# HGX202EIN

**HGSEMI** · RS232 ICs · DIP-16

HGX202EIN from HGSEMI, in a DIP-16. 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 | C1+ | passive | Positive terminal of charge-pump capacitor C1 (0.1 µF, 6.3 V). Used by the internal voltage doubler that generates V+ from VCC. |
| 2 | V+ | power_out | Positive charge-pump output (~+10 V typical, max 14 V). Requires a reservoir capacitor (0.1 µF, 16 V) to GND. Supplies the positive RS-232 driver rail. |
| 3 | C1- | passive | Negative terminal of charge-pump capacitor C1 (0.1 µF, 6.3 V) used by the internal voltage doubler. |
| 4 | C2+ | passive | Positive terminal of charge-pump capacitor C2 (0.1 µF, 16 V). Used by the internal voltage inverter that generates V- from V+. |
| 5 | C2- | passive | Negative terminal of charge-pump capacitor C2 (0.1 µF, 16 V) used by the internal voltage inverter. |
| 6 | V- | power_out | Negative charge-pump output (~-10 V typical, min -14 V). Requires a reservoir capacitor (0.1 µF, 16 V) to GND. Supplies the negative RS-232 driver rail. |
| 7 | DOUT2 | output | RS-232 line driver 2 output. Swings between V- and V+ (typ ±9 V, min ±5 V into 3-kΩ load). ±15-kV HBM ESD protected. Output resistance 300 Ω. Short-circuit output current ±10 mA typ, ±60 mA max. |
| 8 | RIN2 | input | RS-232 line receiver 2 input. Accepts ±30 V input range with 3-7 kΩ input resistance (5 kΩ typ). Positive threshold 1.7-2.4 V, negative threshold 0.8-1.2 V, hysteresis 0.5 V typ. ±15-kV HBM ESD protected. |
| 9 | ROUT2 | output | Receiver 2 TTL/CMOS-level output. VOH ≥ 3.5 V at IOH = -1 mA, VOL ≤ 0.4 V at IOL = 1.6 mA. Inverted with respect to RIN2; goes high when RIN2 is low or open. |
| 10 | DIN2 | input | Driver 2 TTL/CMOS-level input. VIH ≥ 2 V, VIL ≤ 0.8 V. Inverted with respect to DOUT2. Input range 0 to 5.5 V. |
| 11 | DIN1 | input | Driver 1 TTL/CMOS-level input. VIH ≥ 2 V, VIL ≤ 0.8 V. Inverted with respect to DOUT1. Input range 0 to 5.5 V. |
| 12 | ROUT1 | output | Receiver 1 TTL/CMOS-level output. VOH ≥ 3.5 V at IOH = -1 mA, VOL ≤ 0.4 V at IOL = 1.6 mA. Inverted with respect to RIN1; goes high when RIN1 is low or open. |
| 13 | RIN1 | input | RS-232 line receiver 1 input. Accepts ±30 V input range with 3-7 kΩ input resistance (5 kΩ typ). Positive threshold 1.7-2.4 V, negative threshold 0.8-1.2 V, hysteresis 0.5 V typ. ±15-kV HBM ESD protected. |
| 14 | DOUT1 | output | RS-232 line driver 1 output. Swings between V- and V+ (typ ±9 V, min ±5 V into 3-kΩ load). ±15-kV HBM ESD protected. Output resistance 300 Ω. Short-circuit output current ±10 mA typ, ±60 mA max. |
| 15 | GND | power_in | Ground reference (0 V). All voltages are referenced to this pin. |
| 16 | VCC | power_in | Supply voltage input. Recommended 4.5 V to 5.5 V (5 V nominal). Bypass to GND with at least 0.1 µF. Typical supply current 8 mA (15 mA max, no load). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | DIP-16 |
| Category | Interface |
| Pins | 16 |

## Ordering variants

Same part, different packaging or reel option.

- `HGX202EIN`
- `HGX202ECN`
- `HGX202EIM/TR`
- `HGX202ECM/TR`
- `HGX202EIMT/TR`
- `HGX202ECMT/TR`

## CAD (KiCad official)

- Symbol: `HGX202EIN`
- Footprint: `Package_DIP:DIP-16_W7.62mm`
- 3D model: DIP-16 (KiCad packages3D, STEP)
- 3D model files: `hgx202ein-etched.step` / `hgx202ein-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hgx202ein.step` / `hgx202ein.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603074276182810624) (None pp, sha256 `d2d6074b63f18c7a`, 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/hgx202ein-datasheet.pdf)