
386RC-16
raszpl/386RC-16
Modular Circuit Technology 386RC-16 ram expansion board for C386-33 reproduction

The 74F240PC is a buffers, Drivers, Receivers, Transceiver made by onsemi in a PDIP-20 package with 20 pins. 0℃~+70℃ 2 3mA 4 4.5V~5.5V 64mA 74F Output enable Tri-State PDIP-20 Buffers, Drivers, Receivers, Transceivers ROHS.
PCBKit's library has its KiCad symbol (74xx:74HC240, from KiCad's library) and its footprint (Package_DIP:DIP-20_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3753771). 3 open-source boards in 3 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | 1OE | Input |
| 2 | 1A0 | Input |
| 3 | 2Y0 | Tri-state |
| 4 | 1A1 | Input |
| 5 | 2Y1 | Tri-state |
| 6 | 1A2 | Input |
| 7 | 2Y2 | Tri-state |
| 8 | 1A3 | Input |
| 9 | 2Y3 | Tri-state |
| 10 | GND | Power in |
| 11 | 2A3 | Input |
| 12 | 1Y3 | Tri-state |
| 13 | 2A2 | Input |
| 14 | 1Y2 | Tri-state |
| 15 | 2A1 | Input |
| 16 | 1Y1 | Tri-state |
| 17 | 2A0 | Input |
| 18 | 1Y0 | Tri-state |
| 19 | 2OE | Input |
| 20 | VCC | Power in |

raszpl/386RC-16
Modular Circuit Technology 386RC-16 ram expansion board for C386-33 reproduction


<iframe src="https://pcbkit.io/embed/parts/onsemi/74F240PC" title="74F240PC in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/onsemi/74F240PC.jpg" alt="74F240PC" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/74F240PC)Yes. The symbol is 74xx:74HC240 and the footprint Package_DIP:DIP-20_W8.89mm_SMDSocket_LongPads, both drawn on this page. PCBKit places them on a board for you when you design with it.
PDIP-20, with 20 pins. Its footprint is drawn on this page.
onsemi publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C3753771, with 0 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the SN74HC244N(LX) by lingxingic, the AIP74HC540DA20.TB by Wuxi I-core Elec, the AIP74HC541DA20.TB by Wuxi I-core Elec and the 74HC244N-HX by ZHHXDZ. Check their datasheets: a part that fits the footprint may still differ in its ratings.
3 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.