MCZ33290-ISO K Line Serial Link Interface The 33290 is a serial link bus interface device designed to provide bi-directional half-duplex communication interfacing in automotive diagnostic applications. It is designed to interface between the vehicle’s on-board microcontroller and systems off-board the vehicle via the special ISO K line. The 33290 is designed to meet the Diagnostic Systems ISO9141 specification. The device’s K line bus driver’s output is fully protected against bus shorts and overtemperature conditions.The 33290 derives its robustness to temperature and voltage extremes by being built on a SMARTMOS process, incorporating CMOS logic, bipolar/MOS analog circuitry, and DMOS power FETs. Although the 33290 was principally designed for automotive applications, it is suited for other serial communication applications.
Features • Operates Over Wide Supply Voltage of 8.0 to 18 V • Operating Temperature of -40 to 125 ° C • Interfaces Directly to St andard CMOS Microprocessors • ISO K Line Pin Protected Against Shorts to Ground • Thermal Shutdown with Hysteresis • ISO K Line Pin Capable of High Currents • ISO K Line Can Be Driven with up to 10 nF of Parasitic Capacitance • 8.0 kV ESD Protection Attainable with Few Additional Components • Standby Mode: No VBat Current Drain with VDD at 5.0 V • Low Current Drain During Operation with VDD at 5.0 V • Pb-Free Packaging Designated by Suffix Code EF
Datasheet
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