component
MAX3221IDBR
Public Made by Adomby adom
Texas Instruments RS232 ICs, SSOP-16-208mil. 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
markdownMAX3221IDBR
Texas Instruments · RS232 ICs · SSOP-16-208mil
MAX3221IDBR from Texas Instruments, in a SSOP-16-208mil. 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 | Low input enables receiver ROUT output; high input sets ROUT to high impedance. |
| 2 | C1+ | passive | Positive terminal for external 0.1-μF capacitor in voltage-doubler charge pump. |
| 3 | V+ | power_out | Positive supply (5.5 V nominal) generated by internal charge pump; maximum ±7 V to GND. |
| 4 | C1- | passive | Negative terminal for external 0.1-μF capacitor in voltage-doubler charge pump. |
| 5 | C2+ | passive | Positive terminal for external 0.1-μF capacitor in voltage-doubler charge pump. |
| 6 | C2- | passive | Negative terminal for external 0.1-μF capacitor in voltage-doubler charge pump. |
| 7 | V- | power_out | Negative supply (-5.5 V nominal) generated by internal charge pump; minimum -7 V to GND. |
| 8 | RIN | input | RS-232 receiver input; accepts ±25 V input voltage range. |
| 9 | ROUT | output | Receiver output; logic-level output with voltage range -0.3 to VCC+0.3 V. |
| 10 | INVALID | output | Invalid output pin; goes low when RIN input is unpowered for more than 30 μs. |
| 11 | DIN | input | Driver input; accepts 0 to 5.5 V logic level input. |
| 12 | FORCEON | input | Automatic power-down control input; low enables auto-shutdown feature. |
| 13 | DOUT | output | RS-232 driver output; ±13.2 V maximum output voltage rating. |
| 14 | GND | power_in | Ground reference (0 V). |
| 15 | VCC | power_in | Power supply input; 3.0 to 5.5 V single supply. |
| 16 | FORCEOFF | input | Automatic power-down control input; high disables driver output. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-16-208mil |
| Category | Interface |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
MAX3221IDBR - Footprint:
Package_SO:SSOP-16_5.3x6.2mm_P0.65mm - 3D model: SSOP-16-208mil (KiCad packages3D, STEP)
- 3D model files:
max3221idbr-etched.step/max3221idbr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max3221idbr.step/max3221idbr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (27 pp, sha256
212cc04529533d03, retrieved 2026-09-24, 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).