The product is MC33990 series, which is applied to farm equipment, industrial equipment, robotic systems, automotive systems, etc. It supports LIN, ISO-9141, and J-1850 three communication protocols, which can reduce system costs, reduce external connections, and have smaller size and faster design cycle
The MC33990 is a half‑duplex serial link transceiver that meets the automotive SAE J‑1850 Class B specification. It interfaces directly to 5 V CMOS microcontrollers and converts logic levels to a 0‑7 V waveform for reduced radiated EMI. The device operates from a 12 V vehicle battery or board‑level DC supply and supports a data rate of up to 10.4 kB/s (typical values up to 20 kB/s). Features include a tristateable 4X/Loop pin for normal, disabled, or loop‑back operation and enhanced protection against double‑fault conditions.
Typical applications cover farm equipment, industrial machinery, robotic systems, automotive networks, as well as marine and aircraft communication links. Motorola provides worldwide support and distribution channels for the MC33990, with contact information listed for North America, Europe, Japan, and Asia‑Pacific.
| Operating Voltage | 9.0 – 16 V |
|---|---|
| Sleep/Standby Current | 20 µA |
| ESD Protection | ±2000 V |
| Operating Temperature | -40 °C ≤ TA ≤ 125 °C |
| Bus Output | J‑1850 VPWM |
It uses the automotive SAE J‑1850 Class B data communication network protocol.
It shapes the bus signal with controlled voltage and current pulses, and the waveshaping can be disabled or looped back for diagnostics.