ISO 11898 CAN Bus Modules from China: Transceivers & Gateways
1 resources tagged with "Iso 11898"
ISO 11898 is the standard defining CAN bus physical and data-link layers, the baseline for sourcing CAN transceivers, interface modules, and OBD-II gateways from China. The parts that matter are AEC-Q100-qualified transceivers for automotive use and CAN FD support if you need the higher data rates, with 250 and 500 kbps being the common fixed-baud variants. We verify the transceiver part is the genuine AEC-Q100 grade rather than a relabeled commercial part, which is a frequent substitution on cost-driven CAN boards.
ISO 11898 governs how CAN nodes signal on a two-wire differential bus with 120-ohm termination. The pitfall is a Chinese CAN board using an unqualified transceiver or missing proper termination, causing bus errors under load — so we check the IC marking and termination against the schematic.
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FAQ
What is the difference between classic CAN and CAN FD?
Classic CAN under ISO 11898-1 maxes out around 1 Mbps with an 8-byte payload; CAN FD extends the payload to 64 bytes and raises the data-phase bit rate. Confirm which your application needs, since the transceiver and controller must both support FD.
Why does AEC-Q100 matter on a CAN transceiver?
AEC-Q100 is the automotive qualification for ICs covering temperature, ESD, and reliability stress. A relabeled commercial-grade transceiver may work on the bench but fail under cabin temperature cycling, so verify the genuine qualified part on automotive projects.
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