component
LM4864MX
Public Made by Adomby adom
Texas Instruments Audio Amplifiers, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM4864MX
Texas Instruments · Audio Amplifiers · SOIC-8
LM4864MX from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SHUTDOWN | input | Shutdown control that turns off the amplifier bias circuitry when a logic high is applied (trigger point typically half supply), best tied to VDD or GND and not left floating. |
| 2 | BYPASS | passive | Half-supply (VDD/2) bypass node that connects to external capacitor CB, with 1.0 µF recommended for good click and pop performance and PSRR. |
| 3 | +IN | input | Non-inverting input of the first amplifier. |
| 4 | -IN | input | Inverting input of the first amplifier, where gain is set by Ri and RF with AVD = 2*(RF/Ri). |
| 5 | Vo1 | output | Output of the first amplifier, one side of the bridged load. |
| 6 | VDD | power_in | Positive supply, operating range 2.7V to 5.5V (6.0V absolute max), with a 0.1 µF bypass capacitor. |
| 7 | GND | power_in | Ground. |
| 8 | Vo2 | output | Output of the second amplifier (fixed unity-gain inverting), the other side of the bridged load, 180° out of phase with Vo1. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM4864MX - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm4864mx-etched.step/lm4864mx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4864mx.step/lm4864mx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (29 pp, sha256
8e340227e33ea6b4, retrieved 2026-10-11, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).