http://faq.ford77.ru/pdf/eec/DataSheet.pdf

FEATURES:
Operating Voltage 5.0 V
Operating Current 5 Ma. Typ
Clock: 20 MHz
Inputs: (0-5V levels)
Serial Input (19200 Baud)
PWM receive
VPW receive
ISO 9141-2
Outputs (0-5V levels)
Serial output (19200 Baud)
PWM transmit bus+ (inverted)
PWM transmit bus- (inverted)
VPW transmit
ISO 9141-2 L line transmit (inverted)
ISO 9141-2 K line transmit (inverted)

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