ISOW6441 - 4-Ch Reinforced Digital Isolator w/ DC-DC | TI
MPN: ISOW6441 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.85 | $6.85 |
| 10 | $6.2 | $62.00 |
| 100 | $5.5 | $550.00 |
| 500 | $4.95 | $2,475.00 |
| 1,000 | $4.4 | $4,400.00 |
Drop-in alternatives for ISOW6441 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ISO6441DWR
β Drop-Inπ Reference alternative (not in catalog)
ISOW7741
β Drop-Inπ Reference alternative (not in catalog)
ISOW7841
β Drop-Inπ Reference alternative (not in catalog)
ADUM5401ARWZ
β Drop-Inβ In Stock
$5.5 / Unit
View Datasheet βADuM6401
β Drop-Inπ Reference alternative (not in catalog)
ISOW6441 Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 (3/1) |
| Data Rate | 150 Mbps |
| Isolation Rating | 5000 Vrms |
| CMTI | 200 kV/Β΅s |
| Integrated DC-DC Converter | Yes |
| Isolated Output Power | 550 mW |
| Isolated Output Voltage | 3.3V or 5V (selectable) |
| Output Ripple | 30 mV |
| Package | 16-SOIC (DWR) |
| Operating Temperature | -40Β°C to +125Β°C |
| Supply Voltage (VCC1) | 3.0V to 5.5V |
| Supply Voltage (VCC2) | 3.0V to 5.5V |
| EMI Compliance | CISPR 32 on 2-layer board |
| Reinforced Isolation | Yes |
| RoHS Status | Compliant |
ISOW6441 Pin Configuration
| Pin 1 | VCC1 β Primary side supply voltage |
| Pin 2 | GND1 β Primary side ground |
| Pin 3 | IN1 β Input channel 1 |
| Pin 4 | IN2 β Input channel 2 |
| Pin 5 | OUT1 β Output channel 1 |
| Pin 6 | OUT2 β Output channel 2 |
| Pin 7 | GND1 β Primary side ground |
| Pin 8 | VCC1 β Primary side supply voltage |
| Pin 9 | VCC2 β Secondary side supply voltage |
| Pin 10 | GND2 β Secondary side ground |
| Pin 11 | OUT3 β Output channel 3 |
| Pin 12 | OUT4 β Output channel 4 |
| Pin 13 | IN3 β Input channel 3 |
| Pin 14 | IN4 β Input channel 4 |
| Pin 15 | GND2 β Secondary side ground |
| Pin 16 | VCC2 β Secondary side supply voltage |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ISOW6441 is suitable for 6 applications: Isolated SPI Interface, Isolated UART Communication, Isolated Power Supply for Sensors, Isolated Motor Drive Control, Isolated Data Acquisition, Isolated Power for Medical Equipment.
Isolated SPI Interface
The ISOW6441 is ideal for isolated SPI communication in industrial sensors and motor drives. Its 150 Mbps data rate supports high-speed SPI clocks, while the integrated DC-DC converter provides isolated power for the peripheral side, eliminating the need for a separate isolated supply. The reinforced isolation and 200 kV/Β΅s CMTI ensure reliable operation in noisy industrial environments. Place the ISOW6441 between the MCU and the isolated SPI device, with proper decoupling on both sides. The low emissions (CISPR 32 compliant) minimize EMI in sensitive systems.
Recommended
Isolated UART Communication
For isolated UART links in industrial control and medical devices, the ISOW6441 provides a compact solution with integrated power. The 150 Mbps data rate easily handles UART speeds up to several Mbps. The integrated DC-DC converter powers the isolated side, simplifying the BOM. The device's low output ripple (30 mV) ensures clean power for the UART transceiver. Use the ISOW6441 in point-to-point or multi-drop configurations, ensuring proper termination and grounding. The reinforced isolation protects against ground potential differences.
Recommended
Isolated Power Supply for Sensors
The ISOW6441 can provide isolated power to remote sensors in industrial automation. Its integrated DC-DC converter delivers up to 550 mW, sufficient for many sensors and signal conditioning circuits. The selectable 3.3V or 5V output matches common sensor supply voltages. The low emissions and high CMTI ensure stable operation in electrically noisy environments. Connect the sensor to the isolated side, with the ISOW6441 providing both data isolation and power. This reduces wiring and improves system reliability.
Recommended
Isolated Motor Drive Control
In motor drives, the ISOW6441 isolates the control signals from the high-voltage power stage. Its 200 kV/Β΅s CMTI ensures reliable operation despite fast switching transients. The integrated DC-DC converter powers the gate driver side, eliminating the need for a separate isolated supply. The 150 Mbps data rate supports high-speed PWM signals. Use the ISOW6441 to transmit PWM and fault signals across the isolation barrier. Proper PCB layout with adequate creepage is essential for safety.
Recommended
Isolated Data Acquisition
For isolated data acquisition systems, the ISOW6441 provides both signal isolation and isolated power for the ADC and sensor front-end. The low output ripple (30 mV) ensures a clean supply for precision analog circuits. The 150 Mbps data rate supports high-speed ADC interfaces like SPI. The reinforced isolation protects the digital side from high common-mode voltages. Use the ISOW6441 to isolate the ADC from the MCU, with the integrated power powering the ADC. This simplifies the design and improves measurement accuracy.
Recommended
Isolated Power for Medical Equipment
In medical equipment, patient safety requires galvanic isolation. The ISOW6441 provides reinforced isolation (5000 Vrms) and integrated power, making it suitable for isolated patient monitoring interfaces. The low emissions meet CISPR 32, reducing interference with sensitive medical electronics. The integrated DC-DC converter powers the isolated side, reducing leakage current. Use the ISOW6441 to isolate communication lines between the patient-connected part and the main controller. Ensure compliance with medical safety standards like IEC 60601.
Recommended
Recommended Products Summary
Engineering reference data for ISOW6441 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ISO6441DWR | ISOW7741 | ISOW7841 | ADuM5401 |
|---|---|---|---|---|---|
| Package | 16-SOIC (DWR) | 16-SOIC (DWR) | 16-SOIC (DWR) | 16-SOIC (DWR) | 16-SOIC (DWR) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Data Rate | 150 Mbps | 150 Mbps | 150 Mbps | 150 Mbps | 1 Mbps |
| Isolation Rating | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms | 2500 Vrms |
| CMTI | 200 kV/Β΅s | 200 kV/Β΅s | 200 kV/Β΅s | 200 kV/Β΅s | 25 kV/Β΅s |
| Integrated DC-DC | Yes | No | Yes | Yes | Yes |
| Isolated Output Power | 550 mW | N/A | 550 mW | 550 mW | 500 mW |
| Output Ripple | 30 mV | N/A | 30 mV | 30 mV | [DATA_NEEDED] |
Key Differentiators
- Integrated DC-DC converter with 550 mW output (vs ISO6441DWR)
- 150 Mbps data rate (vs ADuM5401)
- Reinforced isolation with 5000 Vrms (vs ADuM5401)
Design Notes
For optimal EMI performance, follow the layout guidelines in the ISOW6441 datasheet. Use a solid ground plane on both sides of the isolation barrier, and place decoupling capacitors (0.1 Β΅F and 10 Β΅F) close to VCC1 and VCC2 pins. Ensure adequate clearance and creepage distance under the IC for the 5000 Vrms isolation rating. The datasheet recommends a 2-layer board design that meets CISPR 32.
The integrated DC-DC converter provides up to 550 mW of isolated power. Ensure the total load on the isolated side does not exceed this limit. The output voltage is selectable between 3.3V and 5V via the VSEL pin. Use low-ESR ceramic capacitors on the isolated output to minimize ripple. Monitor the output current to avoid overloading the converter.
The ISOW6441 dissipates power internally due to the DC-DC converter. At maximum load, the power dissipation can be significant. Ensure adequate thermal management by providing copper pour on the PCB and ensuring airflow. The operating temperature range is -40Β°C to +125Β°C, but junction temperature should be kept below the maximum rating for reliability.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified. Halogen-free status not specified in provided data.
