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Texas Instruments ISO7640FMDWR
- Part No.:
- ISO7640FMDWR
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISO7640FMDWR.pdf
- Description:
- DGTL ISO 4243VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,425
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Product details
Overview
ISO7640FMDWR from Texas Instruments is a quad-channel digital isolator with reinforced galvanic isolation up to 6000 VPK (4243 VRMS), 150 Mbps signaling rate, 7-ns typical propagation delay, and fail-safe low-state output configuration. It operates across dual independent supplies (VCCI and VCCO) at 2.7–5.5 V, supporting industrial fieldbus and servo control interfaces requiring high noise immunity and thermal robustness from –40°C to 125°C.
For engineers reviewing the ISO7640FMDWR datasheet, ISO7640FMDWR pinout, ISO7640FMDWR application, or ISO7640FMDWR equivalent, this page delivers verified electrical specs, SOIC-16 pin mapping, real-world use cases in motor control and isolated power supplies, and two validated alternative parts with documented functional and supply-voltage differences.
Technical Context
The ISO7640FMDWR implements four unidirectional forward channels separated by a silicon dioxide (SiO₂) isolation barrier certified for 5-KVRMS reinforced insulation per VDE 0884-10 and UL 1577. Each channel features TTL-compatible input thresholds, 5-V-tolerant inputs when powered from 2.7/3.3 V, and independent enable control via EN pin.
It supports asymmetric supply configurations (e.g., VCCI = 3.3 V / VCCO = 5 V), delivers 50 kV/µs typical common-mode transient immunity, and maintains fail-safe operation-driving all outputs low during input loss, power failure, or invalid logic states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 6000 VPK / 4243 VRMS for 1 min (UL 1577); 5-KVRMS reinforced (VDE 0884-10) |
| Signaling Rate | 150 Mbps maximum - enables high-speed serial links in Profibus and Modbus RTU |
| Propagation Delay | 7 ns typical - supports tight timing budgets in servo position feedback loops |
| Supply Range | VCCI and VCCO independently support 2.7 V to 5.5 V - allows mixed-voltage system interfacing |
| Fail-Safe Output | Outputs default to low state on power loss or input fault - prevents undefined states in safety-critical I/O |
| Transient Immunity | 50 kV/µs typical CMTI - sustains reliable operation in noisy motor drive environments |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial ambient conditions |
Pinout & Package
ISO7640FMDWR uses a wide-body SOIC-16 package (10.30 mm × 7.50 mm) with creepage/clearance optimized for reinforced isolation. Pin 1 is marked with a dot; pins 7 and 9 are NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA–IND | Input channels A–D | TTL-level logic inputs referenced to VCCI; 5-V tolerant when VCCI ≤ 3.3 V |
| OUTA–OUTD | Output channels A–D | CMOS outputs referenced to VCCO; driven low in fail-safe mode |
| EN | Global enable | High or open enables all four outputs; low disables all outputs to high-impedance state |
| VCCI | Input-side supply | Power for input buffers and logic; decoupling required near pin 1 |
| VCCO | Output-side supply | Power for output drivers; supports independent voltage from VCCI |
| GND1 | Input-side ground | Reference return for VCCI and INx signals; must be isolated from GND2 |
| GND2 | Output-side ground | Reference return for VCCO and OUTx signals; galvanically isolated from GND1 |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation | 5-KVRMS per VDE 0884-10 - meets end-equipment requirements for industrial PLCs and medical devices |
| Low-Power Operation | 2 mA typical ICC per channel at 25 Mbps (3.3-V supplies) - reduces thermal load in dense PCB layouts |
| Asymmetric Supply Support | VCCI and VCCO independently configurable (2.7/3.3/5 V) - simplifies interface between MCU and isolated ADC/DAC |
| High CMTI | 50 kV/µs typical - rejects fast transients from IGBT switching in motor inverters without data corruption |
| Fail-Safe Default | All outputs assert low on power loss or signal dropout - ensures safe shutdown in safety-rated motion control |
Applications
| Industrial Fieldbus Interface | Servo Motor Control |
|---|---|
Use Scenario: Isolating RS-485 transceivers in Profibus DP slave nodes operating in electrically noisy factory floors. IC Role / Device Role / Timing Role: Quad-channel digital isolator providing bidirectional data path separation between controller and bus PHY while maintaining <10 ns channel skew. Use Value: Enables 12 Mbps Profibus communication with immunity to ground-loop noise and 4 kV EFT bursts per IEC 61000-4-4. |
Use Scenario: Isolating position encoder feedback (A/B/Z quadrature signals) and PWM gate-drive commands in closed-loop servo drives. IC Role / Device Role / Timing Role: Forward-channel isolator for encoder signals and reverse-channel isolator for enable/fault signals across split-supply domains. Use Value: Guarantees sub-10 ns propagation matching between encoder channels to prevent position error accumulation at >100 kRPM. |
| Isolated DC-DC Feedback | Battery Management System |
Use Scenario: Transmitting error amplifier output from secondary-side TL431 shunt regulator to primary-side PWM controller in flyback converters. IC Role / Device Role / Timing Role: Low-latency, fail-safe isolator replacing optocoupler in voltage regulation loop with 7 ns propagation delay. Use Value: Improves transient response time by 3× vs. standard optocouplers, enabling tighter output voltage regulation under dynamic load steps. |
Use Scenario: Isolating cell voltage monitoring IC (e.g., BQ769x0) digital interface from host MCU in high-voltage EV battery packs (up to 800 V). IC Role / Device Role / Timing Role: Quad isolator separating I²C/SPI lines and alert signals between battery monitor and isolated microcontroller domain. Use Value: Meets reinforced insulation requirements per GB4943.1-2011 and CSA C22.2 No. 60950-1 for Class II equipment in battery systems. |
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 |
|---|---|---|---|
| ISO7740FMDWR | Higher CMTI (100 kV/µs), same 150 Mbps rate and SOIC-16 package; requires 3.3-V minimum supply | Better suited for ultra-noisy environments like traction inverters where dV/dt exceeds 50 kV/µs | Select ISO7740FMDWR when CMTI >75 kV/µs is mandated; not drop-in due to higher VCC min requirement |
| ADUM140D0BRWZ | Lower isolation rating (3.75 KVRMS), 100 Mbps max rate, same 4-forward-channel topology and SOIC-16 footprint | Approved for general industrial use but not reinforced insulation for medical or high-voltage battery systems | Choose ADUM140D0BRWZ for cost-sensitive non-safety-critical applications where 3.75-KVRMS suffices |
Compared with ISO7640FMDWR, ISO7740FMDWR offers superior noise rejection at higher supply voltage cost, while ADUM140D0BRWZ trades isolation strength and speed for broader availability and lower unit price in non-reinforced applications.
Availability
ISO7640FMDWR is available at Aetrix Electronics and suitable for industrial fieldbus, servo motor control, and isolated power supply designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production ramp.
Supply support for ISO7640FMDWR 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 ISO764xFM series was designed for high-speed, low-power galvanic isolation in noise-prone industrial automation systems - emphasizing reinforced safety certification, wide temperature operation, and fail-safe behavior for mission-critical I/O.
FAQ
What is the isolation voltage rating of ISO7640FMDWR?
The ISO7640FMDWR is rated for 6000 VPK (4243 VRMS) for 1 minute per UL 1577 and provides 5-KVRMS reinforced insulation per VDE 0884-10, EN/UL/CSA 60950-1, and GB4943.1-2011. This qualifies it for use in safety-critical industrial and medical end equipment where galvanic separation must withstand sustained overvoltage stress and transient surges.
Does ISO7640FMDWR support mixed supply voltages on VCCI and VCCO?
Yes, ISO7640FMDWR supports independent supply voltages on VCCI and VCCO across 2.7 V to 5.5 V each. Verified configurations include VCCI = 3.3 V / VCCO = 5 V and VCCI = 5 V / VCCO = 3.3 V, enabling seamless interfacing between 3.3-V microcontrollers and 5-V peripheral logic while maintaining full 150 Mbps data rate and isolation integrity.
What happens to the outputs of ISO7640FMDWR during power loss?
ISO7640FMDWR outputs default to low state in fail-safe mode - triggered by loss of VCCI, VCCO, or valid input signal. This behavior is inherent to the "F" suffix variant and ensures predictable, safe shutdown in motor control, power supply feedback, and battery monitoring systems where undefined output states could cause hazardous conditions.
Can ISO7640FMDWR replace optocouplers in existing designs?
Yes, ISO7640FMDWR is explicitly positioned as an optocoupler replacement in industrial fieldbus, servo control, and power supply applications. Its 7-ns propagation delay, 150 Mbps rate, and 50 kV/µs CMTI exceed typical optocoupler performance, and its SOIC-16 footprint enables direct PCB layout reuse when paired with isolated power supplies.
What is the maximum operating temperature for ISO7640FMDWR?
ISO7640FMDWR is specified for continuous operation from –40°C to +125°C junction temperature. This extended range supports deployment in under-hood automotive modules, industrial motor drives, and outdoor power electronics where ambient temperatures exceed 85°C and thermal derating must be minimized.
ISO7640FMDWR 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:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 4243Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 10.5ns, 10.5ns
- Pulse Width Distortion (Max):
- 2ns
- Rise / Fall Time (Typ):
- 1.6ns, 1ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ISO7640FMDWR FAQ
1.How can I place an order for ISO7640FMDWR through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7640FMDWR 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 ISO7640FMDWR reliable?
The price and inventory of ISO7640FMDWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7640FMDWR is usually 5 days.
3.What payment methods are accepted for ISO7640FMDWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7640FMDWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7640FMDWR?
ISO7640FMDWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7640FMDWR 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 ISO7640FMDWR?
For technical support, including ISO7640FMDWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7640FMDWR requirements.
6.How does Aetrix verify that ISO7640FMDWR is sourced from the original manufacturer or authorized distributors?
All ISO7640FMDWR 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 ISO7640FMDWR meets industry standards.
7.What is the process for return or replacement of ISO7640FMDWR?
All ISO7640FMDWR units undergo pre-shipment inspection (PSI). If there is an issue with ISO7640FMDWR, 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 ISO7640FMDWR part is unused and in its original packaging.
Return procedure for ISO7640FMDWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7640FMDWR Tags
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ISO1212DBQR
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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ISO7721FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
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