component
LM339QT
Public Made by Adomby adom
STMicroelectronics Comparators, TQFN-16-EP(3x3). Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM339QT
STMicroelectronics · Comparators · TQFN-16-EP(3x3)
LM339QT from STMicroelectronics, in a TQFN-16-EP(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VCC+ | power_in | Positive supply voltage pin; operating range +2 V to +32 V single supply (or ±1 V to ±16 V split supply), absolute maximum ±18 or 36 V. |
| 2 | IN-1 | input | Inverting input of comparator 1; input common-mode voltage range 0 V to VCC+ -1.5 V, differential input voltage may equal the supply voltage. |
| 3 | NC | unconnected | Not internally connected pin on the QFN16 package. |
| 4 | IN+1 | input | Non-inverting input of comparator 1; input common-mode voltage range 0 V to VCC+ -1.5 V, differential input voltage may equal the supply voltage. |
| 5 | IN-2 | input | Inverting input of comparator 2; input common-mode voltage range 0 V to VCC+ -1.5 V, differential input voltage may equal the supply voltage. |
| 6 | IN+2 | input | Non-inverting input of comparator 2; input common-mode voltage range 0 V to VCC+ -1.5 V, differential input voltage may equal the supply voltage. |
| 7 | IN-3 | input | Inverting input of comparator 3; input common-mode voltage range 0 V to VCC+ -1.5 V, differential input voltage may equal the supply voltage. |
| 8 | IN+3 | input | Non-inverting input of comparator 3; input common-mode voltage range 0 V to VCC+ -1.5 V, differential input voltage may equal the supply voltage. |
| 9 | IN-4 | input | Inverting input of comparator 4; input common-mode voltage range 0 V to VCC+ -1.5 V, differential input voltage may equal the supply voltage. |
| 10 | NC | unconnected | Not internally connected pin on the QFN16 package. |
| 11 | IN+4 | input | Non-inverting input of comparator 4; input common-mode voltage range 0 V to VCC+ -1.5 V, differential input voltage may equal the supply voltage. |
| 12 | VCC- | power_in | Negative supply pin (ground in single-supply operation); with split supplies rated ±1 V to ±16 V. |
| 13 | OUT4 | output | Open-collector output of comparator 4; low-level output voltage 250 mV typ at ISINK = 4 mA, sink current up to 16 mA typ, high-level leakage 0.1 nA typ (up to 1 µA max) at Vo = 30 V. |
| 14 | OUT3 | output | Open-collector output of comparator 3; low-level output voltage 250 mV typ at ISINK = 4 mA, sink current up to 16 mA typ, high-level leakage 0.1 nA typ (up to 1 µA max) at Vo = 30 V. |
| 15 | OUT2 | output | Open-collector output of comparator 2; low-level output voltage 250 mV typ at ISINK = 4 mA, sink current up to 16 mA typ, high-level leakage 0.1 nA typ (up to 1 µA max) at Vo = 30 V. |
| 16 | OUT1 | output | Open-collector output of comparator 1; low-level output voltage 250 mV typ at ISINK = 4 mA, sink current up to 16 mA typ, high-level leakage 0.1 nA typ (up to 1 µA max) at Vo = 30 V. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TQFN-16-EP(3x3) |
| Category | Amplifiers/Comparators |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
LM339QT - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: TQFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
lm339qt-etched.step/lm339qt-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm339qt.step/lm339qt.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (19 pp, sha256
5adc47258717f516, retrieved 2026-09-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-sonnet-5(text+vision), consensusclaude-opus-4-8(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).