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CH442E
CH442E
| Part Number | CH442E |
|---|---|
| Manufacturer | WCH (Jiangsu Qinheng Microelectronics) |
| Category | Integrated Circuits (ICs) > Interface – Analog Switches, Multiplexers, Demultiplexers |
| Description | Low on-resistance, high-bandwidth dual 2:1 bidirectional analog switch IC, optimized for USB 2.0 signal routing, audio switching, and multi-channel signal multiplexing in a compact MSOP-10 package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The CH442E is a low-power dual 2:1 bidirectional analog switch IC manufactured by WCH. Equivalent to DPDT topology, it supports high-speed digital and analog signal switching. With typical 5Ω on-resistance, it minimizes insertion loss and signal distortion for sensitive transmission lines. It features 550MHz wide bandwidth, fully compatible with USB 2.0 full/high-speed differential signals, analog audio and sensor data. Packaged in mini MSOP-10, it saves PCB space for IoT devices, portable electronics and industrial test equipment.
Core Advantages
Ultra-Low On-Resistance (RON)
Maintains a minimal internal resistance structure, ensuring outstanding signal integrity, negligible signal attenuation, and accurate voltage mapping across both analog and digital channels.
High Bandwidth & Low Crosstalk
Engineered with optimized parasitic capacitance parameters to deliver an extensive operational frequency range, effectively eliminating high-frequency signal coupling and adjacent channel crosstalk.
True Bidirectional Signal Path
Supports fully symmetric, bidirectional data transmission through the independent switch channels, providing ultimate flexibility when configuring multiplexing (MUX) or demultiplexing (DEMUX) layouts.
Space-Saving Form Factor
Packaged in a miniature MSOP-10 outline to significantly reduce PCB real estate requirements, enabling tight, dense placement right next to high-speed microcontrollers and peripheral input ports.
Key Specifications
| Brand | WCH |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free / Eco-Standards Approved |
| EDA/CAD Model | 3D STEP Models, Schematic Symbols, and MSOP-10 footprints available upon request |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | MSOP-10 |
| Mounting Type | Surface Mount Technology (SMD/SMT Reflow Soldering) |
| Surface Marking / Silkscreen | 442E Marking |
| Switch Configuration Architecture | Dual 2-Channel Bidirectional Analog Switch Matrix (Equivalent to DPDT operation) |
| Typical On-Resistance (RON) | 5Ω @ VCC=5V low resistance profile across core operating thresholds |
| -3dB Bandwidth | 550MHz high frequency signal transmission capability |
| Signal Type Compatibility | Optimized for both pure analog signals and high-speed digital logic communication rails |
| Control Input Logic High | Standard CMOS / TTL logic-compatible switching levels for effortless MCU connection |
| Input Logic Level | Logic High ≥2.4V, Logic Low ≤0.8V under 5V power supply |
| Switching Timing | Ton=3ns / Toff=2ns fast turn-on and turn-off propagation timings |
| Channel Crosstalk | -60dB crosstalk suppression at 1MHz frequency |
| Charge Injection | Low charge injection ≤ 1pC to reduce signal distortion |
| Off-State Leakage Current | Ultra-low leakage ≤ 1nA at room temperature |
| Operating Supply Current | Static supply current ≤ 1μA under idle state |
| ESD Protection Rating | 2kV HBM ESD protection for all analog and control signal pins |
| Operating Voltage Scope (VCC) | 4V ~ 5.5V Single Rail Supply (Rated 5V core operation) |
| Operating Temperature Range | -40°C to +85°C (Industrial Grade Operating Temperature) |
Typical Applications
- USB 2.0 Signal Routing Controllers, Dual-USB Port Mutex Triggers, and Type-C Interface Sub-Selection
- Consumer Multimedia Gadgets, Left/Right Audio Channel Switching, and Microphone Routing Arrays
- Industrial MCU Control Panels, Multi-Sensor Data Acquisition Platforms, and ADC Input Multiplexing
- Handheld Smart Diagnostic Terminals, Smart Mobile Hardware, and Compact Wireless IoT Nodes
- Automated Production Test Benches, Communications Switching Frameworks, and Modular Development Boards
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: Is your currently available stock of the CH442E 100% genuine and original?
A: Yes, we guarantee that all CH442E analog switch chips in our warehouse are 100% brand-new, factory-original components directly from WCH. Each production batch undergoes strict incoming quality verification and is packed and dispatched inside secure anti-static protective bags or tubes to safeguard the MSOP leads.
Q2: Can the CH442E be used to multiplex high-speed USB 2.0 data lines reliably?
A: Absolutely. Thanks to its 550MHz operational bandwidth, low parasitic capacitance, and ultra-low 5Ω on-resistance, the CH442E is widely utilized to toggle high-frequency digital signal differential pairs—such as USB 2.0 D+ and D- lines—without distorting the data eye diagram patterns.
Q3: Does this analog switch chip require separate positive and negative power supply rails for audio signals?
A: The CH442E operates from a standard single-rail positive power supply (VCC). For clean, distortion-free audio signal routing, ensure that the peak-to-peak AC voltage of your audio signal stays well within the supply rail boundaries (typically between 0V and VCC), or apply a proper DC bias offset to the audio lines.
Q4: How can our physical engineering group secure the full schematic layout or request tiered volume quotes?
A: Please complete our Quick Inquiry web form found directly on this product page, noting your target quantities and specific project metrics. Our specialized signal interface technical support desk will review your submission and reply with full data assets and custom commercial pricing tables within 24 hours.
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