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TL391 — graded alternatives

ti-onsemi-generic

1 verified match, sorted by compatibility grade and evidence strength. Differences are listed before any compatibility claim. Data source: live tenant catalog. Data verified: 2026-07-13T00:00:00.000Z

The closest documented alternative to TL391 is 3PEAK TL391, graded P2P (pin- and software-compatible candidate, high confidence). No differences are recorded in the cited evidence; review both datasheets for application conditions. Every match is an engineering-review candidate, not an unqualified drop-in claim.

Grading methodology: how grades and evidence classes work.

1 GRADED MATCHSORTED BY GRADE · EVIDENCE STRENGTH
P2PCONF · HIGH
TL391★ BEST MATCH
3PEAK · 3PEAK TL391 Amplifiers And Special Function Circuits component with source-traceable manufacturer data.
Catalog evidence
Sourcing unconfirmed
Detail
NOT IDENTICAL
Differences not itemized yet — verify against both datasheets before committing a design.
EVIDENCE
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Engineering questions about this cross-reference

What are the differences between TL391 and TL391?

No differences are recorded in the cited evidence for this pair. That is not a guarantee of identity — review both datasheets for electrical, timing and application conditions.

Is TL391 a drop-in replacement for TL391?

TL391 is a P2P-graded engineering-review candidate (pin- and software-compatible candidate). Cited evidence must be reviewed against your application conditions. Production use requires validation on your board.

What is the difference between P2P, PIN and FUNC grades?

P2P is a documented drop-in candidate, PIN keeps the package and pinout but needs firmware work, and FUNC is functionally similar but may require a board or BOM change.