component
TRS3243EIDWR
Public Made by Adomby adom
Texas Instruments RS232 ICs, SOIC-28-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTRS3243EIDWR
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);trs3243eidwr.step/trs3243eidwr.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).