LMV321M5X
National Semiconductor
Needs validationmedium risk
LMV321M5X is the closest catalog match, but pinout and temperature need confirmation.
Best Alternatives to LMV321
LMV321 replacements should be checked first for SOT-23-5 pinout, supply range, bandwidth, and output behavior. No pin-compatible substitute is confirmed from the provided fields.
AI replacement insight
Electrical riskmedium
GBW, slew, Iq, and offset vary.
Package risklow
Kept parts are SOT-23-5.
Firmware risklow
Analog op amp; no firmware interface.
Sourcing riskmedium
All candidates need datasheet review.
Can it be replaced directly?
Direct replacement for LMV321 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Start with LMV321M5X, then confirm pin functions and temperature rating.
Main risk
Pinout is not provided for any candidate.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | LMV321 | LMV321M5X | RS8551XF | RS8557XF | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23-5 | SOT-23-5 | SOT-23-5 | SOT-23-5 | SOT-23-5 — same package; RS8551XF: same package; RS8557XF: same package; RS721PXF: same package |
| Pinout | 5 pins | 5 pins | 5 pins | 5 pins | 5 pins — functions not shown; RS8551XF: functions not shown; RS8557XF: functions not shown; RS721PXF: functions not shown |
| Voltage | 3-5.5V | 2.2-5.5V | 2.7-5.5V | 2.7-5.5V | 2.2-5.5V / 2.7-5.5V / 2.5-5.5V — range covers; RS8551XF: covers use range; RS8557XF: covers use range; RS721PXF: covers use range |
| Current | 430uA | 40uA | 640uA | 650uA | 40uA / 640uA / 650uA / missing — lower Iq; RS8551XF: higher Iq; RS8557XF: higher Iq; RS721PXF: Iq not given |
| Temperature | -40..85C | missing | - | - | missing — not in fields |
| Application | 1MHz, 0.4V/us | - | 4.5MHz, 2.7V/us | 4.3MHz, 2.5V/us | 4.5MHz, 2.7V/us / 4.3MHz, 2.5V/us / 10MHz, 6V/us — faster part; RS8557XF: faster part; RS721PXF: stability risk |
Application & sourcing insights
Questions & answers
Verified drop-in options for LMV321 are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.