RH7901A

@@ -0,0 +1,48 @@+# RH7901A++**RONGHE Microelectronics** · USB Converters · SOT-23-5L++RH7901A from RONGHE Microelectronics, in a SOT-23-5L. 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 | NC | unconnected | No internal connection. On the base RH7901 variant this pin is the CB configuration input, but on RH7901A the Divider3 protocol is fixed internally so the pin is left unconnected. |+| 2 | GND | power_in | Negative supply / ground reference (0 V). |+| 3 | VDD | power_in | Positive supply pin. Operating range 4.5 V to 5.5 V (typ 5.0 V), typical operating current 140 uA, LVR threshold 4.0 V. |+| 4 | DP | bidirectional | Connects to the USB port's D+ or D- line (see application circuit). In fixed Divider3 (12W) mode the DP/DM to D+/D- connection order is unrestricted. Drives 2.7 V nominal for Divider3 handshake. ESD >8 kV HBM. |+| 5 | DM | bidirectional | Connects to the USB port's D- or D+ line (see application circuit). In fixed Divider3 (12W) mode the DP/DM to D+/D- connection order is unrestricted. Drives 2.0 V nominal for the paired handshake voltage. ESD >8 kV HBM. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | RONGHE Microelectronics |+| Package | SOT-23-5L |+| Category | Interface |+| Pins | 5 |++## Ordering variants++- `RH7901A`+- `RH7901ARH7902`+- `RH7901ARH7902A`+- `RH7901ARH7902B`++## CAD (KiCad official)++- Symbol: `RH7901A`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5L (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [RONGHE Microelectronics datasheet](docs/rh7901a-datasheet.pdf) (9 pp, sha256 `3b28b7a4e97633ee`, 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/rh7901a-datasheet.pdf)

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