LM359MX
Public Unreviewedby Ray
Texas Instruments Operational Amplifier, SOIC-14. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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README
markdownLM359MX
Texas Instruments · Operational Amplifier · SOIC-14
LM359MX from Texas Instruments, in a SOIC-14. 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 | ISET(OUT) | input | Output-stage programming pin. A resistor from this pin to ground sets the class-A output bias current per ISET(OUT) = (V+ - VBE)/(RSET(OUT) + 500 Ohm). Sets maximum output sink capability (~10x ISET(OUT)). |
| 2 | VOUT_A | output | Amplifier A output. Darlington emitter-follower output; large inverting output swing from 2 mV to (V+ - 2 V). |
| 3 | COMP_A | passive | Frequency-compensation pin for amplifier A. Connect an external capacitor (typ. 10 pF for unity-gain stability) to tailor closed-loop response. |
| 4 | GND_A | power_in | Ground return for amplifier A. |
| 5 | NC | unconnected | No internal connection. |
| 6 | IIN(+)_A | input | Non-inverting current input for amplifier A. Current-mirror input; establishes the reference current that the inverting input must match. Max input current 10 mA. |
| 7 | IIN(-)_A | input | Inverting current input for amplifier A. Input resistance ~2.5 kOhm; max input current 10 mA. |
| 8 | ISET(IN) | input | Input-stage programming pin. A resistor from V+ to this pin sets ISET(IN) = (V+ - VBE)/(RSET(IN) + 500 Ohm), which controls slew rate, gain-bandwidth product, input bias current, and dominant-pole frequency of both amplifiers. Max 2 mA. |
| 9 | IIN(+)_B | input | Non-inverting current input for amplifier B. Current-mirror input. Max input current 10 mA. |
| 10 | IIN(-)_B | input | Inverting current input for amplifier B. Input resistance ~2.5 kOhm; max input current 10 mA. |
| 11 | GND_B | power_in | Ground return for amplifier B. |
| 12 | V+ | power_in | Positive supply. Single-supply operation 5 V to 22 V (or +/-11 V). Supply current typ. 18.5 mA (max 22 mA) at ISET = 0.5 mA. |
| 13 | COMP_B | passive | Frequency-compensation pin for amplifier B. Connect an external capacitor to tailor closed-loop response. |
| 14 | VOUT_B | output | Amplifier B output. Darlington emitter-follower output; output impedance ~3.5 Ohm at 1 MHz. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Op-amp/Cmp |
| Pins | 14 |
Ordering variants
Same part, different packaging or reel option.
LM359MXMLM359MXLM359MXN
CAD (KiCad official)
- Symbol:
LM359MX - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
lm359mx.step |
195 KB | You want the bare part, or you mark your own boards. |
lm359mx-etched.step |
1.9 MB | You want the part with LM359MX already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 471 faces against 237 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (36 pp, sha256
1cc28e58db3a4160, retrieved 2026-08-17, tier: lcsc) - 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).