component
WS3471EEUA
Public Made by Adomby adom
GEC RS-485 / RS-422 ICs, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownWS3471EEUA
GEC · RS-485 / RS-422 ICs · MSOP-8
WS3471EEUA from GEC, in a MSOP-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 | RO | output | Receiver output: when the receiver is enabled, RO goes high if V(A)-V(B) > -50 mV and low if V(A)-V(B) < -450 mV. |
| 2 | RE | input | Receiver output enable, active low: RO is valid when RE is low and the receiver is disabled when RE is high; with RE high and DE low the whole chip is in shutdown. |
| 3 | DE | input | Driver output enable: driver is enabled when DE is high and disabled with outputs in high-impedance when DE is low; with RE high and DE low the whole chip is in shutdown. |
| 4 | DI | input | Driver input: a low level forces the non-inverting output low and the inverting output high, and a high level forces the non-inverting output high and the inverting output low. |
| 5 | GND | power_in | Ground reference for the device. |
| 6 | A | bidirectional | RS-485/RS-422 bus interface: driver non-inverting output and receiver non-inverting input; rated for bus common-mode range of -7 V to +12 V. |
| 7 | B | bidirectional | RS-485/RS-422 bus interface: driver inverting output and receiver inverting input; rated for bus common-mode range of -7 V to +12 V. |
| 8 | VCC | power_in | Positive supply, recommended 2.5 V to 5.5 V (Table 6), to be bypassed to GND with a 0.1 µF capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | GEC |
| Package | MSOP-8 |
| Category | Interface |
| 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 |
|---|---|---|---|---|---|---|---|
| 差分驱动输出 | VOD2 | 1.5 | 伏 | 图 1,R=750Ω(RS-422) | 2 | ||
| 差分驱动输出 | VOD2 | 0.8 | 1.3 | 伏 | 图 1,R=27Ω(RS-485) | 2 | |
| 差分驱动输出 | VOD2 | 1.5 | 2.2 | 伏 | 图 1,R=27Ω(RS-485) VCC=5V | 2 | |
| 差分输出幅值变化 | ΔVOD | 0.2 | 伏 | 图 1, R=750Ω or R=27Ω | 2 | ||
| 驱动器输出共模电平 | VOC | 0 | 伏 | 图 1, R=750Ω or R=27Ω | 2 | ||
| 驱动器输出共模电平变化 | ΔVOC | 0.2 | 伏 | 图 1, R=750Ω or R=27Ω | 2 | ||
| 输入电流 | IIN1 | -2 | 2 | 微安 | 注 2 | 2 | |
| 输入电流(A 与 B) | IIN4 | 105 | 微安 | DE = GND, VCC=GND or 5.5V, VIN=12V | 2 | ||
| 输入电流(A 与 B) | IIN4 | -75 | 微安 | DE = GND, VCC=GND or 5.5V, VIN=-7V | 2 | ||
| 驱动器输出短路电流 | IOD1 | -60 | 60 | 毫安 | -7V≤VOUT≤12V, VCC<3.6V | 2 | |
| 驱动器输出短路电流 | IOD1 | -130 | 130 | 毫安 | -7V≤VOUT≤12V, VCC<5.5V | 2 | |
| 接收器差分输入阈值电压 | VTH | -450 | -250 | -50 | 毫伏 | -7V≤VCM≤+12V | 2 |
| 接收器输出低电平 | VOL | 0 | 0.4 | 伏 | IO=4mA,VID=-1V | 2 | |
| 接收器输出高阻态漏电流 | IOZR | -1 | 1 | 微安 | 0V≤VO≤VCC | 2 | |
| 接收器输出短路电流 | IOSR | -20 | 50 | 毫安 | 0V≤VRO≤VCC, VCC<3.6V | 3 | |
| 接收器输出短路电流 | IOSR | -40 | 110 | 毫安 | 0V≤VRO≤VCC, VCC<5.5V | 3 | |
| 静态供电电流 | ICC | 40 | 60 | 微安 | VCC<3.6V Noload, DI=GND or Vcc, RE =DE=VCC | 3 | |
| 静态供电电流 | ICC | 1.6 | 2 | 微安 | VCC<3.6V Noload, RE =DE=GND | 3 | |
| 静态供电电流 | ICC | 60 | 100 | 微安 | VCC<5.5V Noload, DI=GND or Vcc, RE =DE=VCC | 3 | |
| 静态供电电流 | ICC | 2.8 | 4 | 微安 | VCC<5.5V Noload, RE =DE=GND | 3 | |
| 静电保护(A管脚,B管脚) 接触放电模型 | -12 | 12 | 千伏 | IEC 61000-4-2 接触放电模型 | 3 | ||
| 静电保护(A管脚,B管脚) 人体模型 | -15 | 15 | 千伏 | 人体模型 | 3 | ||
| 静电保护(其他管脚) | -4 | 4 | 千伏 | 人体模型 | 3 | ||
| 驱动器输入输出延时 tDPLH | tDPLH | 0.85 | 2 | 微秒 | 图 3 和 5, RDIFF=1.5K 欧姆, CL=54pF | 3 | |
| 驱动器输入输出延时 tDPHL | tDPHL | 0.85 | 2 | 微秒 | 图 3 和 5, RDIFF=1.5K 欧姆, CL=54pF | 3 | |
| 驱动器输入输出延时之差 | tDSKEW | 50 | 纳秒 | 图 3 和 5,RDIFF=1.5K 欧姆，CL1=CL2=100pF | 3 | ||
| 驱动器上升、下降时间 | tDR, tDF | 0.75 | 1.2 | 1.75 | 微秒 | 图 3 和 5, RDIFF=1.5K 欧姆，CL1=CL2=100pF | 3 |
| 最大速率 | fMAX | 64 | kbps | 3 | |||
| 驱动器使能到输出为高电平 | tDZH | 0.35 | 6 | 微秒 | 图 4 和 6,CL=100pF,S2 关断 | 3 | |
| 驱动器使能到输出为低电平 | tDZL | 0.4 | 4 | 微秒 | 图 4 和 6,CL=100pF,S1 关断 | 3 | |
| 驱动器从输出低到关断时间 | tDLZ | 0.3 | 1.5 | 微秒 | 图 4 和 6, CL=15pF,S1 关断 | 3 | |
| 驱动器从输出高到关断时间 | tDHZ | 0.3 | 1.5 | 微秒 | 图 4 和 6, CL=15pF,S2 关断 | 3 | |
| 接收器输入输出延时 | tRPLH, tRPHL | 4 | 12 | 微秒 | 图7和9；/VID/≥2.0V；VID上升下降时间小于15纳秒 | 3 | |
| 接收器输入输出延时之差 | / tRPLH - tRPHL / | 0.5 | 微秒 | 图7和9；/VID/≥2.0V；VID上升下降时间小于15纳秒 | 3 | ||
| 接收器使能到输出高 | tRZH | 20 | 500 | 纳秒 | 图 2 和 8, CL=100pF,S2 关断 | 3 | |
| 接收器从输出高到关断 | tRZL | 20 | 200 | 纳秒 | 图 2 和 8, CL=100pF,S1 关断 | 3 | |
| 接收器从输出低到关断 | tRHZ | 20 | 200 | 纳秒 | 图 2 和 8, CL=100pF,S2 关断 | 3 | |
| 接收器输入阻抗 | RIN | 96 | 千欧姆 | -7V≤VCM≤+12V | 2 | ||
| 接收器差分输入阈值电压迟滞 | ΔVTH | 40 | 毫伏 | 2 | |||
| 输入迟滞 | VHYS | 100 | 毫伏 | DE, DI, RE | 2 | ||
| 最大工作电压 | VCC | 7 | V | 6 | |||
| 逻辑脚电压 | DE, RE, DI, RO | -0.3 | 7 | V | 6 | ||
| 总线脚电压 | A, B | -8 | 13 | V | 6 | ||
| 存储温度 | TSTG | -65 | 150 | ℃ | 6 | ||
| 最高结温 | TJ | 150 | ℃ | 6 | |||
| ESD-HBM | ESD-HBM | 2000 | V | 6 | |||
| 推荐工作电压 | VDD | 2.5 | 5.5 | V | 6 | ||
| 工作温度 | TA | -40 | 125 | ℃ | 6 |
CAD (KiCad official)
- Symbol:
WS3471EEUA - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
ws3471eeua-etched.step/ws3471eeua-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ws3471eeua.step/ws3471eeua.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: GEC datasheet (10 pp, sha256
14fe0c13f69c5a80, retrieved 2026-10-18, 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, 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).