component
ws3220eca
Public Unreviewedby Ray
GEC Pre-ordered Chips, SSOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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markdownWS3220ECA
GEC · Pre-ordered Chips · SSOP-16
WS3220ECA from GEC, in a SSOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | XEN | input | Receiver enable, active low. When driven high the receiver output (R1OUT) is forced to a high-impedance (tri-state) condition. |
| 2 | C1+ | passive | Positive terminal of the voltage-doubler (boost) charge-pump flying capacitor. Connect a 0.1 µF capacitor between C1+ and C1-. |
| 3 | V+ | power_out | Charge-pump generated positive supply, nominally +5.4V. Bypass to GND with a 0.1 µF capacitor (C3). |
| 4 | C1- | passive | Negative terminal of the voltage-doubler (boost) charge-pump flying capacitor. Connect a 0.1 µF capacitor between C1+ and C1-. |
| 5 | C2+ | passive | Positive terminal of the inverting charge-pump flying capacitor. Connect a 0.1 µF capacitor between C2+ and C2-. |
| 6 | C2- | passive | Negative terminal of the inverting charge-pump flying capacitor. Connect a 0.1 µF capacitor between C2+ and C2-. |
| 7 | V- | power_out | Charge-pump generated negative supply, nominally -5.4V. Bypass to GND with a 0.1 µF capacitor (C4). |
| 8 | R1IN | input | RS-232 receiver input for channel 1. Accepts ±20V input swing with typical 5 kΩ input impedance (3-7 kΩ) and 0.8V/2.4V logic thresholds. |
| 9 | R1OUT | output | TTL/CMOS receiver output for channel 1. Drives VOL ≤ 0.4V at 1.6 mA and VOH ≥ VCC-0.6V at -1.0 mA; tri-stated when XEN is high. |
| 10 | NC | unconnected | No connect. Leave floating or tie to GND for best noise immunity. |
| 11 | T1IN | input | TTL/CMOS driver input for channel 1. Logic thresholds: VIL ≤ 0.8V, VIH ≥ 2.4V, with 0.5V typical hysteresis and ±1 µA maximum leakage. |
| 12 | NC | unconnected | No connect. Leave floating or tie to GND for best noise immunity. |
| 13 | T1OUT | output | RS-232 driver output for channel 1. Delivers ±5V minimum into a 3 kΩ load with 300 Ω output resistance and ±60 mA short-circuit current; tri-stated in shutdown. |
| 14 | GND | power_in | Device ground return for both logic and charge-pump circuitry. |
| 15 | VCC | power_in | Primary supply input, +3.0V to +3.6V (typical 3.3V). Bypass to GND with a 0.1 µF capacitor. |
| 16 | XSD | input | Shutdown control, active low. Driving XSD low disables the driver and the charge-pump voltage converter, reducing supply current to ~1 µA (10 µA max). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | GEC |
| Package | SSOP-16 |
| Category | Interface |
| Pins | 16 |
Ordering variants
WS3220ECAWS3220ECAECY
CAD (KiCad official)
- Symbol:
WS3220ECA - Footprint:
Package_SO:SSOP-16_5.3x6.2mm_P0.65mm - 3D model: SSOP-16 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: GEC datasheet (None pp, sha256
9878821814fb6776, retrieved 2026-08-17, 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:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).