component
MAX211CDWR
Public Made by Adomby adom
Texas Instruments RS232 ICs, SOIC-28-300mil. 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
markdownMAX211CDWR
Texas Instruments · RS232 ICs · SOIC-28-300mil
MAX211CDWR from Texas Instruments, in a SOIC-28-300mil. 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 | DOUT3 | tri_state | RS-232 data output with high-level voltage 5-9V and low-level voltage -5 to -9V. |
| 2 | DOUT1 | tri_state | RS-232 data output with high-level voltage 5-9V and low-level voltage -5 to -9V. |
| 3 | DOUT2 | tri_state | RS-232 data output with high-level voltage 5-9V and low-level voltage -5 to -9V. |
| 4 | RIN2 | input | RS-232 line data input from remote RS-232 system accepting ±30V. |
| 5 | ROUT2 | tri_state | Logic data output to UART with high-level voltage 3.5V minimum and low-level voltage 0.4V maximum. |
| 6 | DIN2 | input | Logic data input from UART accepting 0V to 5.5V. |
| 7 | DIN1 | input | Logic data input from UART accepting 0V to 5.5V. |
| 8 | ROUT1 | tri_state | Logic data output to UART with high-level voltage 3.5V minimum and low-level voltage 0.4V maximum. |
| 9 | RIN1 | input | RS-232 line data input from remote RS-232 system accepting ±30V. |
| 10 | GND | power_in | Ground connection and reference for all voltage measurements. |
| 11 | VCC | power_in | Supply voltage input rated for 1.5V to 5.5V operation with nominal 5V. |
| 12 | C1+ | passive | Positive terminal of external 0.1µF charge pump capacitor. |
| 13 | V+ | power_out | Positive charge pump output voltage rated from VCC-0.3V to 14V for capacitor storage. |
| 14 | C1- | passive | Negative terminal of external 0.1µF charge pump capacitor. |
| 15 | C2+ | passive | Positive terminal of external 0.1µF charge pump capacitor. |
| 16 | C2- | passive | Negative terminal of external 0.1µF charge pump capacitor. |
| 17 | V- | power_out | Negative charge pump output voltage rated from 0.3V to -14V for capacitor storage. |
| 18 | RIN5 | input | RS-232 line data input from remote RS-232 system accepting ±30V. |
| 19 | ROUT5 | tri_state | Logic data output to UART with high-level voltage 3.5V minimum and low-level voltage 0.4V maximum. |
| 20 | DIN3 | input | Logic data input from UART accepting 0V to 5.5V. |
| 21 | DIN4 | input | Logic data input from UART accepting 0V to 5.5V. |
| 22 | ROUT4 | tri_state | Logic data output to UART with high-level voltage 3.5V minimum and low-level voltage 0.4V maximum. |
| 23 | RIN4 | input | RS-232 line data input from remote RS-232 system accepting ±30V. |
| 24 | EN | input | Active-low receiver output enable control; 0.8V low threshold and 2V high threshold disables receiver outputs to high impedance. |
| 25 | SHDN | input | Active-high shutdown control; 2V high threshold powers down all drivers and receivers to high impedance. |
| 26 | ROUT3 | tri_state | Logic data output to UART with high-level voltage 3.5V minimum and low-level voltage 0.4V maximum. |
| 27 | RIN3 | input | RS-232 line data input from remote RS-232 system accepting ±30V. |
| 28 | DOUT4 | tri_state | RS-232 data output with high-level voltage 5-9V and low-level voltage -5 to -9V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-28-300mil |
| Category | Interface |
| Pins | 28 |
CAD (KiCad official)
- Symbol:
MAX211CDWR - Footprint:
Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm - 3D model: SOIC-28-300mil (KiCad packages3D, STEP)
- 3D model files:
max211cdwr-etched.step/max211cdwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max211cdwr.step/max211cdwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (24 pp, sha256
503d338b6c9b2939, retrieved 2026-10-06, 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).