BL13232ETS

@@ -0,0 +1,56 @@+# BL13232ETS++**BL Shanghai Belling** · RS232 ICs · TSSOP-16++BL13232ETS from BL Shanghai Belling, in a TSSOP-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 lead of the charge-pump flying capacitor C1. Connect the positive terminal of C1 (typ. 0.1 µF at 3.3V, 0.047 µF at 5V) between C1+ and C1-. |+| 2 | V+ | power_out | Positive charge-pump output, approximately +2×VCC. Connect a storage capacitor C3 (typ. 0.1 µF at 3.3V, 0.33 µF at 5V) from V+ to GND. Storage capacitor use only. |+| 3 | C1- | passive | Negative lead of the charge-pump flying capacitor C1. Pairs with C1+ (pin 1) for the positive charge-pump stage. |+| 4 | C2+ | passive | Positive lead of the charge-pump flying capacitor C2. Pairs with C2- (pin 5) for the negative charge-pump / inverter stage. |+| 5 | C2- | passive | Negative lead of the charge-pump flying capacitor C2. Pairs with C2+ (pin 4). |+| 6 | V- | power_out | Negative charge-pump output, approximately -2×VCC. Connect a storage capacitor C4 (typ. 0.1 µF at 3.3V, 0.33 µF at 5V) from V- to GND. Storage capacitor use only. |+| 7 | DOUT2 | output | RS-232 driver #2 output. Drives the RS-232 line typically ±5.4V (VOH ≥ +5V, VOL ≤ -5V into 3 kΩ). Inverting with respect to DIN2. |+| 8 | RIN2 | input | RS-232 receiver #2 input. Accepts ±25V input, internal 5 kΩ (3-7 kΩ) input termination to GND. Positive threshold typ. 1.5-2.0 V, hysteresis typ. 0.4 V. |+| 9 | ROUT2 | output | TTL/CMOS receiver #2 output. Logic-level output (VOH ≥ VCC-0.6 V at -1 mA, VOL ≤ 0.4 V at 1.6 mA). Inverting with respect to RIN2. |+| 10 | DIN2 | input | TTL/CMOS driver #2 input. VIH ≥ 2.0 V (3.3 V supply) or 2.4 V (5 V supply); VIL ≤ 0.8 V. Accepts 5V logic when operating from 3.3V supply. |+| 11 | DIN1 | input | TTL/CMOS driver #1 input. VIH ≥ 2.0 V (3.3 V supply) or 2.4 V (5 V supply); VIL ≤ 0.8 V. Accepts 5V logic when operating from 3.3V supply. |+| 12 | ROUT1 | output | TTL/CMOS receiver #1 output. Logic-level output (VOH ≥ VCC-0.6 V at -1 mA, VOL ≤ 0.4 V at 1.6 mA). Inverting with respect to RIN1. |+| 13 | RIN1 | input | RS-232 receiver #1 input. Accepts ±25V input, internal 5 kΩ (3-7 kΩ) input termination to GND. Positive threshold typ. 1.5-2.0 V, hysteresis typ. 0.4 V. |+| 14 | DOUT1 | output | RS-232 driver #1 output. Drives the RS-232 line typically ±5.4V (VOH ≥ +5V, VOL ≤ -5V into 3 kΩ). Inverting with respect to DIN1. |+| 15 | GND | power_in | Ground reference for all logic and RS-232 signals, and for the charge-pump storage capacitors. |+| 16 | VCC | power_in | Positive supply voltage, +3.0 V to +5.5 V (nominal 3.3 V or 5 V). Supply current typ. 1.5 mA (no load). Recommend a 0.1 µF bypass capacitor from VCC to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BL Shanghai Belling |+| Package | TSSOP-16 |+| Category | Comm/UART |+| Pins | 16 |++## Ordering variants++- `BL13232ETSTS`+- `BL13232ETSSO`++## CAD (KiCad official)++- Symbol: `BL13232ETS`+- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`+- 3D model: TSSOP-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [BL Shanghai Belling datasheet](docs/bl13232ets-datasheet.pdf) (7 pp, sha256 `b3687a5ff9e86b68`, 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/bl13232ets-datasheet.pdf)

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