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TRS3243EIDWR

Public Made by Adom

by adom

Texas Instruments RS232 ICs, SOIC-28-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TRS3243EIDWR

Texas Instruments · RS232 ICs · SOIC-28-300mil

TRS3243EIDWR from Texas Instruments, in a SOIC-28-300mil. 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 C2+ passive Positive terminal of the voltage-doubler charge-pump capacitor (external 0.1 µF capacitor per the datasheet's 4 × 0.1 µF guidance).
2 C2- passive Negative terminal of the voltage-doubler charge-pump capacitor.
3 V- power_out Negative charge-pump output voltage; absolute maximum V- is -7 V with respect to network GND.
4 RIN1 input RS-232 receiver input; absolute maximum receiver input range is -25 V to 25 V.
5 RIN2 input RS-232 receiver input; absolute maximum receiver input range is -25 V to 25 V.
6 RIN3 input RS-232 receiver input; absolute maximum receiver input range is -25 V to 25 V.
7 RIN4 input RS-232 receiver input; absolute maximum receiver input range is -25 V to 25 V.
8 RIN5 input RS-232 receiver input; absolute maximum receiver input range is -25 V to 25 V.
9 DOUT1 output RS-232 driver output; absolute maximum driver output voltage is ±13.2 V.
10 DOUT2 output RS-232 driver output; absolute maximum driver output voltage is ±13.2 V.
11 DOUT3 output RS-232 driver output; absolute maximum driver output voltage is ±13.2 V.
12 DIN3 input Driver input; absolute maximum driver input voltage is -0.3 V to 6 V.
13 DIN2 input Driver input; absolute maximum driver input voltage is -0.3 V to 6 V.
14 DIN1 input Driver input; absolute maximum driver input voltage is -0.3 V to 6 V.
15 ROUT5 output Receiver output; absolute maximum receiver output voltage range is -0.3 V to VCC + 0.3 V.
16 ROUT4 output Receiver output; absolute maximum receiver output voltage range is -0.3 V to VCC + 0.3 V.
17 ROUT3 output Receiver output; absolute maximum receiver output voltage range is -0.3 V to VCC + 0.3 V.
18 ROUT2 output Receiver output; absolute maximum receiver output voltage range is -0.3 V to VCC + 0.3 V.
19 ROUT1 output Receiver output; absolute maximum receiver output voltage range is -0.3 V to VCC + 0.3 V.
20 ROUT2B output Always-active noninverting receiver output, which remains available for ring-indicator wake-up when the device is powered down.
21 INVALID output Invalid output pin that indicates when no valid RS-232 level is detected on the receiver inputs.
22 FORCEOFF input Auto-powerdown control input (see truth table); absolute maximum input voltage is -0.3 V to 6 V.
23 FORCEON input Auto-powerdown control input (see truth table); absolute maximum input voltage is -0.3 V to 6 V.
24 C1- passive Negative terminal of the voltage-doubler charge-pump capacitor.
25 GND power_in Ground reference for the device; all voltages are referenced to network GND.
26 VCC power_in Supply voltage; 3 V to 5.5 V.
27 V+ power_out Positive charge-pump output voltage; absolute maximum V+ is 7 V with respect to network GND.
28 C1+ passive Positive terminal of the voltage-doubler charge-pump capacitor.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-28-300mil
Category Interface
Pins 28

CAD (KiCad official)

  • Symbol: TRS3243EIDWR
  • Footprint: Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm
  • 3D model: SOIC-28-300mil (KiCad packages3D, STEP)
  • 3D model files: trs3243eidwr-etched.step / trs3243eidwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); trs3243eidwr.step / trs3243eidwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (32 pp, sha256 d01e3de0617eb95b, retrieved 2026-10-08, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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