HT9032D

@@ -0,0 +1,50 @@+# HT9032D++**lingxingic** · Telecom Interface ICs · SOP-8++HT9032D from lingxingic, in a SOP-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 | DOUT | output | FSK demodulator data output. During normal operation outputs the recovered CID data stream (alternating '0'/'1' marker sequence followed by data); otherwise held high ('1'). |+| 2 | VDD | power_in | Internal logic supply. Operating range 3.5 V to 5.5 V (typ 5.0 V). Typical IDD ≈ 3.2 mA active, standby current ≈ 1 µA. |+| 3 | TIP | input | Telephone-line TIP input to the FSK front-end. Internally biased to 1/2 VDD during normal operation; must be DC-isolated (AC coupled) from the telephone line. Differential input impedance ≈ 500 kΩ (TIP,RING). |+| 4 | RING | input | Telephone-line RING input to the FSK front-end. Internally biased to 1/2 VDD during normal operation; must be DC-isolated (AC coupled) from the telephone line. |+| 5 | PDWN | input | Power-down control, Schmitt-trigger input. PDWN = '1' places the circuit in power-saving mode; PDWN = '0' selects normal operation. VIH ≥ 0.8 V, VIL ≤ 0.2·VDD; threshold VT- 2.0-2.6 V, VT+ 2.5-3.0 V at VDD = 5 V. |+| 6 | VSS | power_in | Internal logic ground (0 V reference). |+| 7 | X2 | output | Clock generator oscillator output; the second terminal of the crystal/ceramic resonator. Typical resonator is 3.58 MHz with 10 MΩ feedback and 30 pF load caps. |+| 8 | X1 | input | Clock generator oscillator input; one terminal of the crystal/ceramic resonator, or an external 3.58 MHz clock source injection point. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | lingxingic |+| Package | SOP-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `HT9032D (LX)`++## CAD (KiCad official)++- Symbol: `HT9032D`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [lingxingic datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603322867585204224) (13 pp, sha256 `a82177d350f5df81`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/ht9032d-datasheet.pdf)

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