Six-channel capacitive isolator for 100 Mbps CAN FD and automotive domains
The Texas Instruments ISO7762FQDBQRQ1 is a six-channel, unidirectional, capacitive-coupling digital isolator rated for CAN and other high-speed serial buses. It delivers a 100 Mbps data rate with 3000 Vrms isolation, packaged in a 16-pin SSOP (3.90 mm width).
100 Mbps with 16 ns propagation delay — timing margin for CAN FD
The 100 Mbps data rate and 16 ns max propagation delay (tpLH / tpHL) keep timing closure straightforward for CAN FD at 5 Mbps or for isolating SPI buses running at 20 MHz. The 1.1 ns rise and 1.4 ns fall times are fast enough to maintain signal integrity across the isolation barrier, but the unidirectional channel configuration (4 inputs on side 1, 2 on side 2) means you route the direction before layout — this is not a transceiver with a direction pin. Pulse-width distortion is held to 4.9 ns max, which preserves the duty cycle for CAN's bit-timing requirements. The 85 kV/µs common-mode transient immunity is the spec that matters in motor-drive or engine-bay environments where fast voltage transients couple across the barrier — this part survives those events without corrupting the data stream.
The supply range spans 2.25 V to 5.5 V on both sides, so you can run the CAN controller side at 3.3 V and the bus-side transceiver at 5 V without a separate level shifter. No isolated power is built in — you still need a separate DC/DC or isolated module to power the secondary side if the bus-side transceiver requires galvanically isolated supply.
It is AEC-Q100 qualified, which means it has passed the automotive-grade stress tests (high-temp operating life, temperature cycling, ESD, latch-up) required for under-hood and chassis-domain deployment.