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LM321LVIDCKR

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by Ray

Texas Instruments Operational Amplifier, SC-70-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentop-amp-cmplm321lvidckr
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Contents

README

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LM321LVIDCKR

Texas Instruments · Operational Amplifier · SC-70-5

LM321LVIDCKR from Texas Instruments, in a SC-70-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 IN+ input Noninverting input of the op amp. Common-mode input range includes ground (V-) and extends to within ~1 V of V+.
2 V- power_in Negative (low) supply rail or ground for single-supply operation. Total supply span V+ to V- must be between 2.7 V and 5.5 V.
3 IN- input Inverting input of the op amp. Together with IN+ and the external feedback network sets the closed-loop gain and response.
4 OUT output Op-amp output. Rail-to-rail-ish output typical of LM321-class parts; drives external feedback network and load.
5 V+ power_in Positive (high) supply rail. Operating supply voltage 2.7 V to 5.5 V referenced to V-.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SC-70-5
Category Op-amp/Cmp
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • LM321LVIDCKR
  • LM321LVIDCKT
  • LM321LVIDCKRIDBVR
  • LM321LVIDCKRIDBVT
  • LM321LVIDCKRD
  • LM321LVIDCKRDGK
  • LM321LVIDCKRPW
  • LM321LVIDCKRDDF

CAD (KiCad official)

  • Symbol: LM321LVIDCKR
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SC-70-5 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (46 pp, sha256 dfb389bf4341032c, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF