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MAX3243IDBR

Public Made by Adom

by adom

Texas Instruments RS232 ICs, SSOP-28-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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MAX3243IDBR

Texas Instruments · RS232 ICs · SSOP-28-208mil

MAX3243IDBR from Texas Instruments, in a SSOP-28-208mil. 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 C2+ passive Positive terminal of external charge pump capacitor C2.
2 C2- passive Negative terminal of external charge pump capacitor C2.
3 V- power_out Negative charge pump output for external storage capacitor; voltage rating -7 V to 0.3 V.
4 RIN1 input RS-232 receiver input with internal load; voltage rating -25 V to 25 V.
5 RIN2 input RS-232 receiver input with internal load; voltage rating -25 V to 25 V.
6 RIN3 input RS-232 receiver input with internal load; voltage rating -25 V to 25 V.
7 RIN4 input RS-232 receiver input with internal load; voltage rating -25 V to 25 V.
8 RIN5 input RS-232 receiver input with internal load; voltage rating -25 V to 25 V.
9 DOUT1 output RS-232 driver output to remote system; voltage rating -13.2 V to 13.2 V; maximum data rate 250 kbit/s.
10 DOUT2 output RS-232 driver output to remote system; voltage rating -13.2 V to 13.2 V; maximum data rate 250 kbit/s.
11 DOUT3 output RS-232 driver output to remote system; voltage rating -13.2 V to 13.2 V; maximum data rate 250 kbit/s.
12 DIN3 input Logic driver input from UART; voltage rating 0 V to 5.5 V.
13 DIN2 input Logic driver input from UART; voltage rating 0 V to 5.5 V.
14 DIN1 input Logic driver input from UART; voltage rating 0 V to 5.5 V.
15 ROUT5 output Logic receiver output to UART; voltage rating -0.3 V to VCC + 0.3 V.
16 ROUT4 output Logic receiver output to UART; voltage rating -0.3 V to VCC + 0.3 V.
17 ROUT3 output Logic receiver output to UART; voltage rating -0.3 V to VCC + 0.3 V.
18 ROUT2 output Logic receiver output to UART; voltage rating -0.3 V to VCC + 0.3 V.
19 ROUT1 output Logic receiver output to UART; voltage rating -0.3 V to VCC + 0.3 V.
20 ROUT2B output Always-active non-inverting receiver output for RIN2, normally used for ring indicator detection.
21 INVALID output Active-low status output indicating all receiver inputs are unpowered; voltage rating -0.3 V to VCC + 0.3 V.
22 FORCEOFF input Control input; low forces all driver and receiver outputs (except ROUT2B) to high impedance; voltage rating 0 V to 5.5 V.
23 FORCEON input Control input; high forces drivers on, low enables automatic power-down mode; voltage rating 0 V to 5.5 V.
24 C1- passive Negative terminal of external charge pump capacitor C1.
25 GND power_in Ground reference (0 V).
26 VCC power_in Main power supply input; connect to 3 V to 5.5 V source.
27 V+ power_out Positive charge pump output for external storage capacitor; voltage rating -0.3 V to 7 V.
28 C1+ passive Positive terminal of external charge pump capacitor C1.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-28-208mil
Category Interface
Pins 28

CAD (KiCad official)

  • Symbol: MAX3243IDBR
  • Footprint: Package_SO:SSOP-28_5.3x10.2mm_P0.65mm
  • 3D model: SSOP-28-208mil (KiCad packages3D, STEP)
  • 3D model files: max3243idbr-etched.step / max3243idbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3243idbr.step / max3243idbr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (27 pp, sha256 21e5b8a04a566ebb, retrieved 2026-09-26, 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