LM2904M

@@ -0,0 +1,52 @@+# LM2904M++**HGSEMI** · Operational Amplifier · SOP-8++LM2904M from HGSEMI, in a SOP-8. 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 | 1OUT | output | Op-amp 1 output. Push-pull output with short-circuit protection; typical short-circuit current ±24 mA. Output swing on a 15 V single supply: VOH ~13.6 V (Iout=-50µA), VOL ~0.1 V (Iout=50µA). |+| 2 | 1IN- | input | Op-amp 1 inverting input. Common-mode input range VEE to VCC-1.5V; typical input bias current 50 nA and offset current 10 nA at VO=1.4 V. |+| 3 | 1IN+ | input | Op-amp 1 non-inverting input. Common-mode input range VEE to VCC-1.5V; ±36 V max differential input voltage between IN+ and IN-. |+| 4 | VEE | power_in | Negative supply / ground. Tie to GND for single-supply operation (3V-36V VCC) or to a negative rail for split-supply operation up to ±18 V. |+| 5 | 2IN+ | input | Op-amp 2 non-inverting input. Same electrical characteristics as 1IN+: common-mode range VEE to VCC-1.5V, ±36 V differential limit. |+| 6 | 2IN- | input | Op-amp 2 inverting input. Typical input bias current 50 nA, offset current 10 nA at VO=1.4 V. |+| 7 | 2OUT | output | Op-amp 2 output. Push-pull output with short-circuit protection; typical short-circuit current ±24 mA. Same output swing characteristics as 1OUT. |+| 8 | VCC | power_in | Positive supply. Single-supply range 3V-36V (VEE=GND) or ±18 V split supply. Typical quiescent current 0.5 mA @ VCC=5V, 0.8 mA @ VCC=36V (no load). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOP-8 |+| Category | Op-amp/Cmp |+| Pins | 8 |++## Ordering variants++- `LM2904MM/TR`+- `LM2904MN`+- `LM2904MMM/TR`+- `LM2904MDQ2/TR`+- `LM2904MDQ3/TR`++## CAD (KiCad official)++- Symbol: `LM2904M`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [HGSEMI datasheet](docs/lm2904m-datasheet.pdf) (10 pp, sha256 `25a7f8f07393d110`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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](docs/lm2904m-datasheet.pdf)

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