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What is U642B?

This electronic component, produced by the manufacturer "TEMIC Semiconductors", performs the same function as "Automotive Wipe/Wash or Interval Switch".


U642B Datasheet PDF - TEMIC Semiconductors

Part Number U642B
Description Automotive Wipe/Wash or Interval Switch
Manufacturers TEMIC Semiconductors 
Logo TEMIC Semiconductors Logo 


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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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U642B equivalent
Package Information
Package DIP8
Dimensions in mm
9.8
9.5
1.64
1.44
7.77
7.47
4.8 max
0.5 min 3.3
0.58
0.48 2.54
7.62
85
6.4 max
0.36 max
9.8
8.2
U642B
technical drawings
according to DIN
specifications
13021
14
Package SO8
Dimensions in mm
5.00
4.85
5.2
4.8
3.7
1.4
0.4
0.25 0.2
0.10 3.8
1.27 6.15
3.81 5.85
85
technical drawings
according to DIN
specifications
85
13034
TELEFUNKEN Semiconductors
Rev. A1, 13-Feb-97
5 (6)


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for U642B electronic component.


Information Total 6 Pages
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Featured Datasheets

Part NumberDescriptionMFRS
U642BThe function is Automotive Wipe/Wash or Interval Switch. TEMIC SemiconductorsTEMIC Semiconductors
U642BThe function is Interval- and Wipe/ Wash Wiper Control IC. ATMEL CorporationATMEL Corporation
U642B-FPThe function is Interval- and Wipe/ Wash Wiper Control IC. ATMEL CorporationATMEL Corporation

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