LM567M

@@ -0,0 +1,50 @@+# LM567M++**HGSEMI** · Audio Interface ICs · SOIC-8++LM567M from HGSEMI, in a SOIC-8. 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 | OUTPUT_FILTER | passive | Output filter capacitor connection (C2). Sets the low-pass filter time constant that removes carrier feedthrough from the I-detector output; larger C2 narrows the detection bandwidth. |+| 2 | LOOP_FILTER | passive | Loop filter capacitor connection (C3). Sets the PLL loop bandwidth and hence the detection bandwidth of the tone decoder. |+| 3 | INPUT | input | Signal input to the phase detector. Input impedance ~20 kΩ; smallest detectable input voltage typically 20 mVrms (IL = 100 mA). AC-couple the incoming tone signal here. |+| 4 | V+ | power_in | Positive supply voltage. Operating range 4.75 V to 9.0 V (absolute max 9 V). Typical quiescent current 6 mA; activated current ~11 mA with RL = 20 kΩ. |+| 5 | TIMING_RESISTOR | passive | External VCO timing resistor (R1) connection. Together with C1 on pin 6 sets the free-running center frequency f0 ≈ 1/(1.1·R1·C1). Range supports f0 from 0.01 Hz to 500 kHz. |+| 6 | TIMING_CAPACITOR | passive | External VCO timing capacitor (C1) connection. With R1 on pin 5 sets the VCO free-running center frequency. |+| 7 | GND | power_in | Device ground reference. All external timing/filter components and the output load return to this pin. |+| 8 | OUTPUT | output | Open-collector logic-compatible output. Pulls to ground (saturated NPN, VOL ~0.2 V at 30 mA, 0.6 V at 100 mA) when an in-band tone is detected; requires an external pull-up (RL, e.g. 20 kΩ). Absolute max V8 = 15 V, 100 mA sink capability. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOIC-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++- `LM567MM/TR`+- `LM567MCM/TR`+- `LM567MN`+- `LM567MCN`++## CAD (KiCad official)++- Symbol: `LM567M`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [HGSEMI datasheet](docs/lm567m-datasheet.pdf) (12 pp, sha256 `47a007a297187f96`, 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).++[Datasheet PDF](docs/lm567m-datasheet.pdf)

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