rs2254xq

@@ -0,0 +1,54 @@+# RS2254XQ++**Jiangsu RUNIC Tech** · Analog Switches, Multiplexers · TSSOP-14++RS2254XQ from Jiangsu RUNIC Tech, in a TSSOP-14. 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 | A IN/OUT | bidirectional | Switch A analog signal terminal (in/out). Bidirectional analog pass connection to pin 2 when Switch A control (pin 13) is HIGH. Signal range GND to VCC; RON ≈ 24 Ω typ at VCC=5 V. |+| 2 | A OUT/IN | bidirectional | Switch A analog signal terminal (out/in). Bidirectional analog pass connection to pin 1 when Switch A control (pin 13) is HIGH. |+| 3 | B OUT/IN | bidirectional | Switch B analog signal terminal (out/in). Bidirectional analog pass connection to pin 4 when Switch B control (pin 5) is HIGH. |+| 4 | B IN/OUT | bidirectional | Switch B analog signal terminal (in/out). Bidirectional analog pass connection to pin 3 when Switch B control (pin 5) is HIGH. |+| 5 | B | input | Digital control input for Switch B. HIGH (VIH ≥ 1.7 V) turns Switch B ON; LOW (VIL ≤ 0.5 V) turns it OFF. Must not be left floating - tie to VCC or GND when unused. |+| 6 | C | input | Digital control input for Switch C. HIGH turns Switch C ON; LOW turns it OFF. VIH ≥ 1.7 V, VIL ≤ 0.5 V. Must not be left floating. |+| 7 | GND | power_in | Device ground / negative supply reference. Sets the lower analog signal-range limit for all four switches. |+| 8 | C IN/OUT | bidirectional | Switch C analog signal terminal (in/out). Bidirectional analog pass connection to pin 9 when Switch C control (pin 6) is HIGH. |+| 9 | C OUT/IN | bidirectional | Switch C analog signal terminal (out/in). Bidirectional analog pass connection to pin 8 when Switch C control (pin 6) is HIGH. |+| 10 | D OUT/IN | bidirectional | Switch D analog signal terminal (out/in). Bidirectional analog pass connection to pin 11 when Switch D control (pin 12) is HIGH. |+| 11 | D IN/OUT | bidirectional | Switch D analog signal terminal (in/out). Bidirectional analog pass connection to pin 10 when Switch D control (pin 12) is HIGH. |+| 12 | D | input | Digital control input for Switch D. HIGH turns Switch D ON; LOW turns it OFF. VIH ≥ 1.7 V, VIL ≤ 0.5 V. Must not be left floating. |+| 13 | A | input | Digital control input for Switch A. HIGH turns Switch A ON; LOW turns it OFF. VIH ≥ 1.7 V, VIL ≤ 0.5 V. Must not be left floating. |+| 14 | VCC | power_in | Positive supply input. Recommended operating range 2.5 V to 5.5 V; absolute maximum 6 V. Bypass locally to GND (pin 7); sets the upper analog signal-range limit. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Jiangsu RUNIC Tech |+| Package | TSSOP-14 |+| Category | Interface |+| Pins | 14 |++## Ordering variants++- `RS2254XQ`+- `RS2254XQXP`++## CAD (KiCad official)++- Symbol: `RS2254XQ`+- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`+- 3D model: TSSOP-14 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Jiangsu RUNIC Tech datasheet](docs/rs2254xq-datasheet.pdf) (None pp, sha256 `4f774cbcfd85096a`, 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/rs2254xq-datasheet.pdf)

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