This is based on my experience; it may not always be correct.
| Original Part(s) | Replacement(s) / Equivalent(s) |
| TTL Chips | |
| 8212 | 74153 |
| 9300 | 74195 |
| 9311 | 74154 |
| 9312 | 74151 (same function, needs pinout adapter) |
| 9316 | 74161 |
| 9322 | 74157 |
| PROMs / ROMs / RAMs | |
| Intersil 5610 (I5610) | 82S123 |
| Intersil 5523 (I5523) | 82S16 |
| Operational Amplifiers | |
| ua741 | NTE941M |
| Transistors | |
| 2n3643 | 2n2222a, 2n3904, NTE123 |
| 2n3644 | 2n3906 |
| Original Part(s) | Replacement(s) / Equivalent(s) |
| Attenuators | |
| MFC6040 | MFC3340 (same function, needs pinout adapter) |
| Original Part(s) | Replacement(s) / Equivalent(s) |
| Operational Amplifiers | |
| LM311V, LM311N | LM311P |
| Original Part(s) | Replacement(s) / Equivalent(s) |
| TTL Chips | |
| SN74116 | MC14508BCP or (MC4508) I really should've looked closer at the datasheet... |
This page was published 8/30/2020
This page was last edited 3/30/2021
I left off a letter in a part number -- I fixed that.