
Hoatzin
mizzan-microtonal-piano/hoatzin
Hoatzin V1 Rev A from @mizzande is an encoder for the Fatar 88 keys supporting VFP3/15 3 pedal and aftertouch. The board offers connection over both standard MIDI and USB MIDI.

The SN74LS14D is an inverter made by Texas Instruments in a SOIC-14 package with 14 pins. 0℃~+70℃ 1 1.9V 2.7V~3.4V 22ns@5V,15pF 4.75V~5.25V 400uA 500mV 500mV 6 74LS 8mA Schmitt trigger 噪声抑制功能 SOIC-14 Inverters ROHS.
PCBKit's library has its KiCad symbol (74xx:74LS14, from KiCad's library) and its footprint (Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, from KiCad's library), ready for a KiCad board. 1,615 are in stock at JLCPCB (part C7739). 1 open-source board in 1 repository on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | — | Input |
| 2 | — | Output |
| 3 | — | Input |
| 4 | — | Output |
| 5 | — | Input |
| 6 | — | Output |
| 7 | GND | Power in |
| 8 | — | Output |
| 9 | — | Input |
| 10 | — | Output |
| 11 | — | Input |
| 12 | — | Output |
| 13 | — | Input |
| 14 | VCC | Power in |

mizzan-microtonal-piano/hoatzin
Hoatzin V1 Rev A from @mizzande is an encoder for the Fatar 88 keys supporting VFP3/15 3 pedal and aftertouch. The board offers connection over both standard MIDI and USB MIDI.
<iframe src="https://pcbkit.io/embed/parts/ti/SN74LS14D" title="SN74LS14D 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/SN74LS14D.jpg" alt="SN74LS14D" width="1200" height="900">[](https://pcbkit.io/parts/ti/SN74LS14D)Yes. The symbol is 74xx:74LS14 and the footprint Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
SOIC-14, with 14 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 C7739, with 1,615 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the MC14584BD by onsemi, the MC14106BD by onsemi, the CD4007UBM/TR by HGSEMI and the RS6G14XP 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.