company blog about Long-term Supply and High-Price Buyback of ASMedia ASM1543: 10 Gbps USB-C Mux/Demux Switch

Mingjiada Electronics Offers Long-Term Supply and High-Priced Buyback of ASMedia ASM1543: 10 Gbps USB-C Mux/Demux Switch Specifications and Selection Guide

Product Overview

The ASM1543 is a 4-to-2 differential signal multiplexer/demultiplexer switch with integrated Type-C Configuration Channel (CC) logic, launched by ASMedia (Xiangshuo Technology) and specifically designed for USB 3.1 Type-C interfaces. This chip plays a central role in high-speed signal routing and CC communication management in motherboards, expansion cards, laptops, and embedded platforms, making it an indispensable key component in USB Type-C interface design.

Shenzhen Mingjiada Electronics Co., Ltd. provides a long-term, stable supply of genuine, original ASM1543 chips and also offers high-price buyback services for excess inventory of this model worldwide. Leveraging a coordinated dual-warehouse system in Shenzhen and Hong Kong, the company provides customers with brand-new, original off-the-shelf inventory and one-stop supply chain solutions.

Key Specifications

Manufacturer: ASMedia

Product Model: ASM1543

Product Type: USB Type-C Mux/Demux Switch (with Integrated CC Logic)

Differential Channel Configuration: 4-to-2 Differential Signal Switch

Maximum Data Rate: 10 Gbps SuperSpeedPlus USB

Chip Supply Voltage: 3.3 V

VCONN Supply Voltage: 5 V (for e-mark cables)

Package Type: QFN-32 (4 mm × 4 mm, green package, lead-free)

Environmental Certification: RoHS Compliant

Insertion Loss: -1.78 dB @ 5 GHz

Return Loss: -17.52 dB @ 5 GHz

Off-Channel Isolation: -22.39 dB @ 5 GHz

Crosstalk: -31.6 dB @ 5 GHz

-3 dB Bandwidth: 7.559 GHz

Compliance Standards: USB 3.1 Rev 1.0, USB Type-C Connector and Cable Spec Release 1.3

The above parameters demonstrate that the ASM1543 delivers outstanding RF performance at 5 GHz, with an insertion loss of only -1.78 dB and a -3 dB bandwidth as high as 7.559 GHz, ensuring sufficient signal integrity for 10 Gbps high-speed signals in the switching path.

Detailed Functional Features

The integrated CC Logic control functionality is the core value of the ASM1543. The chip features a built-in CC bus voltage detection circuit, an integrated Ip current source, and an Rd resistor. It can be configured as a DFP (downlink port) or UFP (uplink port) via the strapping pin and supports various Type-C current mode settings. This design eliminates the need for system developers to add a separate CC logic chip or a large number of discrete components.

The USB plug orientation detection feature automatically identifies the insertion direction of Type-C cables, routing high-speed differential signals to the correct channel pairs to achieve true “reversible plugging” support.

Regarding VCONN power supply and protection, the chip’s built-in power switch supports a 5V VCONN supply for power management of e-mark cables and integrates overcurrent protection to ensure power supply safety.

The VBUS power control function enables the enable/disable of the VBUS power supply, facilitating flexible power management solutions for the system.

Typical Application Scenarios

The ASM1543 is widely used in USB Type-C interface designs for motherboards, expansion cards, laptops, and embedded platforms. On the MSI Z370 GODLIKE GAMING motherboard, the ASM1543 serves as the Type-C switch/CC logic chip, working in conjunction with the ASM3142 host controller and signal repeater to implement full USB 3.1 Type-C functionality. In PCIe-to-USB expansion card solutions, the ASM1543 works in conjunction with controllers such as the ASM1142 to enable conversion from PCIe to a 10 Gbps USB Type-C port.

Mingjiada Electronics Supply Services

Mingjiada Electronics maintains a long-term stock of ASM1543, supplying genuine, original products in QFN-32 packaging. With deep expertise in USB interface chips and signal switches, the company provides stable component supply and one-stop order fulfillment support for manufacturers of motherboards, expansion cards, laptops, and embedded devices. Leveraging its dual-warehouse network in Shenzhen and Hong Kong, Mingjiada can quickly respond to customer needs, shorten lead times, and ensure production continuity.

Mingjiada Electronics Recycling Services

Mingjiada Electronics offers high-price recycling services nationwide for the full range of ASMedia USB chips, including the ASM1543. Whether brand-new, original, excess inventory, or project surplus, all items are eligible for evaluation and recycling. The company operates two core businesses—electronic component supply and recycling—combining both procurement and recycling channels. With in-depth knowledge of real-time market conditions in domestic and international semiconductor markets, and leveraging global component distribution channels, we offer purchase quotes aligned with international market rates, free from price pressure caused by middlemen.

Advantages of our recycling services include: cash purchases and flexible settlement terms; cash payment upon confirmation of valuation; support for corporate account settlements; nationwide on-site inspection; on-site inventory counting and on-site valuation for large-volume stock; transaction confidentiality, with formal purchase and sale contracts and non-disclosure agreements; bulk warehouse purchases, where mixed inventory and mixed-model idle stock can be evaluated and purchased as a single lot; and global distribution channels, enabling recycled materials to flow into the global supply chain with strong absorption capacity.

Mingjiada Electronics’ Capabilities

Shenzhen Mingjiada Electronics Co., Ltd. was established in 2004 and is headquartered in the core commercial district of Huaqiangbei, Futian District, Shenzhen. The company operates warehouses and sales outlets in Hong Kong, Shenzhen, and Guangzhou, and is certified under the ISO 9001 Quality Management System. The company boasts a technical team with nearly 20 years of experience in chip identification and is equipped with original-manufacturer-grade testing equipment, such as X-ray inspection systems and XRF spectrometers, enabling accurate evaluation of all types of electronic components. With a inventory of 2 million SKUs, the company specializes in distributing products from over 500 well-known manufacturers and offers professional and competitive pricing for the recycling of obsolete materials.

Frequently Asked Questions

Q1: Which USB standards does the ASM1543 support?

The ASM1543 complies with the USB 3.1 Revision 1.0 and USB Type-C Connector and Cable Specification Release 1.3 standards and supports 10 Gbps SuperSpeedPlus USB bus signals.

Q2: Which models can the ASM1543 replace?

Equivalent alternatives to the ASM1543 include the TI HD3SS3212, Pericom PI3USB30532, Diodes Incorporated PI3USB31532, and NXP PTN5150A, among others.

Q3: What is Mingjiada Electronics’ buyback price for the ASM1543?

Leveraging global component distribution channels and real-time market data, Mingjiada offers buyback quotes aligned with international market rates, with no price markdowns from middlemen. Specific prices are determined through a comprehensive evaluation of factors such as quantity, batch, and packaging condition. Customers can obtain a quick quote by providing a bill of materials.

Q4: How can out-of-town customers collaborate with Mingjiada?

Customers in the Pearl River Delta region can arrange for our professionals to visit on-site to inspect and verify the goods; customers in other regions nationwide can submit a bill of materials and photos of the physical items online. We support cash-on-delivery logistics and purchase electronic components nationwide.

Contact Information

Contact: Mr. Chen / Appraisal Team

Mobile: +86 13410018555

Email: sales@hkmjd.com

Company Address: Rooms 1239–1241, Guoli Building, Zhenzhong Road, Futian District, Shenzhen, Guangdong Province