
Fw16 oculink8i
Terrails/FW16-OCuLink
The schematic in itself is pretty simple. You only need to connect the TX and RX PCIe lanes to the correct pins of the OCuLink connector.

The TL331LVDBV is a comparator made by Texas Instruments in a SOT-23-5 package with 5 pins. -40℃~+125℃ 1 1.5uV/℃ 1.65V~5.5V 1pA 25uA 400uV 5pA 600ns 65dB 6V ESD protection Open-drain Rail-to-rail input SOT-23-5 Comparators ROHS.
PCBKit's library has its KiCad symbol (Comparator:TL331, from KiCad's library) and its footprint (Package_TO_SOT_SMD:SOT-23-5, from KiCad's library), ready for a KiCad board. 145 are in stock at JLCPCB (part C22368501). 1 open-source board in 1 repository on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | - | Input |
| 2 | V- | Power in |
| 3 | + | Input |
| 4 | — | Open collector |
| 5 | V+ | Power in |

Terrails/FW16-OCuLink
The schematic in itself is pretty simple. You only need to connect the TX and RX PCIe lanes to the correct pins of the OCuLink connector.
<iframe src="https://pcbkit.io/embed/parts/ti/TL331LVDBV" title="TL331LVDBV in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/ti/TL331LVDBV.jpg" alt="TL331LVDBV" width="1200" height="900">[](https://pcbkit.io/parts/ti/TL331LVDBV)Yes. The symbol is Comparator:TL331 and the footprint Package_TO_SOT_SMD:SOT-23-5, both drawn on this page. PCBKit places them on a board for you when you design with it.
SOT-23-5, with 5 pins. Its footprint is drawn on this page.
Texas Instruments publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C22368501, with 145 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the LMV331IDBV by Texas Instruments, the TLV7031DBV by Texas Instruments, the LMV331TP-TR by 3PEAK and the RS8901XF by Jiangsu RUNIC Tech. Check their datasheets: a part that fits the footprint may still differ in its ratings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.