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Texas Instruments ISO7330CDWR
- Part No.:
- ISO7330CDWR
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISO7330CDWR.pdf
- Description:
- DGTL ISO 3000VRMS 3CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,666
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Product details
Overview
ISO7330CDWR from Texas Instruments is a triple-channel, unidirectional digital isolator using capacitive SiO₂ isolation barrier, rated for 3000 VRMS (1 min UL) and 4242 VPK (VDE), with 25 Mbps signaling rate, 32 ns typical propagation delay at 5 V, and default-low fail-safe output behavior. It enables galvanic separation between industrial fieldbus controllers and isolated I/O modules in servo drives.
For engineers reviewing the ISO7330CDWR datasheet, ISO7330CDWR pinout, ISO7330CDWR application, or ISO7330CDWR equivalent, key selection criteria include its 3-forward-channel topology, integrated input noise filter, 3.3 V/5 V dual-supply operation, -40°C to 125°C temperature range, and SOIC-16 wide-body package with reinforced insulation.
Technical Context
The ISO7330CDWR implements a dual-path capacitive isolation architecture: a high-frequency channel (100 kbps–25 Mbps) for fast data transmission and a low-frequency PWM-modulated channel (DC–100 kbps) for DC/low-speed signals. Its input stage includes TTL-compatible thresholds (VIH = 2 V, VIL = 0.8 V) and 480 mV hysteresis for noise immunity.
It features independent VCCI/GNDI (input side) and VCCO/GNDO (output side) supplies enabling 3.3 V/5 V level translation, with CMTI of 70 kV/μs (5 V) and fail-safe output activation within 7 μs upon input power loss. The device supports EN-controlled three-state outputs and meets system-level ESD/EFT/surge immunity per IEC 61000-4 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3000 VRMS (UL 1577, 1 min) / 4242 VPK (DIN V VDE V 0884-10); enables reinforced insulation in safety-critical motor control systems |
| Signaling Rate | 25 Mbps maximum; supports high-speed serial interfaces like RS-485 transceiver control in industrial PLC backplanes |
| Propagation Delay | 32 ns typical at 5 V; ensures timing-critical synchronization in servo position feedback loops |
| Supply Voltage Range | 3 V to 5.5 V per side; allows direct interfacing with both 3.3 V microcontrollers and 5 V legacy logic without level shifters |
| Power Consumption | 1 mA typical per channel at 1 Mbps (5 V); reduces thermal load in densely packed isolated gate driver boards |
| Operating Temperature | -40°C to +125°C; qualified for under-hood automotive battery management and industrial motor drive environments |
| Common-Mode Transient Immunity | 70 kV/μs typical (5 V); suppresses ground bounce-induced errors in high-dV/dt inverter gate drive circuits |
Pinout & Package
ISO7330CDWR uses a wide-body SOIC-16 package (10.3 mm × 7.5 mm) with creepage/clearance ≥8 mm and internal SiO₂ insulation barrier life >25 years.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC1 | Input-side power supply | Connects to 3.3 V or 5 V controller domain; powers INA, INB, INC, EN inputs and internal logic |
| VCC2 | Output-side power supply | Connects to isolated 3.3 V or 5 V domain; powers OUTA, OUTB, OUTC drivers and output buffers |
| GND1 (pins 2, 8) | Input-side ground reference | Return path for VCC1; must be separated from GNDO to maintain galvanic isolation integrity |
| GND2 (pins 9, 15) | Output-side ground reference | Return path for VCC2; forms isolated secondary ground plane for downstream analog/motor circuits |
| INA, INB, INC | Digital inputs (channels A–C) | TTL-compatible inputs accepting 0–5.5 V; each has integrated noise filter for harsh EMI environments |
| OUTA, OUTB, OUTC | Digital outputs (channels A–C) | Push-pull CMOS outputs driving ±4 mA; default-low on input power loss ('C' suffix = non-F variant) |
| EN | Global output enable | Active-high control: outputs go high-impedance when EN = 0 V; enables shared bus arbitration in multi-isolator systems |
| NC (pins 6, 7, 11) | No-connect terminals | Internally unconnected; must remain floating-no PCB trace or solder mask required |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive SiO₂ isolation barrier | Enables >25-year lifetime and 70 kV/μs CMTI without aging-related degradation seen in optocouplers |
| Integrated input noise filter | Rejects short-duration EFT bursts (<40 ns) common in industrial motor drive cabinets without external RC networks |
| Fail-safe default-low output | Guarantees safe shutdown state (e.g., disable gate driver) during MCU reset or VCCI brownout |
| 3.3 V/5 V level translation | Eliminates external level shifters when interfacing 3.3 V FPGAs with 5 V isolated power supplies or analog front-ends |
| System-level EMC compliance | Meets IEC 61000-4-2/4/5 requirements out-of-box-reduces pre-compliance debug time in industrial certifications |
Applications
| Industrial FieldBus Isolation | Motor Drive Gate Driver Interface |
|---|---|
Use Scenario: Isolating RS-485 transceiver control lines and status signals in ProfiBus DP slave nodes operating in factory-floor EMI environments. IC Role / Device Role / Timing Role: Triple-channel unidirectional isolator providing galvanic separation between PLC master MCU (VCCI side) and isolated bus transceiver (VCCO side). Use Value: Prevents ground-loop currents from corrupting differential bus communication while maintaining 25 Mbps update rates for real-time motion control. |
Use Scenario: Interfacing microcontroller PWM outputs to isolated gate drivers in 3-phase inverter stages of HVAC compressors. IC Role / Device Role / Timing Role: Transmitting three independent high-side gate enable signals across isolation barrier with <32 ns skew between channels. Use Value: Enables precise synchronous switching of IGBTs with minimal propagation delay mismatch, reducing shoot-through risk. |
| Servo Control Feedback Path | Battery Management System (BMS) Communication |
Use Scenario: Isolating encoder quadrature A/B/Z signals and limit switch inputs from servo amplifier MCU in robotic joint actuators. IC Role / Device Role / Timing Role: Providing robust, low-jitter isolation for position feedback channels operating at up to 10 MHz edge rates. Use Value: Maintains sub-microsecond timing accuracy in closed-loop position control despite 1 kV common-mode transients from motor windings. |
Use Scenario: Isolating UART communication between primary BMS controller (48 V domain) and cell monitoring ICs (200+ V battery stack). IC Role / Device Role / Timing Role: Transmitting telemetry and fault commands bidirectionally across reinforced isolation barrier with fail-safe default-low assertion. Use Value: Ensures safe shutdown command delivery even during partial power loss in high-voltage traction battery packs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO7330CDW | Same SOIC-16 package but tape-and-reel vs cut-tape; identical electrical specs and pinout | No functional difference; selected for automated SMT line compatibility | Choose ISO7330CDW for high-volume pick-and-place assembly where reel packaging is required |
| ADUM1300ARWZ | 3-channel, unidirectional, but uses iCoupler magnetic isolation; 1 Mbps max rate; no integrated noise filter | Limited to lower-speed control links; requires external filtering in noisy motor drive environments | Prefer ISO7330CDWR where 25 Mbps speed, 70 kV/μs CMTI, or built-in noise suppression are mandatory |
Compared with ISO7330CDW, ISO7330CDWR offers identical performance in a cut-tape format suitable for prototyping and low-volume production; versus ADUM1300ARWZ, it delivers 25× higher data rate and superior EMC robustness critical for industrial real-time control.
Availability
ISO7330CDWR is available at Aetrix Electronics and suitable for industrial fieldbus nodes, motor drive gate driver interfaces, servo control feedback paths, and battery management system communications requiring stable component supply across extended temperature and high-reliability cycles.
Supply support for ISO7330CDWR 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 and embedded processing technologies, with over 50 years of innovation in precision signal chain and power management solutions.
The ISO733x family was designed specifically for robust industrial isolation-targeting servo drives, PLC I/O modules, and renewable energy inverters where long-term reliability, high CMTI, and regulatory compliance are non-negotiable.
FAQ
What is the default output state of ISO7330CDWR during input power loss?
The ISO7330CDWR features a default-low fail-safe output configuration. When VCCI is lost or drops below the undervoltage lockout threshold (~2.4 V), all three outputs (OUTA, OUTB, OUTC) transition to logic low within 7 μs. This behavior ensures safe shutdown of downstream circuitry such as gate drivers or bus transceivers, and is inherent to the 'C' suffix (non-'F') variant of the ISO7330CDWR.
Does ISO7330CDWR support level translation between 3.3 V and 5 V domains?
Yes, ISO7330CDWR fully supports bidirectional level translation: VCCI can operate from 3 V to 5.5 V independently of VCCO, which also accepts 3 V to 5.5 V. This allows direct connection of a 3.3 V microcontroller I/O to INA/INB/INC while driving 5 V logic or isolated power supplies via OUTA/OUTB/OUTC-eliminating external level shifters in mixed-voltage industrial designs.
What is the meaning of the 'DWR' suffix in ISO7330CDWR?
The 'DWR' suffix denotes the packaging and environmental specification: 'DW' indicates the wide-body SOIC-16 package (10.3 mm × 7.5 mm), and 'R' specifies tape-and-reel packaging optimized for automated surface-mount assembly. This differs from 'DW' (tube) or 'DWG4' (green/lead-free) variants, but all share identical electrical characteristics, pinout, and isolation ratings.
Can ISO7330CDWR replace optocouplers in high-speed industrial interfaces?
Yes, ISO7330CDWR is engineered as a direct optocoupler replacement in high-speed applications: it delivers 25 Mbps data rate (vs. typical 1–10 Mbps for high-speed optos), 32 ns propagation delay (vs. 50–200 ns), and 70 kV/μs CMTI (vs. <10 kV/μs). Its capacitive isolation eliminates LED aging and provides guaranteed >25-year lifetime-making it ideal for ProfiBus, DeviceNet™, and servo control interfaces.
What safety certifications does ISO7330CDWR hold?
ISO7330CDWR is certified to multiple international safety standards: UL 1577 (3000 VRMS, 1 min), DIN V VDE V 0884-10 (4242 VPK, reinforced insulation), CSA Component Acceptance Notice 5A, IEC 61010-1, and GB4943.1-2011 (CQC). These approvals validate its use in medical, industrial, and energy infrastructure equipment requiring reinforced isolation barriers.
ISO7330CDWR 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:
- 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
ISO7330CDWR FAQ
1.How can I place an order for ISO7330CDWR through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7330CDWR 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 ISO7330CDWR reliable?
The price and inventory of ISO7330CDWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7330CDWR is usually 5 days.
3.What payment methods are accepted for ISO7330CDWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7330CDWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7330CDWR?
ISO7330CDWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7330CDWR 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 ISO7330CDWR?
For technical support, including ISO7330CDWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7330CDWR requirements.
6.How does Aetrix verify that ISO7330CDWR is sourced from the original manufacturer or authorized distributors?
All ISO7330CDWR 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 ISO7330CDWR meets industry standards.
7.What is the process for return or replacement of ISO7330CDWR?
All ISO7330CDWR units undergo pre-shipment inspection (PSI). If there is an issue with ISO7330CDWR, 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 ISO7330CDWR part is unused and in its original packaging.
Return procedure for ISO7330CDWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7330CDWR Tags
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SI8710AC-B-ISR
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SI8710CC-B-ISR
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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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