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TRS3243ECRHBR

Public Made by Adom

by adom

Texas Instruments RS232 ICs, VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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TRS3243ECRHBR

Texas Instruments · RS232 ICs · VQFN-32-EP(5x5)

TRS3243ECRHBR from Texas Instruments, in a VQFN-32-EP(5x5). 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 RIN1 input RS-232 receiver input accepting -25V to +25V signals.
2 RIN2 input RS-232 receiver input accepting -25V to +25V signals.
3 RIN3 input RS-232 receiver input accepting -25V to +25V signals.
4 RIN4 input RS-232 receiver input accepting -25V to +25V signals.
5 RIN5 input RS-232 receiver input accepting -25V to +25V signals.
6 DOUT1 output RS-232 driver output swinging approximately -5.4V to +5.4V.
7 DOUT2 output RS-232 driver output swinging approximately -5.4V to +5.4V.
8 DOUT3 output RS-232 driver output swinging approximately -5.4V to +5.4V.
9 NC unconnected Not connected internally.
10 DIN3 input Driver input accepting TTL/CMOS logic signals from 0V to VCC.
11 DIN2 input Driver input accepting TTL/CMOS logic signals from 0V to VCC.
12 DIN1 input Driver input accepting TTL/CMOS logic signals from 0V to VCC.
13 ROUT5 output Receiver output producing TTL/CMOS logic levels from 0V to VCC.
14 ROUT4 output Receiver output producing TTL/CMOS logic levels from 0V to VCC.
15 ROUT3 output Receiver output producing TTL/CMOS logic levels from 0V to VCC.
16 NC unconnected Not connected internally.
17 ROUT2 output Receiver output producing TTL/CMOS logic levels from 0V to VCC.
18 ROUT1 output Receiver output producing TTL/CMOS logic levels from 0V to VCC.
19 ROUT2B output Always-active noninverting receiver output that remains active during device shutdown.
20 INVALID output Invalid output pin indicating absence of valid RS-232 signal level.
21 FORCEOFF input Auto powerdown control input; pull to GND to force drivers off and reduce supply current to 1μA.
22 FORCEON input Auto powerdown control input; pull to GND to enable powerdown feature when FORCEOFF is high.
23 C1- passive Negative terminal of voltage doubler charge pump capacitor.
24 GND power_in Ground; power return and logic reference voltage.
25 NC unconnected Not connected internally.
26 VCC power_in 3V to 5.5V positive power supply input.
27 V+ power_out Positive charge pump output voltage supplying driver circuits.
28 C1+ passive Positive terminal of voltage doubler charge pump capacitor.
29 C2+ passive Positive terminal of voltage doubler charge pump capacitor.
30 C2- passive Negative terminal of voltage doubler charge pump capacitor.
31 V- power_out Negative charge pump output voltage supplying driver circuits.
32 NC unconnected Not connected internally.
33 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-32-EP(5x5)
Category Interface
Pins 33

CAD (KiCad official)

  • Symbol: TRS3243ECRHBR
  • Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • 3D model: VQFN-32-EP(5x5) (KiCad packages3D, STEP)
  • 3D model files: trs3243ecrhbr-etched.step / trs3243ecrhbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); trs3243ecrhbr.step / trs3243ecrhbr.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 2026-09-27, 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 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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