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FSW6820YQFN40G
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Full Way Analog Switches, Multiplexers, QFN-40L-EP(5x5). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+79@@ -0,0 +1,79 @@+# FSW6820YQFN40G++**Full Way** · Analog Switches, Multiplexers · QFN-40L-EP(5x5)++FSW6820YQFN40G from Full Way, in a QFN-40L-EP(5x5). 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 | EN1 | input | Enable pin, active low. Controls channels 1 (Super Speed port A/B/C signals). Internal 2 MOhm pull-up resistor. When high, device is in shutdown/power-down. |+| 2 | SEL1 | input | Select pin. Along with SEL2 selects which of the 4 differential channels is routed to COM. Internal 2 MOhm pull-down resistor. |+| 3 | COMAN | bidirectional | Negative differential signal 1 for USB 3.1 port COM. Common port A negative, connects to selected DA1N/DB1N/DC1N. |+| 4 | COMAP | bidirectional | Positive differential signal 1 for USB 3.1 port COM. Common port A positive, connects to selected DA1P/DB1P/DC1P. |+| 5 | COMBN | bidirectional | Negative differential signal 2 for USB 3.1 port COM. Common port B negative. |+| 6 | COMBP | bidirectional | Positive differential signal 2 for USB 3.1 port COM. Common port B positive. |+| 7 | COMCN | bidirectional | Negative differential signal 3 for USB 2.0 port COM. Common port C (USB 2.0 DM) negative. |+| 8 | COMCP | bidirectional | Positive differential signal 3 for USB 2.0 port COM. Common port C (USB 2.0 DP) positive. |+| 9 | DC4N | bidirectional | Negative differential signal 4 for USB 2.0 port C. Channel 4 USB 2.0 DM. |+| 10 | DC4P | bidirectional | Positive differential signal 4 for USB 2.0 port C. Channel 4 USB 2.0 DP. |+| 11 | DC3N | bidirectional | Negative differential signal 3 for USB 2.0 port C. Channel 3 USB 2.0 DM. |+| 12 | DC3P | bidirectional | Positive differential signal 3 for USB 2.0 port C. Channel 3 USB 2.0 DP. |+| 13 | VCC | power_in | Positive supply voltage. Operating range 1.8V to 4.5V (typical 3V). Absolute max -0.5V to +5.5V. |+| 14 | EN3 | input | Enable pin, active low. Internal 2 MOhm pull-up resistor. When high, device is in shutdown/power-down. |+| 15 | DB4P | bidirectional | Positive differential signal 4 for USB 3.1 port B. Channel 4 SuperSpeed port B positive. |+| 16 | DB4N | bidirectional | Negative differential signal 4 for USB 3.1 port B. Channel 4 SuperSpeed port B negative. |+| 17 | DA4P | bidirectional | Positive differential signal 4 for USB 3.1 port A. Channel 4 SuperSpeed port A positive. |+| 18 | DA4N | bidirectional | Negative differential signal 4 for USB 3.1 port A. Channel 4 SuperSpeed port A negative. |+| 19 | DB3P | bidirectional | Positive differential signal 3 for USB 3.1 port B. |+| 20 | DB3N | bidirectional | Negative differential signal 3 for USB 3.1 port B. |+| 21 | DA3P | bidirectional | Positive differential signal 3 for USB 3.1 port A. |+| 22 | DA3N | bidirectional | Negative differential signal 3 for USB 3.1 port A. |+| 23 | DB2P | bidirectional | Positive differential signal 2 for USB 3.1 port B. |+| 24 | DB2N | bidirectional | Negative differential signal 2 for USB 3.1 port B. |+| 25 | DA2P | bidirectional | Positive differential signal 2 for USB 3.1 port A. |+| 26 | DA2N | bidirectional | Negative differential signal 2 for USB 3.1 port A. |+| 27 | VCC | power_in | Positive supply voltage. Operating range 1.8V to 4.5V (typical 3V). |+| 28 | GND | power_in | Power ground reference. |+| 29 | DC2P | bidirectional | Positive differential signal 2 for USB 2.0 port C. Channel 2 USB 2.0 DP. |+| 30 | DC2N | bidirectional | Negative differential signal 2 for USB 2.0 port C. Channel 2 USB 2.0 DM. |+| 31 | DC1P | bidirectional | Positive differential signal 1 for USB 2.0 port C. Channel 1 USB 2.0 DP. |+| 32 | DC1N | bidirectional | Negative differential signal 1 for USB 2.0 port C. Channel 1 USB 2.0 DM. |+| 33 | DB1P | bidirectional | Positive differential signal 1 for USB 3.1 port B. |+| 34 | DB1N | bidirectional | Negative differential signal 1 for USB 3.1 port B. |+| 35 | DA1P | bidirectional | Positive differential signal 1 for USB 3.1 port A. |+| 36 | DA1N | bidirectional | Negative differential signal 1 for USB 3.1 port A. |+| 37 | EN2 | input | Enable pin, active low. Internal 2 MOhm pull-up resistor. When high, device is in shutdown/power-down. |+| 38 | SEL2 | input | Select pin. Along with SEL1 selects which of the 4 differential channels is routed to COM. Internal 2 MOhm pull-down resistor. |+| 39 | VCC | power_in | Positive supply voltage. Operating range 1.8V to 4.5V (typical 3V). |+| 40 | GND | power_in | Power ground reference. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Full Way |+| Package | QFN-40L-EP(5x5) |+| Category | Interface |+| Pins | 40 |++## Ordering variants++- `FSW6820YQFN40G/TR`++## CAD (KiCad official)++- Symbol: `FSW6820YQFN40G`+- Footprint: `Package_DFN_QFN:QFN-40-1EP_5x5mm_P0.4mm_EP3.6x3.6mm`+- 3D model: QFN-40L-EP(5x5) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Full Way datasheet](docs/fsw6820yqfn40g-datasheet.pdf) (12 pp, sha256 `49d9fe9fd81f9432`, retrieved 2026-08-17, tier: lcsc)+- **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).++[Datasheet PDF](docs/fsw6820yqfn40g-datasheet.pdf)
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