Six-channel CAN isolator with AEC-Q100 grade for automotive and industrial bus isolation
The Texas Instruments ISO7762QDBQRQ1 is a six-channel, unidirectional digital isolator built on capacitive-coupling technology, designed for CAN bus isolation and other high-speed serial interfaces in automotive and industrial environments. It carries AEC-Q100 qualification, making it suitable for under-hood and chassis-domain applications where reliability screening is required. The part provides 3000 Vrms galvanic isolation with a 100 Mbps data rate, supporting CAN FD and other fast serial protocols without bottlenecking the bus.
The 100 Mbps data rate gives headroom for CAN FD at 5 Mbps or even 10 Mbps without timing pressure. Propagation delay is 16 ns max in both directions, which keeps the bus turnaround tight — important for arbitration in multi-node CAN networks. Common-mode transient immunity of 85 kV/µs minimum means this isolator handles the fast voltage swings from motor-drive inverters or solenoid switching without corrupting the data. Pulse-width distortion is held to 4.9 ns max, preserving signal symmetry through the isolation barrier. The 3000 Vrms isolation rating is the basic insulation level for automotive and industrial systems; it provides margin for 48 V or 400 V battery stacks when used in a reinforced insulation scheme with proper creepage on the PCB. The 1.1 ns typical rise and 1.4 ns fall times are fast enough for 100 Mbps but still controlled enough to avoid excessive EMI with a short trace.
Supply rails and decoupling for the SSOP-16
A 0.1 µF ceramic cap close to each supply pin (pins 1 and 16) is sufficient for decoupling; the capacitive-coupling architecture doesn't draw large transient currents like an optocoupler would. The 16-SSOP package has a 0.154-inch (3.90 mm) body width with 0.0256-inch (0.65 mm) pitch — standard for hand assembly with a fine-tip iron. No exposed thermal pad, so dissipation is through the leads only; at 125°C ambient, keep the total package dissipation under about 150 mW.