component
SN65C3221EPWR
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
markdownSN65C3221EPWR
Texas Instruments · RS232 ICs · TSSOP-16
SN65C3221EPWR 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 receiver ROUT output; high input sets ROUT to high impedance. |
| 2 | C1+ | passive | Positive terminal of voltage-doubler charge-pump capacitor. |
| 3 | V+ | power_out | Positive 5.5-V supply generated by the charge pump. |
| 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 | Negative 5.5-V supply generated by the charge pump. |
| 8 | RIN | input | RS-232 receiver input accepting signal levels from -25 V to +25 V. |
| 9 | ROUT | output | Receiver output with high-level voltage VCC - 0.6 V to VCC - 0.1 V and low-level voltage 0.4 V maximum. |
| 10 | INVALID | output | Invalid output indicator; high when receiver input signal is valid, low when idle or invalid. |
| 11 | DIN | input | Driver input for control of RS-232 driver output. |
| 12 | FORCEON | input | Automatic power-down control input. |
| 13 | DOUT | output | RS-232 driver output with high-level voltage 5-5.4 V and low-level voltage -5 to -5.4 V at 3 kΩ load. |
| 14 | GND | power_in | Ground reference. |
| 15 | VCC | power_in | 3-V to 5.5-V supply voltage. |
| 16 | FORCEOFF | input | Automatic power-down control input. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | Interface |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
SN65C3221EPWR - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
sn65c3221epwr-etched.step/sn65c3221epwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn65c3221epwr.step/sn65c3221epwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (26 pp, sha256
9594b72cc092ac32, retrieved 2026-09-27, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).