# WF480RA VX S8T&R

**WF** · RF Transceiver ICs · SOP-8

WF480RA VX S8T&R from WF, in a SOP-8. 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 | GND | power_in | Ground pin. |
| 2 | ANT | input | RF signal input pin. |
| 3 | VDD | power_in | Power supply pin, DC 2.0~5.5V. |
| 4 | CTH | input | Reference signal mode selection for the internal data comparator. |
| 5 | DO | output | Demodulated data signal output. |
| 6 | SHUT | input | Shutdown control: connect to supply for shutdown mode, connect to ground for operating mode. |
| 7 | NC | unconnected | Not connected, leave floating. |
| 8 | REFOSC | input | External crystal connection pin for the reference oscillator. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | WF |
| Package | SOP-8 |
| Category | RF & Radio |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VDD | 2 | 3.3 | 5.5 | V |  | 3 |
| Operating temperature | TA | -40 |  | 125 | ℃ |  | 3 |
| Supply voltage slew rate | θ |  |  | 1 | mV/μs |  | 3 |
| Supply voltage | VDD | -0.3 |  | 5.5 | V |  | 3 |
| Interface voltage | VIN | -0.3 |  | 6 | V | VDD+0.3 V | 3 |
| Junction temperature | TJ | -40 |  | 150 | ℃ |  | 3 |
| Storage temperature | TSTG | -65 |  | 150 | ℃ |  | 3 |
| Soldering temperature | TSDR |  |  | 255 | ℃ | 持续至少 30 秒 | 3 |
| ESD rating HBM | VHBM | -8 |  | 8 | kV | 人体模型(HBM) | 3 |
| Receiver supply voltage | VDD | 2 |  | 5.5 | V |  | 4 |
| Data rate | DR |  |  | 10 | kbps |  | 4 |
| Operating current | IOP |  | 4.98 |  | mA | fRF=315MHz,VDD=3.3V | 4 |
| Operating current | IOP |  | 5.07 |  | mA | fRF=315MHz,VDD=5V | 4 |
| Standby current | ISTBY |  | 0.01 |  | µA | VSHUT=VDD | 4 |
| Receiver sensitivity |  |  | -113 |  | dBm | fRF = 315MHz / 2kbps | 4 |
| Receiver bandwidth | BW |  | 300 |  | kHz | fRF = 315MHz | 4 |
| IF frequency | fIF |  | 0.86 |  | MHz |  | 4 |
| IF bandwidth | fBW |  | 0.43 |  | MHz |  | 4 |
| Saturation input level |  |  | -20 |  | dBm | RSC = 50Ω | 4 |
| Spurious reverse isolation |  |  |  | 30 | µVr/ms | ANT pin, RSC = 50Ω | 4 |
| Reference oscillator input impedance | ZREFOSC |  | 290 |  | kΩ |  | 4 |
| Reference oscillator source current |  |  | 5.2 |  | µA |  | 4 |
| CTH source impedance | ZCTH |  | 145 |  | kΩ |  | 4 |
| CTH leakage current | IZCTH(leak) | -100 |  | 100 | nA | TA = +85°C | 4 |
| Receiver startup time |  |  |  | 4 | ms | 从VDD上电到接收 | 4 |
| SHUT startup time |  |  |  | 3 | ms | 从SHUT引脚拉低到接收 | 4 |
| Crystal accuracy |  | -20 |  | 20 | ppm |  | 5 |
| Crystal load capacitance | CLOAD |  | 15 |  | pF |  | 5 |
| Crystal equivalent resistance | Rm |  |  | 60 | Ω |  | 5 |
| Crystal startup time | tXTAL |  |  | 400 | µs |  | 5 |

## CAD (KiCad official)

- Symbol: `WF480RA VX S8T&R`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `wf480ra-vx-s8t-r-etched.step` / `wf480ra-vx-s8t-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `wf480ra-vx-s8t-r.step` / `wf480ra-vx-s8t-r.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [WF datasheet](docs/wf480ra-vx-s8t-r-datasheet.pdf) (6 pp, sha256 `308b88d70a739aa5`, retrieved 2026-10-22, 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`, primary `claude-sonnet-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/wf480ra-vx-s8t-r-datasheet.pdf)