# GS8554-SR

**Gainsil** · Precision OpAmps · SOP-14

GS8554-SR from Gainsil, in a SOP-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 | OUTA | output | Amplifier A output. Rail-to-rail CMOS output stage capable of ~65 mA typical output current; short-circuit limit 60 mA. |
| 2 | INA- | input | Amplifier A inverting input. Analog input range Vss-0.5 V to VDD+0.5 V (abs max); rail-to-rail input; input bias current ~20 pA typ. |
| 3 | INA+ | input | Amplifier A non-inverting input. Rail-to-rail input; input bias current ~20 pA typ. |
| 4 | VDD | power_in | Positive supply rail. Single-supply operating range +1.8 V to +5.5 V (abs max -0.5 V to +7.5 V with respect to VSS). Bypass locally with a low-ESR ceramic capacitor. |
| 5 | INB+ | input | Amplifier B non-inverting input. Rail-to-rail input; input bias current ~20 pA typ. |
| 6 | INB- | input | Amplifier B inverting input. Rail-to-rail input; input bias current ~20 pA typ. |
| 7 | OUTB | output | Amplifier B output. Rail-to-rail CMOS output stage; typ output current 65 mA; short-circuit limit 60 mA. |
| 8 | OUTC | output | Amplifier C output. Rail-to-rail CMOS output stage; typ output current 65 mA; short-circuit limit 60 mA. |
| 9 | INC- | input | Amplifier C inverting input. Rail-to-rail input; input bias current ~20 pA typ. |
| 10 | INC+ | input | Amplifier C non-inverting input. Rail-to-rail input; input bias current ~20 pA typ. |
| 11 | VSS | power_in | Negative supply / ground. Tied to system ground in single-supply operation, or to the negative rail in split-supply operation. Abs max VDD-VSS = 7.5 V. |
| 12 | IND+ | input | Amplifier D non-inverting input. Rail-to-rail input; input bias current ~20 pA typ. |
| 13 | IND- | input | Amplifier D inverting input. Rail-to-rail input; input bias current ~20 pA typ. |
| 14 | OUTD | output | Amplifier D output. Rail-to-rail CMOS output stage; typ output current 65 mA; short-circuit limit 60 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Gainsil |
| Package | SOP-14 |
| Category | Op-amp/Cmp |
| Pins | 14 |

## Ordering variants

Same part, different packaging or reel option.

- `GS8554-SR`
- `GS8554-SRTR`
- `GS8554-TR`

## CAD (KiCad official)

- Symbol: `GS8554-SR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOP-14 (KiCad packages3D, STEP)
- 3D model files: `gs8554-sr-etched.step` / `gs8554-sr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gs8554-sr.step` / `gs8554-sr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Gainsil datasheet](docs/gs8554-sr-datasheet.pdf) (14 pp, sha256 `dc9b0f2b6cedff03`, retrieved 2026-08-17, tier: lcsc)
- **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/gs8554-sr-datasheet.pdf)