ISO6442 - 4-Channel Digital Isolator 150Mbps | Texas Instruments
MPN: ISO6442 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
Drop-in alternatives for ISO6442 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ISO6442DWR
✅ Drop-In📋 Reference alternative (not in catalog)
ISO6442DBQR
✅ Drop-In📋 Reference alternative (not in catalog)
ISO6442FDBQR
✅ Drop-In📋 Reference alternative (not in catalog)
ISO6442-Q1
✅ Drop-In✓ In Stock
$2.25 / Unit
View Datasheet →ISO6762FDWR
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →ISO7721BDWR
✅ Drop-In✓ In Stock
$1.75 / Unit
View Datasheet →ISO7842FDWW
✅ Drop-In✓ In Stock
$2.19 / Unit
View Datasheet →ISO7321CDR
✅ Drop-In✓ In Stock
$1.2 / Unit
View Datasheet →ISO6442 Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 |
| Channel Configuration | 2/2 (2 forward, 2 reverse) |
| Isolation Rating | Reinforced/Basic |
| Isolation Voltage (DWR) | 5000 Vrms |
| Isolation Voltage (DBQ) | 3000 Vrms |
| Data Rate | 150 Mbps |
| CMTI | 250 kV/µs |
| Supply Voltage Range | 2.25 V to 5.5 V |
| Working Voltage | 1060 Vrms |
| Package Options | 16-SOIC (DWR), 16-SSOP (DBQ) |
| Operating Temperature Range | -40°C to +125°C |
| Enable Pin | Yes |
| Fail-Safe Output | Yes |
| Automotive Grade | Available (ISO6442-Q1) |
| RoHS Status | Compliant |
ISO6442 Pin Configuration
| Pin 1 | VCC1 — Supply voltage for side 1 |
| Pin 2 | GND1 — Ground for side 1 |
| Pin 3 | INA — Input channel A |
| Pin 4 | INB — Input channel B |
| Pin 5 | OUTC — Output channel C |
| Pin 6 | OUTD — Output channel D |
| Pin 7 | EN1 — Enable for side 1 outputs |
| Pin 8 | GND1 — Ground for side 1 |
| Pin 9 | GND2 — Ground for side 2 |
| Pin 10 | EN2 — Enable for side 2 outputs |
| Pin 11 | INC — Input channel C |
| Pin 12 | IND — Input channel D |
| Pin 13 | OUTA — Output channel A |
| Pin 14 | OUTB — Output channel B |
| Pin 15 | GND2 — Ground for side 2 |
| Pin 16 | VCC2 — Supply voltage for side 2 |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ISO6442 is suitable for 6 applications: Industrial Fieldbus Communication, Motor Drives, Power Inverters, Isolated SPI Interface, Battery Management Systems, On-Board Chargers.
Industrial Fieldbus Communication
The ISO6442 provides galvanic isolation for industrial fieldbus interfaces such as PROFIBUS, Modbus, and CAN. Its high data rate of 150 Mbps and CMTI of 250 kV/µs ensure reliable communication in noisy factory environments. The device isolates the controller from the bus transceiver, preventing ground loops and protecting sensitive electronics from voltage transients. With a supply voltage range of 2.25 V to 5.5 V, it interfaces directly with 3.3 V and 5 V logic. The reinforced isolation rating (5000 Vrms) meets safety requirements for industrial equipment. The ISO6442's robust EMC performance minimizes the risk of data corruption, making it ideal for long-distance fieldbus networks.
Recommended
Motor Drives
In motor drive systems, the ISO6442 isolates the control circuitry from the high-voltage power stage. Its high CMTI of 250 kV/µs ensures reliable operation in the presence of fast switching transients from IGBTs or MOSFETs. The device can transmit PWM signals at up to 150 Mbps, supporting high-frequency switching. The reinforced isolation rating provides protection against voltage spikes and ground potential differences. The ISO6442's wide supply voltage range allows it to interface with both the low-voltage control side and the high-voltage gate driver side. Its robust EMC performance reduces the risk of false triggering, improving system reliability. The automotive-grade variant (ISO6442-Q1) is suitable for electric vehicle motor drives.
Recommended
Power Inverters
The ISO6442 is used in power inverters to isolate control signals from the high-voltage DC bus. Its high data rate and CMTI enable reliable transmission of PWM signals to gate drivers. The reinforced isolation rating (5000 Vrms) provides safety isolation for personnel and equipment. The device operates over a wide temperature range (-40°C to +125°C), suitable for harsh environments. The ISO6442's low propagation delay ensures accurate timing in inverter control loops. Its robust EMC performance minimizes electromagnetic interference, improving system efficiency. The automotive-grade version is ideal for traction inverters in electric vehicles.
Recommended
Isolated SPI Interface
The ISO6442 is ideal for isolating SPI buses between microcontrollers and peripheral devices such as ADCs, DACs, and sensors. Its 150 Mbps data rate supports high-speed SPI communication, while the 2/2 channel configuration accommodates the MOSI, MISO, SCK, and CS signals. The device provides galvanic isolation to prevent ground loops and protect sensitive components. The wide supply voltage range allows level shifting between different logic domains. The ISO6442's high CMTI ensures reliable operation in noisy industrial environments. The enable pin can be used to disable the outputs during power-up or fault conditions. The reinforced isolation rating meets safety requirements for medical and industrial equipment.
Recommended
Battery Management Systems
In battery management systems (BMS), the ISO6442 isolates the high-voltage battery pack from the low-voltage control electronics. Its high CMTI ensures reliable communication in the presence of switching noise from battery chargers and converters. The device supports data rates up to 150 Mbps, enabling fast communication between the BMS controller and cell monitoring ICs. The automotive-grade variant (ISO6442-Q1) is AEC-Q100 qualified, meeting the stringent requirements of automotive BMS. The reinforced isolation rating provides safety isolation for high-voltage systems. The ISO6442's wide operating temperature range (-40°C to +125°C) is suitable for automotive environments. Its robust EMC performance ensures reliable operation in the presence of electromagnetic interference.
Recommended
On-Board Chargers
The ISO6442 is used in on-board chargers (OBC) for electric vehicles to isolate the control circuitry from the high-voltage power stage. Its high data rate and CMTI enable reliable transmission of PWM signals to the power converters. The automotive-grade variant (ISO6442-Q1) is AEC-Q100 qualified, ensuring reliability in automotive applications. The reinforced isolation rating provides safety isolation for high-voltage systems. The device operates over a wide temperature range, suitable for under-hood environments. The ISO6442's robust EMC performance minimizes electromagnetic interference, improving system efficiency. Its low propagation delay ensures accurate timing in power conversion loops.
Recommended
Recommended Products Summary
Engineering reference data for ISO6442 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ISO6442DWR | ISO6442DBQR | ISO6442FDBQR | ISO6442-Q1 | ISO6762FDWR | ISO7721BDWR | ISO7842FDWW | ISO7321CDR |
|---|---|---|---|---|---|---|---|---|---|
| Package | 16-SOIC (DWR) / 16-SSOP (DBQ) | 16-SOIC (DWR) | 16-SSOP (DBQ) | 16-SSOP (DBQ) | 16-SOIC (DWR) | 16-SOIC (DWR) | 16-SOIC (DWR) | 16-SOIC (DWR) | 16-SOIC (DWR) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Channels | 4 | 4 | 4 | 4 | 4 | 6 | 2 | 4 | 3 |
| Channel Configuration | 2/2 | 2/2 | 2/2 | 2/2 | 2/2 | 4/2 | 1/1 | 4/0 | 2/1 |
| Data Rate | 150 Mbps | 150 Mbps | 150 Mbps | 150 Mbps | 150 Mbps | 50 Mbps | 100 Mbps | 100 Mbps | 25 Mbps |
| CMTI | 250 kV/µs | 250 kV/µs | 250 kV/µs | 250 kV/µs | 250 kV/µs | 100 kV/µs | 100 kV/µs | 100 kV/µs | 100 kV/µs |
| Isolation Voltage | 5000 Vrms (DWR) / 3000 Vrms (DBQ) | 5000 Vrms | 3000 Vrms | 3000 Vrms | 5000 Vrms | 5000 Vrms | 3000 Vrms | 5000 Vrms | 3000 Vrms |
| Automotive Grade | Available (ISO6442-Q1) | No | No | No | Yes | No | No | No | No |
Key Differentiators
- High data rate of 150 Mbps (vs ISO6762FDWR)
- High CMTI of 250 kV/µs (vs ISO7721BDWR)
- Reinforced isolation up to 5000 Vrms (vs ISO7321CDR)
Design Notes
Maintain proper creepage and clearance distances on the PCB to meet the isolation rating. For 5000 Vrms isolation, ensure at least 8 mm creepage and 8 mm clearance between the high-voltage and low-voltage sides. Use a PCB material with adequate CTI (Comparative Tracking Index) rating. Place the isolation barrier components (e.g., capacitors) symmetrically to balance parasitic coupling.
Bypass each supply pin (VCC1 and VCC2) with a 0.1 µF ceramic capacitor placed as close as possible to the pin. Additionally, use a 10 µF bulk capacitor on each side to handle transient currents. The ISO6442's supply current is typically a few milliamps, but high-speed switching can cause current spikes. Proper decoupling ensures stable operation and reduces EMI.
Do not exceed the absolute maximum ratings for supply voltage (7 V) or input/output voltage. Ensure the enable pins are properly driven; floating enable pins can cause undefined output states. When using the fail-safe feature, note that the default output state is low. Verify the channel configuration (2/2) matches your signal direction requirements before layout.
Compliance Information
RoHS compliant per TI product page. Automotive grade available as ISO6442-Q1.
