ST26C31BTR

@@ -0,0 +1,57 @@+# ST26C31BTR++**STMicroelectronics** · RS-485 / RS-422 ICs · TSSOP-16++ST26C31BTR from STMicroelectronics, 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 | AIN | input | Channel A single-ended TTL/CMOS input. Drives the channel A differential output pair. |+| 2 | AOUT | output | Channel A non-inverting differential (RS-422) output. 3-state output enabled by the EN/nEN pins. |+| 3 | /AOUT | output | Channel A inverting differential (RS-422) output. 3-state output enabled by the EN/nEN pins. |+| 4 | EN | input | Active-high enable input. When EN is low and /EN (pin 12) is high, all four channel outputs go to the high-impedance state. |+| 5 | /BOUT | output | Channel B inverting differential (RS-422) output. 3-state output enabled by the EN/nEN pins. |+| 6 | BOUT | output | Channel B non-inverting differential (RS-422) output. 3-state output enabled by the EN/nEN pins. |+| 7 | BIN | input | Channel B single-ended TTL/CMOS input. Drives the channel B differential output pair. |+| 8 | GND | power_in | Ground reference (0 V). |+| 9 | CIN | input | Channel C single-ended TTL/CMOS input. Drives the channel C differential output pair. |+| 10 | COUT | output | Channel C non-inverting differential (RS-422) output. 3-state output enabled by the EN/nEN pins. |+| 11 | /COUT | output | Channel C inverting differential (RS-422) output. 3-state output enabled by the EN/nEN pins. |+| 12 | /EN | input | Active-low enable input. When /EN is high and EN (pin 4) is low, all four channel outputs go to the high-impedance state. |+| 13 | /DOUT | output | Channel D inverting differential (RS-422) output. 3-state output enabled by the EN/nEN pins. |+| 14 | DOUT | output | Channel D non-inverting differential (RS-422) output. 3-state output enabled by the EN/nEN pins. |+| 15 | DIN | input | Channel D single-ended TTL/CMOS input. Drives the channel D differential output pair. |+| 16 | VCC | power_in | Supply voltage input. Recommended operating range 4.5 V to 5.5 V (absolute max 7 V). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | TSSOP-16 |+| Category | Interface |+| Pins | 16 |++## Ordering variants++- `ST26C31BTRTR`+- `ST26C31BTRDR`+- `ST26C31BTRN`++## CAD (KiCad official)++- Symbol: `ST26C31BTR`+- 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:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/st26c31btr.pdf) (15 pp, sha256 `628b38556e56079d`, retrieved 2026-08-17, tier: manufacturer)+- **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/st26c31btr-datasheet.pdf)

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