Six-channel CAN-bus isolator with 85 kV/µs CMTI
The Texas Instruments ISO7762QDBQQ1 is a six-channel digital isolator built around capacitive coupling technology, specifically characterised for CAN-bus isolation applications. It delivers 100 Mbps data rate across the isolation barrier while maintaining 3000 Vrms isolation voltage — enough for reinforced isolation in automotive traction inverters, battery management systems, and industrial motor drives. The 85 kV/µs common-mode transient immunity (CMTI) is the headline number here: it keeps the data path clean when IGBT or SiC switching edges slam the ground reference, a common failure point in inverter designs. Four channels go from Side 1 to Side 2, two go the other way, matching the bidirectional signalling pattern of a CAN transceiver interface.
AEC-Q100 qualification and 125°C junction rating
This part carries AEC-Q100 automotive qualification, meaning it has passed the full suite of stress tests — high-temperature operating life, temperature cycling, ESD, latch-up — required for under-hood and chassis-domain electronics.
Package, footprint, and layout notes
The ISO7762QDBQQ1 comes in a 16-pin SSOP package with 3.90 mm body width, a fine-pitch footprint that routes well on a two-layer board if the isolation creepage is managed. Surface-mount only. The 1.1 ns rise and 1.4 ns fall times are fast enough that signal-integrity matters — keep the trace length from the isolator output to the CAN transceiver under 20 mm, and place the decoupling capacitor within 2 mm of each supply pin. Pulse-width distortion is max 4.9 ns, and propagation delay is symmetrical at 16 ns max for both low-to-high and high-to-low transitions, which simplifies timing closure in the CAN bit-timing calculation.