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U642B PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 U642B
部品説明 Automotive Wipe/Wash or Interval Switch
メーカ TEMIC Semiconductors
ロゴ TEMIC Semiconductors ロゴ 



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U642B Datasheet, U642B PDF,ピン配置, 機能
Automotive Wipe/Wash or Interval Switch
U642B
Description
As a convenience feature of the windshield wiper inter-
mittent and wipe/wash operation are implemented in
most of the automobiles. The U642B controls all timing
functions accurately at a reasonable price level. Interval
pause and afterwiping time can be set to fixed values with
the help of resistors in a broad time range. Added value
can be provided with an individual, continuous adjust-
ment 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.
Features
D Interval pause: 4 to 20 s
D Afterwiping time: 2 to 20 s
D Wiper motor’s park switch
D Wipe/wash mode priority
D One external capacitor, determines all time sequences
D Relay driver with Z-diode
D Interference protection according to VDE 0839 or
ISO/TR 7637/1
D Load-dump protected
Ordering Information
Extended Type Number
U642B
U642B–FP
Block Diagram
VS
8
Package
DIP8
SO8
Relay control
7
Load-dump
comparator
Remarks
S1
6
VRef
WI WA
5
VRef
Park switch Input
comparator comparator
VRef
VRef
Logic
Wipe / wash
comparator
Interval
comparator
A
B
C
DE
F
1
GND
TELEFUNKEN Semiconductors
Rev. A1, 13-Feb-97
23
Interval switch Timing (C2)
Figure 1. Block diagram
4
Timing (R)
94 8950
1 (6)

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