PWM controller across 3 kVRMS barrier. IC Role / Device Role / Timing Role: Unidirectional analog-compatible isolator converting slow-varying feedback voltage into pulse-width modulated digital signal via internal LF channel. Use Value: Maintains regulation accuracy with <1% gain error over temperature, avoiding optocoupler aging and bandwidth limitations. |
Use Scenario: Isolating cell voltage and temperature sensor readings from high-voltage battery stack (up to 800 V) to low-voltage MCU domain in EV traction BMS. IC Role / Device Role / Timing Role: Three independent channels isolate voltage sense lines (CH1), temperature ADC SPI clock (CH2), and ready/status flag (CH3) - all referenced to separate grounds. Use Value: Meets reinforced insulation requirements (4242 VPK) and provides fail-safe low output on power loss to trigger immediate contactor disconnect. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM3300ARWZ | 3.3 V only operation; 1 Mbps max rate; 50 ns propagation delay; 2500 VRMS isolation | Limited to low-speed industrial sensors and legacy fieldbus where timing margin is ample | Select when cost sensitivity outweighs speed and isolation rating requirements; verify layout clearance for lower VDE rating. |
| SI8630BB-B-IS | 3.3 V/5 V compatible; 10 Mbps max rate; 12 ns propagation delay; 5000 VRMS isolation | Better suited for high-noise, high-isolation applications like solar string inverters but lacks fail-safe default-low behavior | Choose for higher isolation margin and faster edge response; add external pull-down if default-low safety logic is mandatory. |
Compared with ADUM3300ARWZ and SI8630BB-B-IS, ISO7330FCDW uniquely balances 25 Mbps speed, 3000 VRMS/4242 VPK certification, and intrinsic default-low fail-safe behavior-making it optimal for real-time motor control and safety-critical power monitoring where timing, noise immunity, and power-loss response are co-constrained.
Availability
ISO7330FCDW is available at Aetrix Electronics and suitable for industrial fieldbus, servo control, isolated power supplies, battery management systems, and motor drive applications requiring stable component supply across multi-year production cycles.
Supply support for ISO7330FCDW 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 components for industrial, automotive, and communications markets.
The ISO733x family was designed specifically for robust industrial isolation-emphasizing EMC resilience, long-term reliability, and fail-safe behavior in harsh electromagnetic environments such as factory automation and motor control.
FAQ
What is the default output state of ISO7330FCDW during input power loss?
The ISO7330FCDW has a default-low output configuration due to the 'F' suffix. When VCCI or input signals are lost, all three outputs (OUTA/OUTB/OUTC) transition to logic low within 7 μs (tfs), ensuring safe shutdown of downstream drivers. This behavior is intrinsic to the device architecture and requires no external circuitry - a critical feature for ISO7330FCDW in motor control safety interlocks.
Does ISO7330FCDW support level translation between 3.3 V and 5 V domains?
Yes, ISO7330FCDW supports true bidirectional level translation: VCCI can be 3.3 V while VCCO is 5 V (or vice versa), with TTL-compatible input thresholds and CMOS output drive. Its VIH/VIL specs (0–0.8 V / 2–5.5 V) and VOH/VOL (≥4.7 V / ≤0.4 V at 5 V) ensure reliable interfacing across mixed-supply systems - a core capability of ISO7330FCDW in modern industrial controllers.
What is the maximum data rate supported by ISO7330FCDW?
ISO7330FCDW supports up to 25 Mbps signaling rate under recommended conditions (VCC = 5 V ±10%, TA = 25°C). At 3.3 V, the max rate remains 25 Mbps but with increased propagation delay (36 ns typical) and reduced CMTI (50 kV/μs). This rate is validated per TI's SLLSEK9B datasheet and applies to all three channels simultaneously - a key specification for ISO7330FCDW in high-throughput encoder or fast serial interfaces.
How does the EN pin function on ISO7330FCDW?
The EN pin on ISO7330FCDW is a global active-high output enable. When pulled low, it places OUTA, OUTB, and OUTC into high-impedance state with tPHZ/tPLZ ≤12 ns (5 V). When open or high, outputs operate normally. This pin enables system-level power sequencing and fault containment - a distinct feature of ISO7330FCDW not present in dual-channel variants like ISO7320.
What safety certifications does ISO7330FCDW hold?
ISO7330FCDW is certified to UL 1577 (3000 VRMS, 1 min), DIN V VDE V 0884-10 (4242 VPK, reinforced insulation), CSA Component Acceptance Notice 5A, IEC 60950-1, IEC 61010-1, and CQC GB4943.1-2011. These approvals validate its use in safety-rated industrial equipment - a documented compliance profile unique to ISO7330FCDW among TI's 3-channel isolators.
ISO7330FCDW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 3
- Inputs - Side 1/Side 2:
- 3/0
- 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):
- 3ns, 2ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ISO7330FCDW FAQ
1.How can I place an order for ISO7330FCDW through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7330FCDW 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 ISO7330FCDW reliable?
The price and inventory of ISO7330FCDW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7330FCDW is usually 5 days.
3.What payment methods are accepted for ISO7330FCDW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7330FCDW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7330FCDW?
ISO7330FCDW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7330FCDW 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 ISO7330FCDW?
For technical support, including ISO7330FCDW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7330FCDW requirements.
6.How does Aetrix verify that ISO7330FCDW is sourced from the original manufacturer or authorized distributors?
All ISO7330FCDW 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 ISO7330FCDW meets industry standards.
7.What is the process for return or replacement of ISO7330FCDW?
All ISO7330FCDW units undergo pre-shipment inspection (PSI). If there is an issue with ISO7330FCDW, 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 ISO7330FCDW part is unused and in its original packaging.
Return procedure for ISO7330FCDW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7330FCDW Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
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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
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