CH340N
Manufacturer
Model
CH340N
Category
The CH340N is a cost-effective USB-to-serial converter in SOP-8 package with 2Mbps data rate, supporting 3.3V/5V operation across -20°C to +70°C. Ideal for industrial IoT devices, sensor interfaces, and embedded systems requiring serial communication. Its compact footprint and RoHS compliance make it suitable for mass production, though engineers should manage thermal dissipation and current limits during design.
Reference Pricing
Reference Stock
Specifications
| Conversion Efficiency | N/A |
| Dimensions | 3.9mm x 150mil |
| Electrical Insulation Strength | N/A |
| Interface Compatibility | N/A |
| Operating Frequency | N/A |
| Operating Temperature Range | -20℃ to 70℃ |
| Package Type | SOP-8 |
| Power Consumption | N/A |
| Rated Voltage | 3.1V to 3.6V |
Function And Role
Core Function
USB to serial conversion
Key Characteristics
- SOP-8 package
- 2Mbps data rate
- supports 3.3V/5V supply voltage
- USB 2.0 protocol compliance
- operating temperature range: -20°C to +70°C
Application Domains
Basic Scenarios
- USB-based GPS devices
- industrial sensor interfaces
- low-cost communication modules
Extended Scenarios
- IoT hub integrations
- medical device data acquisition
- embedded system prototyping
Precautions
| Soldering | requires proper SOP-8 reflow soldering (max 250°C) |
| Current Limit | max continuous current: 50mA (per VCC pin) |
| Voltage Limit | absolute max supply voltage: ±12V |
| Thermal Management | average power dissipation: 50mW (keep junction temperature <85°C) |
| Storage | moisture sensitivity level 3 (168-hour humidity test required) |
| Risk Warnings |
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Alternative Model Params
- Number of Channels
- Data Rate
- Supply Voltage
- Protocol
- Operating Temperature
Design Recommendations
| Layout | maintain 10mil trace spacing for signal integrity |
| Thermal | use thermal vias near power pins |
| Compatibility | ensure USB 2.0 host controller support |
| Testing | verify RS232 voltage levels (-12V to +12V) under load |
Market Positioning
| Strengths |
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| Weaknesses |
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Datasheet
Assist inquiry
Distributors
Shenzhen Xinwei Electronic Co., Ltd. (Shenzhen)
Shenzhen Anyi Electronics Co., Ltd.
Huipu Technology (Shenzhen) Co., Ltd.
Shenzhen Chenhao Technology Co., Ltd.
Shenzhen Futian District Lixin Zhou Electronic Merchants (Individual)
Shenzhen Yonghua Xin Technology Co., Ltd.
Shenzhen Weidanna Electronic Co., Ltd.
Shenzhen Junsheng Guanglian Electronic Technology Co., Ltd.
Xilong (Shenzhen) Technology Co., Ltd. (formerly Shenzhen Sunny Technology Co., Ltd.)
Shenzhen Desen Electronic Co., Ltd.
Shenzhen Futian District Yike Electronic Commerce