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Contents

README

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TRS3227EIDB

Texas Instruments · RS232 ICs · SSOP-16-208mil

TRS3227EIDB from Texas Instruments, in a SSOP-16-208mil. 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 READY output Ready to transmit output, active high, enabled when V- goes below -3.5 V and the device is ready to transmit.
2 C1+ passive Positive terminal of voltage-doubler charge-pump capacitor.
3 V+ power_out Positive supply output voltage +2 × VCC generated by the charge pump.
4 C1− passive Negative terminal of voltage-doubler charge-pump capacitor.
5 C2+ passive Positive terminal of inverting charge-pump capacitor.
6 C2− passive Negative terminal of inverting charge-pump capacitor.
7 V− power_out Negative supply output voltage −2 × VCC generated by the charge pump.
8 RIN input RS-232 receiver input.
9 ROUT output CMOS receiver output.
10 INVALID output Valid signal detector output, active low; a logic high indicates that a valid RS-232 level is present on a receiver input.
11 DIN input CMOS driver input.
12 FORCEON input Force-on input, active high; drive high to override powerdown, keeping drivers and receivers on when FORCEOFF is high.
13 DOUT output RS-232 driver output.
14 GND power_in Ground.
15 VCC power_in 3 V to 5.5 V single-supply voltage input.
16 FORCEOFF input Force-off input, active low; drive low to shut down drivers, receivers, and charge pump, overriding auto-shutdown and FORCEON.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-16-208mil
Category Interface
Pins 16

CAD (KiCad official)

  • Symbol: TRS3227EIDB
  • Footprint: Package_SO:SSOP-16_5.3x6.2mm_P0.65mm
  • 3D model: SSOP-16-208mil (KiCad packages3D, STEP)
  • 3D model files: trs3227eidb-etched.step / trs3227eidb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); trs3227eidb.step / trs3227eidb.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (18 pp, sha256 7db13a083d90c1a4, retrieved 2026-10-01, 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