LM339A Просмотр технического описания (PDF) - Philips Electronics
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LM339A Datasheet PDF : 10 Pages
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Philips Semiconductors
Quad voltage comparator
Product specification
LM139/239/239A/339/339A/
LM2901/MC3302
EQUIVALENT CIRCUIT
+ VC
FREQUENCY
CONTROL
VOLTAGE
INPUT
100kΩ
10
0.1µF
– 500pF
1/4LM339
+
20kΩ
50kΩ
20kΩ
+
1/4LM339
–
V+
30kΩ
5.1kΩ
0.01µF
V – /2
700kΩ
–
1/4LM339
+
V + /2
V+
3.0kΩ
OUTPUT 1
OUTPUT 2
NOTES:
V+ = 30VDC
+ 250m VDC < VC = 50VDC
700H < fO = 100kHz
Two–Decade High–Frequency VCO
+ V (12VDC)
+ VREF HI
2RS
10KΩ
+
+ VIN
–
RS
LAMP
+ 5VDC
360
+ VREF 4
100
+
–
100k
+ 5VDC
360
+
+ VREF 3 –
100k
VO
100
+ 5VDC
360
+
2RS –
2N2222
+ VREF LO
Limit Comparator
5VDC
+ VREF
(1.4VDC)
+ 1/4LM339 VO
–
10KΩ
–12VDC
TTL–to–MOS Logic Converter
o
–12V
+
+ VREF 2 –
100k
100
+ 5VDC
360
+
+ VREF 1 –
100k
100
Visible Voltage Indicator
V+
200kΩ 100kΩ
+
0.1µF
–
2.0kΩ
V+
o
VO
200kΩ CRYSTAL
1 – 100kHz
NOTE:
Input of unused comparators should be grounded.
Figure 3. Equivalent Circuit
Crystal–Controlled Oscillator
SL00072
1995 Nov 27
7
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