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ST202ECDR

STMicroelectronics · RS232 ICs · SOIC-16-300mil

ST202ECDR from STMicroelectronics, in a SOIC-16-300mil. 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 C1+ passive Positive terminal for first charge pump capacitor; connect 0.1 µF external capacitor for proper charge pump operation.
2 V+ power_out Doubled voltage terminal generating positive supply voltage from (VCC-0.3) to 14V for transmitter output biasing.
3 C1- passive Negative terminal for first charge pump capacitor; connect 0.1 µF external capacitor for proper charge pump operation.
4 C2+ passive Positive terminal for second charge pump capacitor; connect 0.1 µF external capacitor for proper charge pump operation.
5 C2- passive Negative terminal for second charge pump capacitor; connect 0.1 µF external capacitor for proper charge pump operation.
6 V- power_out Inverted voltage terminal generating negative supply voltage from -14 to 0.3V for transmitter output biasing.
7 T2OUT output Second transmitter RS-232 output with voltage swing of ±5 to ±9V when loaded with 3 kΩ to GND, data rate up to 230 kbps.
8 R2IN input Second receiver RS-232 input with operating voltage range from -30 to 30V and input resistance of 3 to 7 kΩ.
9 R2OUT output Second receiver TTL/CMOS output with low voltage ≤0.4V at 3.2 mA and high voltage ≥VCC-0.4V at -1 mA.
10 T2IN input Second transmitter TTL/CMOS input with logic threshold low of 0.8V and high of 2V, input leakage current ±10 µA.
11 T1IN input First transmitter TTL/CMOS input with logic threshold low of 0.8V and high of 2V, input leakage current ±10 µA.
12 R1OUT output First receiver TTL/CMOS output with low voltage ≤0.4V at 3.2 mA and high voltage ≥VCC-0.4V at -1 mA.
13 R1IN input First receiver RS-232 input with operating voltage range from -30 to 30V and input resistance of 3 to 7 kΩ.
14 T1OUT output First transmitter RS-232 output with voltage swing of ±5 to ±9V when loaded with 3 kΩ to GND, data rate up to 230 kbps.
15 GND power_in Ground (0V reference) for all device circuitry.
16 VCC power_in Supply voltage 5V ±10% with typical quiescent current of 10 mA at no load.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOIC-16-300mil
Category Interface
Pins 16

CAD (KiCad official)

  • Symbol: ST202ECDR
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
  • 3D model files: st202ecdr-etched.step / st202ecdr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); st202ecdr.step / st202ecdr.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (18 pp, sha256 fe41e6c8c1ca7890, retrieved 2026-10-03, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-5-5 (agreed), 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