BETAClassic LM339 supply2–30 V
Quad differential comparator
LM339 Specifications
Review LM339 electrical specifications, operating conditions and package details.
Package view
Key specifications
Share the supply and reference, but give each used output its own suitable pull-up. The comparator is a switching device, not a linear op-amp.
Independent comparators4 Open-collector outputs
Ambient range0–70 °C
Typical response time1.3 µs · specified small-step test
Package details
LM339N · PDIP-14
| Property | Details |
|---|---|
| Manufacturer | Texas Instruments |
| Part number | LM339N |
| Package | PDIP-14 |
| Connections | 14 pins |
| Mounting | Through-hole |
| Lead pitch | 2.54 mm |
| Package code | dip |
| Thermal reference | Board and package dependent; see manufacturer data |
Operating conditions
Classic LM339 · not LM339B
Manufacturer specifications 5 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Supply | 2–30 V | Single supply |
| Ambient temperature | 0 to 70°C | LM339 grade |
| Input common-mode range | 0 to VCC − 1.5 V | At 25°C |
| Input common-mode range | 0 to VCC − 2 V | Across the full temperature range |
| Total supply current | 0.8 mA typical; 2 mA maximum | Four channels; VO = 2.5 V; no load; 25°C |
No specifications match. Try a parameter name or a unit.
B variants have different supply, offset and temperature limits.
Electrical characteristics
5 V unless stated
Manufacturer specifications 8 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Input offset | 2 mV typical; 5 mV maximum | At 25°C; specified common-mode condition |
| Input offset across temperature | 9 mV maximum | Classic LM339 |
| Input bias-current magnitude | 25 nA typical; 250 nA maximum | At 25°C |
| Input bias-current magnitude | 400 nA maximum | Across temperature |
| LOW output voltage | 150 mV typical; 400 mV maximum | 4 mA sink; −1 V differential; 25°C |
| LOW output across temperature | 700 mV maximum | 4 mA sink |
| Off-state leakage | 0.1 nA typical; 50 nA maximum | VO = 5 V; 25°C |
| Typical response time | 1.3 µs | 100 mV step; 5 mV overdrive; 5.1 kΩ pull-up; 15 pF |
No specifications match. Try a parameter name or a unit.
Small-signal timing and output voltage depend on overdrive, pull-up, load and temperature.
Comparator channel connections
Physical pin numbers
Manufacturer specifications 5 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| OUT1 pin1 | IN+7 / IN−6 | Used threshold channel |
| OUT2 pin2 | IN+5 / IN−4 | Second independent comparator |
| OUT3 pin14 | IN+9 / IN−8 | Third independent comparator |
| OUT4 pin13 | IN+11 / IN−10 | Fourth independent comparator |
| Shared supply | VCC3 / GND12 | Do not confuse this map with LM324 |
No specifications match. Try a parameter name or a unit.
Some manufacturers swap channel 1 and 2 names. The physical input/output groupings above are unchanged.
Threshold detector
5 V · 2 V reference
Manufacturer specifications 8 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Reference divider | 15 kΩ above, 10 kΩ below | 5 × 10 / (15 + 10) = 2.0 V nominal |
| Signal input | VIN → pin7 | Use 0–3 V for the reviewed full-temperature range |
| Reference input | VREF → pin6 | Same reference also biases unused negative inputs |
| Pull-up | 10 kΩ from output1 to +5 V | Required for logic HIGH |
| Supply bypass | 100 nF from3 to12 | Close to the package |
| Unused comparators | Positive inputs to GND; negative inputs to VREF | Leave their outputs open |
| Below reference | Output LOW | Transistor sinks pull-up current |
| Above reference | Output HIGH through pull-up | Transistor is off |
No specifications match. Try a parameter name or a unit.
Divider accuracy depends on resistor tolerances and input bias. The explorer uses a chosen reference value.
Package and stress limits
LM339N · PDIP-14
Manufacturer specifications 5 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Lead pitch | 2.54 mm | Through-hole; top view |
| Supply absolute maximum | 36 V | Classic non-B stress limit |
| Output absolute maximum | 36 V / 20 mA | Stress limits; design within operating conditions |
| Storage temperature | −65 to +150°C | Unpowered |
| Input/output distinction | Outputs can sink; inputs cannot power a load | Use a pull-up sized for the connected logic |
No specifications match. Try a parameter name or a unit.
Output pull-up voltage, input range and supply voltage are separate design constraints.
Connections by function
Select a pin for its function, connection guidance and electrical notes.