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U642B, U642BD, U642BD83

Table of contents:
Info of U642B
Info of U642BD
Info of U642BD83

U642B, U642BD, U642BD83 Selling Leads, Datasheet

MFG:TFK Package Cooled:DIP-8 D/C:95+

U642B, U642BD, U642BD83 Datasheet download

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Part Number: U642B

MFG: TFK

Package Cooled: DIP-8

D/C: 95+

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U642B General Description

As a convenience feature of the windshield wiper intermittent and wipe/wash operation are implemented in most of the automobiles. The U642B is the low-cost solution for an accurate timing function control. Wipe/wash mode has priority over interval mode. Interval pause and afterwiping time can be set to fixed values by using resistors in a broad time range. Added value can be provided with an individual, continuous adjustment of the interval pause by a potentiometer which may be built into the stalk. For proper operation it is mandatory to feed the signal of the wiper motor's park switch into U642B.

U642B Maximum Ratings

Parameters	Symbol	Value	Unit
Supply voltage t = 60 s Terminal 15, Pin 8	V_Batt	28	V
Supply current t = 2 ms Pin 8 t = 200 ms	I₈ I₈	1.5 150	A mA
Relay control output current (DC) Pin 7 t = 200 ms	I₇ I₇	200 1.2	A mA
Pulse current (control inputs) t = 200 ms
Park switch, S₁ Pin 6 Wipe/Wash switch, S₃ Pin 5 Interval switch, S₂ Pin 2	I₆ I₅ I₂	50 50 50	mA
Power dissipation T_amb = 90°C	P_tot	500	mW
Storage temperature range	T_stg	-55to+125
Ambient temperature range	T_amb	-40to+85

U642B Features

` Interval pause: 4 to 20 s
` Afterwiping time: 2 to 20 s
` Wiper motor's park switch
` Wipe/wash mode priority
` One external capacitor, determines all time sequences
` Relay driver with Z-diode
` Interference protection according to VDE 0839 or ISO/TR 7637/1
` Load-dump protected

U642B Connection Diagram

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