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LM339 Quad Comparator

LM339

Texas Instrumentsic amplifier

The LM339 contains four independent voltage comparators that operate from a single 2V to 36V supply. Its common-mode input range includes ground, and the open-collector outputs are compatible with TTL, MOS and CMOS logic.

Manufacturer datasheet
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Specifications

9
Operating Voltage
2 to 36 V
Supply Current
0.8 mA
Response Time
1.3 μs
Input Offset Voltage
9 mV
Input Bias Current
250 nA
Output Sink Current
6 mA
Channels
4
Operating Temperature Range
0 to 70 °C
Package Types
SOIC, PDIP, TSSOP, SOP, SSOP, WQFN

Pinout

14
PinNameFunctionsNotes
1OUT1
GPIO
Output of comparator 2 (some makers transpose channels 1 and 2).
2OUT2
GPIO
Output of comparator 1.
3VCC
POWER
Positive supply.
4IN2-
GPIO
Negative input of comparator 1.
5IN2+
GPIO
Positive input of comparator 1.
6IN1-
GPIO
Negative input of comparator 2.
7IN1+
GPIO
Positive input of comparator 2.
8IN3-
GPIO
Negative input of comparator 3.
9IN3+
GPIO
Positive input of comparator 3.
10IN4-
GPIO
Negative input of comparator 4.
11IN4+
GPIO
Positive input of comparator 4.
12GND
GND
Negative supply / ground.
13OUT4
GPIO
Output of comparator 4.
14OUT3
GPIO
Output of comparator 3.

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