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RS244YS20

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Jiangsu RUNIC Tech Buffer/Driver/Transceiver, SOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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RS244YS20

Jiangsu RUNIC Tech · Buffer/Driver/Transceiver · SOP-20

RS244YS20 from Jiangsu RUNIC Tech, in a SOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 1OE input Active-low output enable for the 1Y outputs; pulling it HIGH places all 1Y outputs in the high-impedance 3-state mode.
2 1A0 input Non-inverting data input of the 1A0 channel, passed to its Y output when the output enable is LOW.
3 2Y0 output 3-state buffered output that follows its A-port input when enabled and goes high-impedance when its output enable is HIGH.
4 1A1 input Non-inverting data input of the 1A1 channel, passed to its Y output when the output enable is LOW.
5 2Y1 output 3-state buffered output that follows its A-port input when enabled and goes high-impedance when its output enable is HIGH.
6 1A2 input Non-inverting data input of the 1A2 channel, passed to its Y output when the output enable is LOW.
7 2Y2 output 3-state buffered output that follows its A-port input when enabled and goes high-impedance when its output enable is HIGH.
8 1A3 input Non-inverting data input of the 1A3 channel, passed to its Y output when the output enable is LOW.
9 2Y3 output 3-state buffered output that follows its A-port input when enabled and goes high-impedance when its output enable is HIGH.
10 GND power_in Ground reference for the device.
11 2A3 input Non-inverting data input of the 2A3 channel, passed to its Y output when the output enable is LOW.
12 1Y3 output 3-state buffered output that follows its A-port input when enabled and goes high-impedance when its output enable is HIGH.
13 2A2 input Non-inverting data input of the 2A2 channel, passed to its Y output when the output enable is LOW.
14 1Y2 output 3-state buffered output that follows its A-port input when enabled and goes high-impedance when its output enable is HIGH.
15 2A1 input Non-inverting data input of the 2A1 channel, passed to its Y output when the output enable is LOW.
16 1Y1 output 3-state buffered output that follows its A-port input when enabled and goes high-impedance when its output enable is HIGH.
17 2A0 input Non-inverting data input of the 2A0 channel, passed to its Y output when the output enable is LOW.
18 1Y0 output 3-state buffered output that follows its A-port input when enabled and goes high-impedance when its output enable is HIGH.
19 2OE input Active-low output enable for the 2Y outputs; pulling it HIGH places all 2Y outputs in the high-impedance 3-state mode.
20 VCC power_in Supply voltage, specified from 1.65 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer Jiangsu RUNIC Tech
Package SOP-20
Category Logic ICs
Pins 20

CAD (KiCad official)

  • Symbol: RS244YS20
  • Footprint: Package_SO:SOP-20_7.5x12.8mm_P1.27mm
  • 3D model: SOP-20 (KiCad packages3D, STEP)
  • 3D model files: rs244ys20-etched.step / rs244ys20-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rs244ys20.step / rs244ys20.glb are the bare package body.

Provenance

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

  • Datasheet: Jiangsu RUNIC Tech datasheet (14 pp, sha256 f42c0f1a0eb2c483, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus off (skipped (clean text read)), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF