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Contents

README

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TRS232EIDWR

Texas Instruments · RS232 ICs · SOIC-16-300mil

TRS232EIDWR from Texas Instruments, 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 lead of the C1 charge-pump capacitor, which is connected between C1+ and C1− (1 µF in the typical circuit).
2 VS+ power_out Positive charge-pump output for the storage capacitor only; the datasheet gives an absolute maximum of VCC − 0.3 V to 15 V.
3 C1- passive Negative lead of the C1 charge-pump capacitor.
4 C2+ passive Positive lead of the C2 charge-pump capacitor.
5 C2- passive Negative lead of the C2 charge-pump capacitor.
6 VS- power_out Negative charge-pump output for the storage capacitor only; the datasheet gives an absolute range of −0.3 V to −15 V.
7 DOUT2 output RS-232 line data output to the remote RS-232 system; the absolute output range is VS− − 0.3 V to VS+ + 0.3 V.
8 RIN2 input RS-232 line data input from the remote RS-232 system, which accepts ±30 V.
9 ROUT2 output Logic data output to the UART; VOH is at least 3.5 V at IOH = −1 mA, and the absolute range is −0.3 V to VCC + 0.3 V.
10 DIN2 input Logic data input from the UART; VIH is 2 V minimum and VIL is 0.8 V maximum.
11 DIN1 input Logic data input from the UART; VIH is 2 V minimum and VIL is 0.8 V maximum.
12 ROUT1 output Logic data output to the UART; VOH is at least 3.5 V at IOH = −1 mA, and the absolute range is −0.3 V to VCC + 0.3 V.
13 RIN1 input RS-232 line data input from the remote RS-232 system, which accepts ±30 V.
14 DOUT1 output RS-232 line data output to the remote RS-232 system; the absolute output range is VS− − 0.3 V to VS+ + 0.3 V.
15 GND power_in Ground reference; all device voltages are referenced to network GND.
16 VCC power_in Supply voltage input, connected to an external 5 V supply; recommended range is 4.5 V to 5.5 V (5 V nominal).

Key specifications

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

CAD (KiCad official)

  • Symbol: TRS232EIDWR
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
  • 3D model files: trs232eidwr-etched.step / trs232eidwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); trs232eidwr.step / trs232eidwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (25 pp, sha256 d13b76bde456f007, 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