# TS391AG-AF5-R

**UTC Unisonic Tech** · Comparators · SOT-25-5

TS391AG-AF5-R from UTC Unisonic Tech, in a SOT-25-5. 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 | IN(+) | input | Non-inverting comparator input. Input common-mode range includes ground and extends up to VCC-1.5V; may go to +30V without damage. Input bias current is typ. 25 nA (out of the pin due to PNP input stage). |
| 2 | GND | power_in | Device ground / negative supply reference. In single-supply operation, tie to 0V; in dual-supply operation, tie to the negative rail (down to -18V). |
| 3 | IN(-) | input | Inverting comparator input. Same common-mode constraints as IN(+); differential input voltage range equals the supply voltage (up to ±36V). |
| 4 | Output | output | Open-collector comparator output. Requires an external pull-up resistor to VCC (or another logic rail up to +36V). Low-level output voltage is typ. 250 mV at IOUT=4 mA; sink capability is typ. 16 mA. Compatible with TTL, DTL, ECL and CMOS. |
| 5 | VCC | power_in | Positive supply pin. Single-supply range +2V to +36V, or ±1V to ±18V split supply. Supply current is typ. 0.2 mA at VCC=5V and independent of supply voltage. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UTC Unisonic Tech |
| Package | SOT-25-5 |
| Category | Op-amp/Cmp |
| Pins | 5 |

## Ordering variants

Same part, different packaging or reel option.

- `TS391AG-AF5-R`
- `TS391AG-AL5-R`

## CAD (KiCad official)

- Symbol: `TS391AG-AF5-R`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-25-5 (KiCad packages3D, STEP)
- 3D model files: `ts391ag-af5-r-etched.step` / `ts391ag-af5-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ts391ag-af5-r.step` / `ts391ag-af5-r.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UTC Unisonic Tech datasheet](docs/ts391ag-af5-r-datasheet.pdf) (6 pp, sha256 `148a7cf2cdeb20cf`, 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](docs/ts391ag-af5-r-datasheet.pdf)