MC34074DR2G from onsemi, in a SOIC-14. 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	OUT1	output	Amplifier 1 output. All-NPN output stage with no deadband crossover; sources up to 30 mA typ / sinks 30 mA typ into a short.
2	IN1-	input	Amplifier 1 inverting input. High-impedance Darlington input (~150 MOhm differential). Input voltage must not exceed VCC or VEE.
3	IN1+	input	Amplifier 1 non-inverting input. Common-mode range extends from VEE up to (VCC - 1.8 V).
4	VCC	power_in	Positive supply. 3.0 V to 44 V single-supply, or up to +22 V with split supplies (VCC +
5	IN2+	input	Amplifier 2 non-inverting input. Common-mode range extends from VEE up to (VCC - 1.8 V).
6	IN2-	input	Amplifier 2 inverting input. High-impedance Darlington input; do not exceed VCC or VEE.
7	OUT2	output	Amplifier 2 output. All-NPN output stage with indefinite short-circuit protection.
8	OUT3	output	Amplifier 3 output. All-NPN output stage with indefinite short-circuit protection.
9	IN3-	input	Amplifier 3 inverting input. High-impedance Darlington input; do not exceed VCC or VEE.
10	IN3+	input	Amplifier 3 non-inverting input. Common-mode range extends from VEE up to (VCC - 1.8 V).
11	VEE	power_in	Negative supply / ground return. Tie to GND for single-supply operation, or to a negative rail for split supplies. Total supply span VCC-VEE <= 44 V.
12	IN4+	input	Amplifier 4 non-inverting input. Common-mode range extends from VEE up to (VCC - 1.8 V).
13	IN4-	input	Amplifier 4 inverting input. High-impedance Darlington input; do not exceed VCC or VEE.
14	OUT4	output	Amplifier 4 output. All-NPN output stage with indefinite short-circuit protection.

Key specifications

Parameter	Value
Manufacturer	onsemi
Package	SOIC-14
Category	Op-amp/Cmp
Pins	14

Ordering variants

Same part, different packaging or reel option.

MC34074DR2G
MC34074DR2GDG
MC34074DR2GPG
MC34074DR2GDTBR2G

CAD (KiCad official)

Symbol: MC34074DR2G
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOIC-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`mc34074dr2g.step`	195 KB	You want the bare part, or you mark your own boards.
`mc34074dr2g-etched.step`	2.6 MB	You want the part with `MC34074DR2G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 648 faces against 237 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: onsemi datasheet (30 pp, sha256 db258984783ea545, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF