component
TRS3221ECPWR
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
markdownTRS3221ECPWR
Texas Instruments · RS232 ICs · TSSOP-16
TRS3221ECPWR 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 and high input sets ROUT to high impedance. |
| 2 | C1+ | passive | Positive terminal of the voltage-doubler charge-pump capacitor C1, used with the 4 x 0.1 µF external capacitors. |
| 3 | V+ | power_out | 5.5-V supply generated by the charge pump. |
| 4 | C1- | passive | Negative terminal of the voltage-doubler charge-pump capacitor C1. |
| 5 | C2+ | passive | Positive terminal of the voltage-doubler charge-pump capacitor C2. |
| 6 | C2- | passive | Negative terminal of the voltage-doubler charge-pump capacitor C2. |
| 7 | V- | power_out | -5.5-V supply generated by the charge pump. |
| 8 | RIN | input | RS-232 receiver input with an absolute maximum input voltage range of -25 V to 25 V. |
| 9 | ROUT | output | Receiver output with an absolute voltage range of -0.3 V to VCC + 0.3 V. |
| 10 | INVALID | output | Invalid output that is low when all RIN inputs are unpowered. |
| 11 | DIN | input | Driver input with an absolute voltage range of -0.3 V to 6 V, accepting 5-V logic inputs. |
| 12 | FORCEON | input | Automatic power-down control input; with FORCEOFF high, a low level enables automatic power-down. |
| 13 | DOUT | output | RS-232 driver output with an absolute voltage range of -13.2 V to 13.2 V. |
| 14 | GND | power_in | Ground reference for the device (network GND). |
| 15 | VCC | power_in | 3-V to 5.5-V supply voltage with an absolute maximum rating of 6 V. |
| 16 | FORCEOFF | input | Automatic power-down control input; a low level turns off the driver and receiver and reduces supply current to 1 µA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | Communication Interface Chip/UART/485/232 |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
TRS3221ECPWR - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
trs3221ecpwr-etched.step/trs3221ecpwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);trs3221ecpwr.step/trs3221ecpwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (35 pp, sha256
1e4b931394147344, retrieved 2026-10-28, tier: manufacturer) - 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).