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MAX3232EIDR

Public Made by Adom

by adom

Texas Instruments RS232 ICs, SOIC-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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MAX3232EIDR

Texas Instruments · RS232 ICs · SOIC-16

MAX3232EIDR from Texas Instruments, in a SOIC-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 C1+ passive Positive lead of charge-pump flying capacitor C1 (typ. 0.1 µF). Connect to positive terminal of C1.
2 V+ power_out Positive charge-pump output (~+5.5 V generated from VCC). Connect to a 0.1 µF storage capacitor to GND. For storage capacitor only, not intended to source external loads.
3 C1- passive Negative lead of charge-pump flying capacitor C1 (typ. 0.1 µF).
4 C2+ passive Positive lead of charge-pump flying capacitor C2 (typ. 0.1 µF).
5 C2- passive Negative lead of charge-pump flying capacitor C2 (typ. 0.1 µF).
6 V- power_out Negative charge-pump output (~-5.5 V generated from VCC). Connect to a 0.1 µF storage capacitor to GND. For storage capacitor only.
7 DOUT2 output RS-232 line data output from driver 2 (to remote RS-232 system). Swings between V+ and V- levels. ±15-kV IEC ESD protected.
8 RIN2 input RS-232 line data input to receiver 2 (from remote RS-232 system). Accepts ±25 V input. ±15-kV IEC ESD protected. Input resistance 3-7 kΩ.
9 ROUT2 output Logic-level data output of receiver 2 (to UART). CMOS logic swing referenced to VCC.
10 DIN2 input Logic-level data input to driver 2 (from UART). Accepts 3-V to 5-V logic. VIH ≥ 2.0 V (3.3 V VCC) or 2.4 V (5 V VCC).
11 DIN1 input Logic-level data input to driver 1 (from UART). Accepts 3-V to 5-V logic. VIH ≥ 2.0 V (3.3 V VCC) or 2.4 V (5 V VCC).
12 ROUT1 output Logic-level data output of receiver 1 (to UART). CMOS logic swing referenced to VCC.
13 RIN1 input RS-232 line data input to receiver 1 (from remote RS-232 system). Accepts ±25 V input. ±15-kV IEC ESD protected. Input resistance 3-7 kΩ.
14 DOUT1 output RS-232 line data output from driver 1 (to remote RS-232 system). Swings between V+ and V- levels. ±15-kV IEC ESD protected.
15 GND power_in Ground reference for all internal circuitry and the RS-232 signal return.
16 VCC power_in Supply voltage input. Connect to external 3-V to 5.5-V supply. ICC ≈ 0.3 mA typical (1 mA max) at no load. A 1-µF bypass capacitor between VCC and GND is required for D, DB, and PW packages to meet the ±15-kV IEC 61000-4-2 rating.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • MAX3232EIDR
  • MAX3232EIDRECD
  • MAX3232EIDRIDBR
  • MAX3232EIDRIDB
  • MAX3232EIDRIDWR
  • MAX3232EIDRIDW
  • MAX3232EIDRIPWR
  • MAX3232EIDRIPW

CAD (KiCad official)

  • Symbol: MAX3232EIDR
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOIC-16 (KiCad packages3D, STEP)
  • 3D model files: max3232eidr-etched.step / max3232eidr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3232eidr.step / max3232eidr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (30 pp, sha256 d0b60e141b7939b2, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF