# MS2583

**Hangzhou Ruimeng Tech** · RS-485/RS-422 ICs · SOP-8

MS2583 from Hangzhou Ruimeng Tech, 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 | VCC | power_in | Power supply pin; the datasheet gives a recommended supply range of +2.5 V to +5.5 V and an absolute maximum of +6 V. |
| 2 | RO | output | Receiver output; the absolute maximum output voltage is -0.5 V to +6 V. |
| 3 | DI | input | Driver input; logic high requires at least 2 V and logic low at most 0.8 V. |
| 4 | GND | power_in | Ground reference pin for the device. |
| 5 | Y | output | Bus driver output Y; the absolute maximum driver output voltage is -0.5 V to +6 V. |
| 6 | Z | output | Bus driver output Z; the absolute maximum driver output voltage is -0.5 V to +6 V. |
| 7 | B | input | Bus receiver input B; the bus input voltage range is -7 V to +10 V. |
| 8 | A | input | Bus receiver input A; the bus input voltage range is -7 V to +10 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Hangzhou Ruimeng Tech |
| Package | SOP-8 |
| Category | Communication Interface Chip/UART/485/232 |
| 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 |
|---|---|---|---|---|---|---|---|
| 供电电压 | VCC | -0.5 |  | 6 | V |  | 3 |
| 发送输入电压 | VDI,IN | -0.5 |  | 6 | V |  | 3 |
| 发送输出电压 | VY, VZ | -0.5 |  | 6 | V |  | 3 |
| 接收输入电压 | VA, VB | -7 |  | 10 | V |  | 3 |
| 接收输出电压 | VRO | -0.5 |  | 6 | V |  | 3 |
| 存储温度范围 | TSTORE | -60 |  | 150 | °C |  | 3 |
| 焊接温度 | TSOLDERING |  |  | 260 | °C | 10 秒 | 3 |
| ESD（HBM） |  | -15 |  | 15 | kV | HBM，总线端口对 GND | 3 |
| 电源电压 | VCC | 2.5 |  | 5.5 | V |  | 3 |
| DI 输入电压 | VDI | -0.5 |  |  | V | 最大值为 VCC | 3 |
| A/B 总线输入电压 | VA, VB | -7 |  | 10 | V |  | 3 |
| 工作温度范围 | TA | -40 |  | 125 | °C |  | 3 |
| 无负载差分输出 | VOD1 | 4.7 | 5 |  | V |  | 4 |
| 有负载差分输出 | VOD2 | 2 | 2.6 |  | V | R=50Ω | 4 |
| 输出差模差压变化 | ΔVOD |  |  | 0.2 | V | R=50Ω 或 27Ω | 4 |
| 输出共模点 | VOC | 2.4 | 3 |  | V | R=50Ω 或 27Ω | 4 |
| 输出共模点变化 | ΔVOC |  |  | 0.2 | V | R=50Ω 或 27Ω | 4 |
| 输入高电压 | VIH | 2 |  |  | V | DI 脚 | 4 |
| 输入低电压 | VIL |  |  | 0.8 | V | DI 脚 | 4 |
| 输入电流 | IIN1 | -2 |  | 2 | μA | DI 脚 | 4 |
| A, B 脚输入电流 | IIN2 |  |  | 0.25 | mA | VIN=12V | 4 |
| A, B 脚输入电流 | IIN2 | -0.2 |  |  | mA | VIN=-7V | 4 |
| 接收差分阈值电压 | VTH | -0.2 |  | 0.2 | V | -7V≤VCM≤12V | 4 |
| 接收输入迟滞 | ΔVTH |  |  | 70 | mV | VCM=0 | 4 |
| 接收输出高电平 | VOH | 3.5 | 4.9 |  | V | IO=-4mA, VID=200mV | 4 |
| 接收输出低电平 | VOL |  | 0.03 | 0.4 | V | IO=+4mA, VID=200mV | 4 |
| 接收输入电阻 | RIN | 160 |  |  | kΩ | -7V≤VCM≤12V | 4 |
| 接收端三态（高阻）输出电流 | IOZR | -1 |  | 1 | μA | 0.4V≤VO≤2.4V | 4 |
| 无负载电流 | ICC |  | 300 | 350 | μA |  | 4 |
| 输出短路电流 | IOSD |  | 35 | 250 | mA | Y、Z 短路 | 4 |
| 接收短路电流 | IOSR |  | 7 | 200 | mA | 0V≤VO≤VCC | 4 |
| 驱动输入到输出延时 | tPLH | 16 |  | 20 | ns | RDIFF= 54Ω, CLA=CLB=100pF | 4 |
| 驱动输出电平变化时间差 | tSKEW |  |  | 4 | ns | RDIFF= 54Ω, CLA=CLB=100pF | 4 |
| 驱动输出上升沿和下降沿时间 | tR, tF | 8 |  | 30 | ns | RDIFF= 54Ω, CLA=CLB=100pF | 4 |
| 接收输入到输出延时 | tPLH |  |  | 40 | ns | RDIFF= 54Ω, CLA=CLB=100pF | 4 |
| 接收输入到输出延时 | tPHL |  |  | 38 | ns | RDIFF= 54Ω, CLA=CLB=100pF | 4 |
| 接收输入延时偏差 | tSKD |  |  | 2 | ns | RDIFF= 54Ω, CL1=CL2=100pF | 4 |
| 最大传输速率 | fMAX |  |  | 5 | Mbps | tPLH, tPHL<50%数据周期 | 4 |

## CAD (KiCad official)

- Symbol: `MS2583`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `ms2583-etched.step` / `ms2583-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ms2583.step` / `ms2583.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Hangzhou Ruimeng Tech datasheet](docs/ms2583-datasheet.pdf) (12 pp, sha256 `7f75c689507b2acb`, retrieved 2026-10-27, 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-haiku-5-5` (text), consensus `off` (skipped (clean text read)), 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/ms2583-datasheet.pdf)