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參數(shù)資料
| 型號： | E910.33 |
| 廠商： | ELMOS SEMICONDUCTOR AG |
| 英文描述： | Contact monitor (8 channel to GND, parallel interface) |
| 中文描述： | 聯(lián)系顯示器（8聲道到GND，并行接口） |
| 文件頁數(shù)： | 1/1頁 |
| 文件大小： | 87K |
| 代理商： | E910.33 |
BUS IC
DC/DC CONVERTER
MOTOR DRIVER IC
RIPPLE COUNTER
66
BLOCK DIAGRAM
Contact monitor (
8
channel to GND, parallel interface)
FEATURES
Supply voltage range VDD
4
.
75
V to
5
.
25
V
Monitoring supply voltage range VS
5
.
25
V to
25
V
Maximum overvoltage protection up to
40
V
Internal clamp diodes at each input to VS and GND
Low standby current ( typical <
10
μA )
Contact status monitoring by comparison of the
resistance at the inputs with an internal reference
High noise immunity
–
40
°C to +
125
°C operating temperature
SO
20
w package
APPLICATION
Automotive electronics
Monitor for mechanical switches
Monitor for voltage levels
DESCRIPTION
The IC monitors the status of all switch contacts connected to
ground continuously .
The input currents are compared with the current of an internal
reference resistor. The IC is designed to operate with an external
series resistor RIN
0
to RIN
7
of
1
kY. The current, driven through the
contacts keeps their resistance low.
The output switches to high when the input resistance increases
to above
9
kY and switches to low when the input resistance falls
below
1.5
kY. These values are valid within the supply range
5.25
V
to
25
V.
A closed switch corresponds to a low logic level on the outputs
OUT
0-7
.
VBAT
VDD
μC
VDD
IN0
IN1
IN2
IN3
IN4
IN5
IN6
IN7
Ref.
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
VS
EN
CH0
CH7
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