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TRS3223ECDBR

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by adom

Texas Instruments RS232 ICs, SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TRS3223ECDBR

Texas Instruments · RS232 ICs · SSOP-20-208mil

TRS3223ECDBR from Texas Instruments, in a SSOP-20-208mil. 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 EN input Receiver enable input; high puts receiver outputs in high impedance, low enables them (logic high ≥2 V at 3.3 V, input range 0 to 5.5 V).
2 C1+ passive Positive terminal of charge-pump capacitor C1 (0.1 µF at 3.3 V, 0.047 µF at 5 V).
3 V+ power_out Positive charge-pump output supply for RS-232 drivers, decoupled with capacitor C3 (to VCC or GND), absolute max 7 V.
4 C1− passive Negative terminal of charge-pump capacitor C1.
5 C2+ passive Positive terminal of charge-pump capacitor C2 (0.1 µF at 3.3 V, 0.33 µF at 5 V).
6 C2− passive Negative terminal of charge-pump capacitor C2.
7 V− power_out Negative charge-pump output supply for RS-232 drivers, decoupled with capacitor C4, absolute max −7 V.
8 DOUT2 output RS-232 driver 2 output with ±15-kV HBM ESD protection, swing at least ±5 V into 3 kΩ.
9 RIN2 input RS-232 receiver 2 input with ±15-kV HBM ESD protection, input range ±25 V and 3 to 5 kΩ input resistance.
10 ROUT2 output Logic-level receiver 2 output, high-impedance when EN is high.
11 INVALID output Valid-signal indicator output, high when any receiver input is beyond ±2.7 V, low when inputs stay between −0.3 V and 0.3 V for more than 30 µs.
12 DIN2 input Logic-level driver 2 input, 5.5 V tolerant with VIH ≥2 V at 3.3 V supply and VIL ≤0.8 V.
13 DIN1 input Logic-level driver 1 input, 5.5 V tolerant with VIH ≥2 V at 3.3 V supply and VIL ≤0.8 V.
14 FORCEON input Drive high with FORCEOFF high to disable auto-powerdown; low with FORCEOFF high enables auto-powerdown.
15 ROUT1 output Logic-level receiver 1 output, high-impedance when EN is high.
16 RIN1 input RS-232 receiver 1 input with ±15-kV HBM ESD protection, input range ±25 V and 3 to 5 kΩ input resistance.
17 DOUT1 output RS-232 driver 1 output with ±15-kV HBM ESD protection, swing at least ±5 V into 3 kΩ.
18 GND power_in Ground, with ±15-kV ESD protection on the serial-port connection pins including GND.
19 VCC power_in Supply voltage, 3 V to 5.5 V (3.3 V ± 0.3 V or 5 V ± 0.5 V), absolute max 6 V, with 0.1 µF bypass capacitor.
20 FORCEOFF input Active-low power-off control; low shuts off drivers and receivers (supply current reduced to 1 µA), high allows normal or auto-powerdown operation.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-20-208mil
Category Interface
Pins 20

CAD (KiCad official)

  • Symbol: TRS3223ECDBR
  • Footprint: Package_SO:SSOP-20_5.3x7.2mm_P0.65mm
  • 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
  • 3D model files: trs3223ecdbr-etched.step / trs3223ecdbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); trs3223ecdbr.step / trs3223ecdbr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (23 pp, sha256 94c1b9eddaa8933f, retrieved 2026-10-11, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (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