component
MAX3221IPWR
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
markdownMAX3221IPWR
Texas Instruments · RS232 ICs · TSSOP-16
MAX3221IPWR 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 | Low input enables the receiver ROUT output; a high input sets ROUT to high impedance. |
| 2 | C1+ | passive | Positive terminal of the voltage-doubler charge-pump capacitors (C1). |
| 3 | V+ | power_out | 5.5-V supply generated by the charge pump. |
| 4 | C1- | passive | Negative terminal of the voltage-doubler charge-pump capacitors (C1). |
| 5 | C2+ | passive | Positive terminal of the voltage-doubler charge-pump capacitors (C2). |
| 6 | C2- | passive | Negative terminal of the voltage-doubler charge-pump capacitors (C2). |
| 7 | V- | power_out | -5.5-V supply generated by the charge pump. |
| 8 | RIN | input | RS-232 receiver input, rated for a receiver input voltage of -25 V to 25 V. |
| 9 | ROUT | output | Receiver output; ROUT to GND is rated from -0.3 V to VCC + 0.3 V. |
| 10 | INVALID | output | Invalid output that goes low when all RIN inputs are unpowered. |
| 11 | DIN | input | Driver input that must be held at a valid low or high logic level and must not be left unconnected. |
| 12 | FORCEON | input | Automatic power-down control input that must not be left unconnected. |
| 13 | DOUT | output | RS-232 driver output, rated to ±13.2 V to GND. |
| 14 | GND | power_in | Ground reference for the device. |
| 15 | VCC | power_in | 3-V to 5.5-V supply voltage. |
| 16 | FORCEOFF | input | Automatic power-down control input that must not be left unconnected. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | Interface |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
MAX3221IPWR - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
max3221ipwr-etched.step/max3221ipwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max3221ipwr.step/max3221ipwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (27 pp, sha256
c76ba6abfe263b39, retrieved 2026-10-08, 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-5-5(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).