33812 datasheet(19/25 Pages) FREESCALE

Part #	33812

Description	Multifunctional Ignition and Injector Driver

PDF	25 Pages

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33812

FUNCTIONAL DEVICE OPERATION

ISO-9141 TRANSCEIVER OPERATION

Bus I/O Pin (ISO9141)

This I/O pin represents the single-wire bus transmitter and

receiver.

Transmitter Characteristics

The ISO-9141 bus transmitter is a low side MOSFET with

internal over-current thermal shutdown. An internal pull-up

resistor with a serial diode structure is integrated so no

external pull-up components are required for the application

in a slave node.

Voltage can go from -18 V to 40 V without current supplied

from any other source than the pull-up resistance. The

ISO9141 pin exhibits no reverse current from the ISO9141

bus line to VPWR, even in the event of GND shift or VPWR

disconnection.

The transmitter has one slew rate (normal slew rate)

Receiver Characteristics

The receiver thresholds are ratiometric with the VPWR

supply pin.

33812 Datasheet(PDF) 19 Page - Freescale Semiconductor, Inc