33390

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


Pinout




Specifications

Rating	Symbol	Value	Unit
VBAT DC Supply Voltage (Note 1)	VBAT	-0.3 to 40	V
Input I/O Terminals (Note 2)	VI/O(CPU)	-0.3 to 7.0	V
BUS and LOAD Outputs	VBUS	-2.0 to 16	V
ESD Voltage Human Body Model (Note 3) Machine Model (Note 4)	VESD1 VESD2	±2000 ±200	V
Storage Temperature	TSTG	-65 to 150
Operating Ambient Temperature	TA	-40 to 125
Operating Junction Temperature	TJ	-40 to 150
Soldering Temperature (for 10 seconds)	TSOLDER	260
Thermal Resistance (Junction-to-Ambient)	RJ-A	180	/W

Notes
1. An external series diode must be used to provide reverse battery protection of the device.
2. SLEEP, TX, RX, and 4X/LOOP are normally connected to a microcontroller.
3. ESD1 testing is performed in accordance with the Human Body Model (CZAP=100 pF, RZAP=1500 ).
4. ESD2 testing is performed in accordance with the Machine Model (CZAP=200 pF, RZAP=0 ).


Description

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. The bus output driver is short circuit current limited.