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MAX3223EIDBR

Public Made by Adom

by adom

Texas Instruments RS232 ICs, SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MAX3223EIDBR

Texas Instruments · RS232 ICs · SSOP-20-208mil

MAX3223EIDBR from Texas Instruments, in a SSOP-20-208mil. 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 EN input Receiver enable input; high level puts receiver outputs in high impedance, low level enables them (input high level 2 V at VCC 3.3 V, 2.4 V at 5 V, max 5.5 V).
2 C1+ passive Positive terminal of charge-pump capacitor C1 (0.1 µF at VCC 3.3 V, 0.047 µF at 5 V).
3 V+ power_out Positive charge-pump output supply for RS-232 levels, bypassed with a capacitor to GND; abs max 7 V.
4 C1− passive Negative terminal of charge-pump capacitor C1.
5 C2+ passive Positive terminal of charge-pump capacitor C2.
6 C2− passive Negative terminal of charge-pump capacitor C2.
7 V− power_out Negative charge-pump output supply for RS-232 levels, bypassed with a capacitor to GND; abs max −7 V.
8 DOUT2 output RS-232 driver 2 output with ±15 kV HBM ESD protection; output swing at least ±5 V into 3 kΩ.
9 RIN2 input RS-232 receiver 2 input with ±15 kV HBM ESD protection, input range ±25 V, 5 kΩ nominal input resistance.
10 ROUT2 output Logic-level receiver 2 output, high-impedance when EN is high.
11 INVALID output Valid-signal flag: high when any receiver input is beyond ±2.7 V or in the ±0.3 V band for less than 30 µs, low if within ±0.3 V for more than 30 µs.
12 DIN2 input Logic input for driver 2 (input high level 2 V at VCC 3.3 V, 2.4 V at 5 V, max 5.5 V).
13 DIN1 input Logic input for driver 1 (input high level 2 V at VCC 3.3 V, 2.4 V at 5 V, max 5.5 V).
14 FORCEON input Drives auto-powerdown control: low with FORCEOFF high enables auto-powerdown, high with FORCEOFF high disables it.
15 ROUT1 output Logic-level receiver 1 output, high-impedance when EN is high.
16 RIN1 input RS-232 receiver 1 input with ±15 kV HBM ESD protection, input range ±25 V, 5 kΩ nominal input resistance.
17 DOUT1 output RS-232 driver 1 output with ±15 kV HBM ESD protection; output swing at least ±5 V into 3 kΩ.
18 GND power_in Ground.
19 VCC power_in Supply voltage, 3 V to 3.6 V or 4.5 V to 5.5 V recommended (abs max 6 V), bypassed with a ceramic capacitor.
20 FORCEOFF input Low level powers off drivers (and receivers if EN high) reducing supply current to about 1 µA; high allows operation or auto-powerdown.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-20-208mil
Category Interface
Pins 20

CAD (KiCad official)

  • Symbol: MAX3223EIDBR
  • Footprint: Package_SO:SSOP-20_5.3x7.2mm_P0.65mm
  • 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
  • 3D model files: max3223eidbr-etched.step / max3223eidbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3223eidbr.step / max3223eidbr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (28 pp, sha256 45ca048c81e9b2a5, retrieved 2026-10-07, 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-4-5-20251001 (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