component
MAX3223EIDBR
Public Made by Adomby adom
Texas Instruments RS232 ICs, SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMAX3223EIDBR
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max3223eidbr.step/max3223eidbr.glbare 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).