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MC33990 Datasheet Enhanced Class B Serial Transceiver

Manufacturer: Freescale Semiconductor (now NXP Semiconductors)

Overview: .. Freescale Semiconductor Advance Information Document Number: MC33990 Rev 3.0, 11/2006 Enhanced Class B Serial Transceiver The 33990 is a serial transceiver designed to provide bi-directional half-duplex munication meeting the automotive SAE Standard J1850 Class B Data munication 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 33990 operates directly from a vehicle's 12 V battery system and functions in a true 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. The bus output driver is short circuit current limited.

Key Features

  • Designed for SAE J-1850 Class B Data Rates.
  • Full Operational Bus Dynamics Over a Supply Voltage of 9.0 V 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.
  • Internally Reverse Battery Protected.
  • 40 V Max VBAT Capability.

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MC33990 Distributor