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LM239QT

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STMicroelectronics Comparators, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM239QT

STMicroelectronics · Comparators · QFN-16-EP(3x3)

LM239QT from STMicroelectronics, in a QFN-16-EP(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VCC+ power_in Positive supply; datasheet gives 2 to 32 V single supply (absolute maximum 36 V).
2 IN-1 input Inverting input of comparator 1; common-mode range 0 to VCC+ - 1.5 V.
3 NC unconnected No internal connection.
4 IN+1 input Non-inverting input of comparator 1; common-mode range 0 to VCC+ - 1.5 V.
5 IN-2 input Inverting input of comparator 2; common-mode range 0 to VCC+ - 1.5 V.
6 IN+2 input Non-inverting input of comparator 2; common-mode range 0 to VCC+ - 1.5 V.
7 IN-3 input Inverting input of comparator 3; common-mode range 0 to VCC+ - 1.5 V.
8 IN+3 input Non-inverting input of comparator 3; common-mode range 0 to VCC+ - 1.5 V.
9 IN-4 input Inverting input of comparator 4; common-mode range 0 to VCC+ - 1.5 V.
10 NC unconnected No internal connection.
11 IN+4 input Non-inverting input of comparator 4; common-mode range 0 to VCC+ - 1.5 V.
12 VCC- power_in Negative supply or ground for single-supply operation.
13 OUT4 output Open-collector output of comparator 4; max output current about 20 mA, 250 mV typ saturation at 4 mA sink.
14 OUT3 output Open-collector output of comparator 3; max output current about 20 mA, 250 mV typ saturation at 4 mA sink.
15 OUT2 output Open-collector output of comparator 2; max output current about 20 mA, 250 mV typ saturation at 4 mA sink.
16 OUT1 output Open-collector output of comparator 1; max output current about 20 mA, 250 mV typ saturation at 4 mA sink.
17 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package QFN-16-EP(3x3)
Category Amplifiers/Comparators
Pins 17

CAD (KiCad official)

  • Symbol: LM239QT
  • Footprint: Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm
  • 3D model: QFN-16-EP(3x3) (KiCad packages3D, STEP)
  • 3D model files: lm239qt-etched.step / lm239qt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm239qt.step / lm239qt.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (19 pp, sha256 5adc47258717f516, retrieved 2026-10-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (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).

Datasheet PDF