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Texas Instruments ISO7741FQDWWRQ1 — Digital Isolators

ISO7741FQDWWRQ1 Automotive Digital Isolator, 100Mbps

MPNISO7741FQDWWRQ1
Active

Texas Instruments ISO7741FQDWWRQ1, Automotive Grade, General Purpose, 4-Channel Digital Isolator, Capacitive Coupling, 100Mbps Data Rate, 5700Vrms Isolation, 2.25V to 5.5V Supply, -40°C to 125°C, 16-SOIC Wide Package.

$5.2700Ref. price · indicative, final on quote
Packaging16-SOIC (0.551", 14.00mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ISO7741FQDWWRQ1 key specifications
ParameterValue
TypeGeneral Purpose
Channel typeUnidirectional
MountingSurface Mount
Supply voltage2.25V ~ 5.5V
Voltage - isolation5700Vrms
Isolated powerNo
Operating temperature-40°C ~ 125°C
Pulse width distortion4.9ns
GradeAutomotive
PackageTape & Reel (TR) Cut Tape (CT)
Data rate100Mbps
TechnologyCapacitive Coupling

All specifications

ISO7741FQDWWRQ1 additional specifications
ParameterValue
QualificationAEC-Q100
Case16-SOIC (0.551\", 14.00mm Width)
Channels4
Inputs - side 1/Side 23/1
Rise (Fall time)2.4ns, 2.4ns
Propagation delay tpLH (tpHL)16ns, 16ns
Common mode transient immunity85kV/µs

Product details

The 100Mbps data rate handles SPI, UART, and CAN FD isolation requirements typical in automotive sensor and actuator interfaces. Propagation delay is 16ns max (tpLH / tpHL), with pulse-width distortion held to 4.9ns max — tight enough for timing-sensitive links like isolated SPI clock and data.

Channel configuration and package

The device provides 3 channels on side 1 and 1 channel on side 2, all unidirectional. This 3/1 split suits applications like isolated SPI (SCLK, MOSI, CS from the controller side, MISO returning) or isolated UART (TX, RX plus a control signal). The 16-SOIC wide-body package (0.551" body width, 14.00mm) provides the creepage distance needed for 5700Vrms reinforced isolation in a surface-mount footprint. Rise and fall times are 2.4ns typical, keeping signal edges clean at 100Mbps.

Frequently asked questions

Is ISO7741FQDWWRQ1 AEC-Q100 qualified?

Yes, the part is AEC-Q100 qualified, confirming its suitability for automotive-grade designs including under-hood and cabin environments.

Can ISO7741FQDWWRQ1 be used in 5V systems?

Yes. The supply range spans 2.25V to 5.5V, so the part operates directly on both 3.3V and 5V rails without an external level translator.

What are the key differences between ISO7741FQDWWRQ1 and other digital isolators?

The ISO7741FQDWWRQ1 uses capacitive coupling rather than magnetic or optical isolation, offering 5700Vrms isolation with 85kV/µs CMTI in a 16-SOIC wide package. The 3/1 channel split and 100Mbps data rate target automotive SPI and UART isolation specifically. AEC-Q100 qualification distinguishes it from industrial-grade siblings in the ISO7741 family.