component
MAX3221ECPWR
Public Made by Adomby adom
Texas Instruments RS232 ICs, TSSOP-16. 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
markdownMAX3221ECPWR
Texas Instruments · RS232 ICs · TSSOP-16
MAX3221ECPWR from Texas Instruments, in a TSSOP-16. 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 | Logic input that enables receiver ROUT output when low; setting ROUT to high impedance when high. |
| 2 | C1+ | passive | Positive terminal of voltage doubler charge pump capacitor. |
| 3 | V+ | power_out | Charge pump generated 5.5V power supply. |
| 4 | C1- | passive | Negative terminal of voltage doubler charge pump capacitor. |
| 5 | C2+ | passive | Positive terminal of voltage doubler charge pump capacitor. |
| 6 | C2- | passive | Negative terminal of voltage doubler charge pump capacitor. |
| 7 | V- | power_out | Charge pump generated negative 5.5V power supply. |
| 8 | RIN | input | RS-232 receiver input; input voltage range -25V to +25V. |
| 9 | ROUT | output | Receiver output supplying standard logic level outputs. |
| 10 | INVALID | output | Status output pin that outputs low when RIN input is not powered or remains in indeterminate region for more than 30µs. |
| 11 | DIN | input | Driver input accepting standard logic level inputs. |
| 12 | FORCEON | input | Auto-powerdown control input. |
| 13 | DOUT | output | RS-232 driver output providing RS-232 level outputs from -5.4V to +5.4V. |
| 14 | GND | power_in | Ground reference. |
| 15 | VCC | power_in | Power supply voltage input, 3V to 5.5V. |
| 16 | FORCEOFF | input | Auto-powerdown control input. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | Interface |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
MAX3221ECPWR - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
max3221ecpwr-etched.step/max3221ecpwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max3221ecpwr.step/max3221ecpwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (32 pp, sha256
4bbd61beb76489a6, 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).