| LF347 | Fairchild Semiconductor | Quad Operational Amplifier (JFET) |
| LF347M | Fairchild Semiconductor | Quad Operational Amplifier (JFET) |
| LF347MX | Fairchild Semiconductor | Quad Operational Amplifier (JFET) |
| LF347N | Fairchild Semiconductor | Quad Operational Amplifier (JFET) |