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LM903 bảng dữ liệu(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện LM903
Giải thích chi tiết về linh kiện  Fluid Level Detector
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LM903 bảng dữ liệu(HTML) 2 Page - National Semiconductor (TI)

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Absolute Maximum Ratings
If MilitaryAerospace specified devices are required
please contact the National Semiconductor Sales
OfficeDistributors for availability and specifications
Supply Voltage VCC
18V
Control Input Voltage (Pin 7)
18V
Transient Voltage (Pins 6 7 9) 10 ms (Note 1)
70V
Output Current (Pin 4) I4 (Sink)
10 mA
Operating Temperature Range
b
40 Cto a85 C
Storage Temperature
b
55 Cto a150 C
Maximum Junction Temperature
a
150 C
Lead Temperature (Soldering 10 sec)
260 C
Electrical Characteristics
VCC e 12V CT e 33 mF RT e 75 kX TA within operating range except where stated otherwise
Tested Limits
Design Limits
Symbol
Parameter
Conditions
(Note 2)
(Note 3)
Units
Min
Max
Min
Typ
Max
VCC
Supply Voltage
70
18
70
13
18
V
IS
Supply Current
50
50
mA
VREG
Regulated Voltage
55
62
53
58
63
V
Regulation
VCC e 72V–18V
105
mV
Temperature Drift
500
m
V C
V6–V3
Probe Current
20
235
195
220
240
V
Reference Voltage
VREF
Measurement Reference Voltage
790
900
780
850
910
mV
RREF
Reference Input Resistor
12
kX
V7
Start Input Logic High Level
16
V
V7
Start Input Logic Low Level
10
V
I7
High Input Current
Latch Off
100
nA
I7
Latch Holding Current
Latch On
25
nA
R7
Resistance Pin 7
Latch On
22
kX
I12
Ramp Current
See Timing Diagram
Charging
V12 e 0V–1V
600
1100
590
1100
m
A
V12 e 1V–4V
53
93
50
96
m
A
Discharging
V12 e 41V
b
700
b
450
b
710
b
440
m
A
V12 e 05V
b
650
b
400
b
660
b
390
m
A
V12
Ramp Threshold
See Timing Diagram
Probe Current Start
570
850
550
710
870
mV
First Measurement
910
1200
890
1055
1220
mV
Second Measurement
910
1240
890
1080
1270
mV
V1
Probe Input Voltage Range
VCC e 75V–18V
1
VREGb10
V
V5
Probe Open-Circuit Threshold
At Pin 5
VREGb085 VREGb06
V
V5
Probe Short-Circuit Threshold
06
085
V
I1
Pin 1 Input Leakage Current
Pin 1 e 300 mV
b
35
a
35
a
50
nA
I15
Pin 15 Leakage Current
V15 e 2V V7 e 12V
b
35
35
m
A
Pin 15 Charging Current
V15 e 4V V7 e 12V
60
m
A
f9
Lamp Oscillation Frequency
CL e 33 mF
05
15
25
Hz
I9
Lamp Driver Current
Flashing Mode
600
mA
V9
Lamp Driver Saturation
I9 e 200 mA
200
250
mA
2



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