
onsemi
LM324AN matches the DIP-14 quad op amp class but needs pinout review.
LM324N is an obsolete DIP-14 quad operational amplifier. Active LM324-N variants look promising, but pinout and catalog fields need review.
Check supply, offset, bias, and load.
DIP-14/PDIP names must map mechanically.
Analog op amp; no firmware interface.
Target and some alternates are obsolete.
No fully verified drop-in is proven from the provided fields.
Review active TI LM324N/NOPB first, then LM324AN/NOPB after catalog ingestion.
Unverified pinout and incomplete catalog fields.

onsemi
LM324AN matches the DIP-14 quad op amp class but needs pinout review.
| Feature / factor | LM324N | LM324N/NOPB | LM324AN | LM2902N | Compatibility / risk |
|---|---|---|---|---|---|
| Package | DIP-14 | PDIP/14-DIP | DIP-14 | DIP-14 | PDIP/14-DIP / DIP-14 — same package class; LM324AN: same package; LM2902N: same package |
| Pinout | LM324 DIP-14 | 14 pins claimed | not given | not given | 14 pins claimed / not given — pin map not shown; LM324AN: no pin map; LM2902N: no pin map |
| Voltage | 3V to 32V | 32V | 3V to 32V | 3V to 30V | 32V / 3V to 32V / 3V to 30V — official claim; LM324AN: same range; LM2902N: needs derating |
| Temperature | 0C to 70C | 0C to 70C | 0C to 70C | -40C to 85C | 0C to 70C / -40C to 85C — same range; LM324AN: same range; LM2902N: wider range |
| Lifecycle | Obsolete | Active | Obsolete | Obsolete | Active / Obsolete — sourcing upgrade; LM324AN: no sourcing upgrade; LM2902N: no sourcing upgrade |
LM324N/NOPB is the best active candidate here, but it still needs pinout and catalog-field review.