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33390 - Class B Serial Transceiver

Description

Pin 1 2 3 Pin Name SLEEP GND LOAD BUS VBAT 4X/LOOP Tx Rx Description Enables the transceiver when Logic 1 and disables the transceiver when Logic 0.

Device ground pin.

Accommodates an external pull-down resistor to ground to provide loss of ground protection.

Features

  • Designed for SAE J-1850 Class B Data Rates.
  • Full Operational Bus Dynamics Over a Supply Voltage of 9.0 to 16 V.
  • Ambient Operating Temperature of -40°C to 125°C.
  • Interfaces Directly to Standard 5.0 V CMOS Microcontroller.
  • BUS Pin Protected Against Shorts to Battery and Ground.
  • Thermal Shutdown with Hysteresis.
  • Voltage Waveshaping of Bus Output Driver.
  • 40 V Max VBAT Capability J-1850 SERIAL.

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Full PDF Text Transcription (Reference)

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Freescale Semiconductor, Inc. MOTOROLA SEMICONDUCTOR TECHNICAL DATA Document order number: MC33390/D Rev 4.0, 2/2003 33390 Class B Serial Transceiver The 33390 is a serial transceiver designed to provide bi-directional halfduplex communication meeting the automotive SAE Standard J-1850 Class B Data Communication Network Interface specification. It is designed to interface directly to on-board vehicle microcontrollers and serves to transmit and receive data on a single-wire bus at data rates of 10.4 kbps using Variable Pulse Width Modulation (VPWM). The 33390 operates directly from a vehicle's 12 V battery system and functions in a logic fashion as an I/O interface between the microcontroller's 5.0 V CMOS logic level swings and the required 0 V to 7.0 V waveshaped signal swings of the bus.
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