Model No: ISO7741QDWRQ1
Texas Instruments ISO7741QDWRQ1
Manufacturer: Texas Instruments
SEMICON NO.: ISO7741QDWRQ1
Package: 16-SOIC
Stock: In stock
Description: Digital Isolator 5000Vrms 4 Channel 100Mbps
SEMICON NO.: ISO7741QDWRQ1
Package: 16-SOIC
Stock: In stock
Description: Digital Isolator 5000Vrms 4 Channel 100Mbps
Quantity :
| Mfr | Texas Instruments |
| Device Type | Quad-Channel Digital Isolator |
| Isolation Technology | Capacitive Coupling (SiO₂ insulation barrier) |
| Isolation Rating | 5000 Vrms |
| Working Voltage | 1500 Vrms |
| Surge Isolation Voltage | Up to 12.8 kVPK |
| Common Mode Transient Immunity (CMTI) | 85 kV/µs (Minimum) / ±100 kV/µs (Typical) |
| Number of Channels | 4 |
| Channel Direction Configuration | 3 Forward / 1 Reverse (3/1) |
| Default Output | High (non-F suffix) |
| Data Rate (Max) | 100 Mbps |
| Supply Voltage | 2.25 V to 5.5 V |
| Operating Temperature | –40°C to +125°C |
| Package | 16-SOIC |
| Mounting Type | Surface Mount |
| Compliance | RoHS Compliant |
The ISO7741QDWRQ1 is a quad-channel automotive-qualified digital isolator from Texas Instruments featuring 3 forward and 1 reverse signal channels, 100Mbps data rate, and 5000Vrms galvanic isolation capability in a 16-pin wide-body SOIC package. Utilizing TI's capacitive isolation technology with silicon dioxide (SiO2) dielectric, this device provides 1500Vrms working voltage with >30-year projected insulation lifetime, supporting both isolated 5V and 3.3V logic domains with 2.25V to 5.5V supply operation on both sides. The isolator achieves 85kV/µs typical common-mode transient immunity (CMTI), 5.7ns typical propagation delay, and 2.6ns maximum pulse width distortion, delivering high-speed signal integrity for automotive and industrial systems requiring robust galvanic isolation between high-voltage and low-voltage domains.
Applications
The ISO7741QDWRQ1 targets automotive and industrial applications requiring galvanic isolation of digital signals between high-voltage and low-voltage domains. Primary automotive applications include isolation in HEV/EV traction inverters, on-board chargers (OBC), 48V mild hybrid systems, battery management systems (BMS), and isolated gate driver interfaces for SiC/IGBT power stages. The device excels in isolated CAN, SPI, and UART communication interfaces between vehicle control units and power electronics modules. Industrial applications include servo motor drives, PLC digital I/O modules, solar inverter control interfaces, grid infrastructure communication, and isolated sensor interfaces in factory automation systems requiring 5000Vrms reinforced insulation capability.
FAQ
Q: How does capacitive isolation compare to optocoupler isolation?
A: Capacitive SiO2 isolation provides longer lifetime, higher CMTI, lower power consumption, and faster propagation delay than optocoupler technology without LED aging degradation.
Q: Can the two sides operate at different supply voltages?
A: Yes, VCC1 and VCC2 independently accept 2.25V to 5.5V, enabling voltage translation between 3.3V and 5V logic domains.
Alternative Digital Isolator Models
1. ISO7741FQDWQ1 (Texas Instruments): The default output HIGH variant with identical 3/1 channel configuration and specifications for fail-safe high logic designs.
2. ISO7742QDWQ1 (Texas Instruments): A 2/2 channel configuration variant with two forward and two reverse channels for bidirectional bus applications like isolated UART.
3. ISO7740QDWQ1 (Texas Instruments): A 4/0 channel all-forward variant for unidirectional multi-signal isolation without reverse channels.
Applications
The ISO7741QDWRQ1 targets automotive and industrial applications requiring galvanic isolation of digital signals between high-voltage and low-voltage domains. Primary automotive applications include isolation in HEV/EV traction inverters, on-board chargers (OBC), 48V mild hybrid systems, battery management systems (BMS), and isolated gate driver interfaces for SiC/IGBT power stages. The device excels in isolated CAN, SPI, and UART communication interfaces between vehicle control units and power electronics modules. Industrial applications include servo motor drives, PLC digital I/O modules, solar inverter control interfaces, grid infrastructure communication, and isolated sensor interfaces in factory automation systems requiring 5000Vrms reinforced insulation capability.
FAQ
Q: How does capacitive isolation compare to optocoupler isolation?
A: Capacitive SiO2 isolation provides longer lifetime, higher CMTI, lower power consumption, and faster propagation delay than optocoupler technology without LED aging degradation.
Q: Can the two sides operate at different supply voltages?
A: Yes, VCC1 and VCC2 independently accept 2.25V to 5.5V, enabling voltage translation between 3.3V and 5V logic domains.
Alternative Digital Isolator Models
1. ISO7741FQDWQ1 (Texas Instruments): The default output HIGH variant with identical 3/1 channel configuration and specifications for fail-safe high logic designs.
2. ISO7742QDWQ1 (Texas Instruments): A 2/2 channel configuration variant with two forward and two reverse channels for bidirectional bus applications like isolated UART.
3. ISO7740QDWQ1 (Texas Instruments): A 4/0 channel all-forward variant for unidirectional multi-signal isolation without reverse channels.
