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This section provides an overview for io expanders as well as their applications and principles. Also, please take a look at the list of 14 io expander manufacturers and their company rankings. Here are the top-ranked io expander companies as of December, 2024: 1.Semtech, 2.Diodes Incorporated, 3.shengyuic.
Table of Contents
An IO expander is a semiconductor device that functions as a peripheral integrated circuit (IC) for a microcontroller. It is used to increase the number of IO ports available to a microcontroller, which often has a limited number of pin terminals.
This approach allows for cost-effective microcontroller usage in basic products by minimizing pin numbers, while also enabling the same microcontroller to support high-end products through IO expansion. The IO expander thus plays a crucial role in enhancing the system's overall expandability and versatility.
IO expanders are particularly valuable when the built-in IO ports of a microcontroller are insufficient for an upgraded or expanded system functionality. They are used to augment the available IO ports without needing to redesign the entire system. Common applications include controlling a 7-segment LED, which requires numerous control pins, and serving as versatile input/output ports. However, they are generally unsuitable for high-speed IO port switching or data reading due to their typical use of serial buses like the I2C bus.
Controlled via a serial bus such as the I2C bus, IO expanders usually come with 8-bit or 16-bit IO ports. A microcontroller configures these ports as input or output by setting the direction register in the IO expander. Data is then written to or read from the port input/output register. When configured as an output port, the IO expander outputs data from each port; when set as an input port, it can read data from the specified input port.
Additionally, some IO expanders feature an interrupt input terminal. When a pre-set condition is met, an interrupt output is activated, which can be connected to the microcontroller's interrupt input. This feature enables the microcontroller to respond instantly to external events, enhancing system control and responsiveness.
*Including some distributors, etc.
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Microchip Technology Incorporated was incorporated in 1989 and is headquartered in Chandler, Arizona. The company is a developer and manufacturer of control solutions for global markets including the automotive, industrial, communications, human-machine interface, and connectivity industries. The company’s products include microcontrollers, field-programmable gate array products, MOSFET and radio frequency products, and both wired and wireless communications products. The company’s services include wafer foundry and assembly services, test subcontracting manufacturing services, development tools for enabling system designers to program microcontrollers and processors, and timing system products.
Webb-Stiles Company, founded in 1956, is a designer and manufacturer of engineered conveyor systems used in pallet warehouses, truck & heavy equipment, building products, packaging, and automotive industries. The products include assembly lines, converter rollers, and conveyors such as belts & plastic, gravity, live roller, overhead trolley, and vertical conveyors. The company has new products such as stackers, beam accumulators, moving floor conveyors, range live roll, and roller plastic belts. The Valley City, OH, company offers installation, fabrication, and spare parts.
Diodes Incorporated is a supplier for the consumer electronics, computing, communications, industrial, and automotive markets. Diodes Incorporated designs, manufactures, and supplies application-specific standard products in the discrete, logic, analog, and mixed-signal semiconductor markets worldwide. It focuses on low pin count semiconductor devices. Diodes specializes in semiconductor products, such as MOSFET, TVS, and performance Schottky rectifiers, transient voltage suppressors and other devices. It also provides analog products, such as power management devices comprising AC-DC and DC-DC converters, signaling devices, CMOS devices, and analog switches. Diodes Incorporated was incorporated in 1959 and is headquartered in Plano, Texas.
Incorporated in 1965, Analog Devices, Inc. designs, manufactures, tests, and markets integrated circuits (ICs), software, and subsystems that leverage analog, mixed-signal, and digital signal processing technologies. The company provides data converter products, power management and reference products for power conversion, driver monitoring, sequencing, and energy management applications in the automotive, communications, industrial, and high-end consumer markets. In addition, the company provides digital signal processing and system products for high-speed numeric calculations. It serves clients in the industrial, automotive, consumer, instrumentation, aerospace, and communications markets.
RH Systems LLC, founded in 1998 and headquartered in Gilbert, Arizona, United States, is a designer, manufacturer, and supplier of custom temperature and humidity solutions. The company's products include SF6 gas analyzers, humidity generation instrumentation, and robust chilled mirror technology for on-site measurement of humidity, pressure, and purity in SF6 gas-insulated equipment. Its services include calibration, custom calibrations, and repairs for all customers. It primarily serves industries that include metrology and electrical power systems.
Rochester Electronics, LLC is a manufacturer stocking distributor of end-of-life semiconductors and the broadest range of active semiconductors that is headquartered in Newburyport, Massachusetts, and was founded in 1981. The company caters to manufacturing services ranging from design, wafer processing, testing, reliability, and IP Archiving. These specifically include OCM, build-to-order products, process flows, and standard packaging creation. The company pivots on manufacturing and distributing semiconductors that are no longer produced by its original manufacturer.
Isotech North America., founded in the United States in 1994, is a supplier of precision temperature calibration equipment. The company offers a range of data logging solutions for tracking and documenting temperature measurements, devices for simulating RTD and thermocouple outputs for calibration and testing, high-accuracy reference thermometers for precision measurements, precision dry block calibrators for on-site and laboratory temperature calibration, and a range of calibration baths for accurately calibrating temperature sensors and thermometers.
ADLINK Technology Inc., founded in 1995 and headquartered in Taipei, Taiwan, is a manufacturer of products for embedded computing, test and measurement, and automation applications. Their product line includes computer-on-modules, industrial motherboards, data acquisition modules, and complete systems, which are designed to drive data-to-decision applications across industries, improving production capabilities and also increasing operational efficiency. They also offer comprehensive industrial-grade smart panels and also monitors with customization through their one-stop solution service.
Toshiba Electronic Devices & Storage Corporation is a division of Toshiba focusing on providing designs for end-product developers as well as semiconductor and drive equipment for automotive, industrial equipment, green energy, and consumer and personal electronic devices. Toshiba’s storage products include cloud-scale and enterprise-level products, and PC hard drives. Semiconductor products include Si Cower devices, MOSFETs, IGBTs, IEGTs, isolators, solid state relays, power management and intelligent power ICs, diodes, bipolar transistors, microcontrollers, automotive devices, ICs for wireless communication equipment, general purpose logic ICs, radio-frequency devices, sensors, and linear image sensors.
NXP was established in 2006 as a spinoff from Phillips and is headquartered in Eindhoven, Netherlands. The company is a co-founder of NFC communication and designs and manufactures semiconductors that serve the automotive, industrial, mobile, and smart home industries. The company’s automotive products include driver assistance transceivers, sensors, and security systems. For industrial markets, the company produces RFID readers, processors, and microcontrollers. For communication infrastructure, the company produces RF mixers, diodes, and low-noise amplifiers for wireless LAN networks. The company also produces peripherals, power management chips, communications chips, and interface devices.
ST Micro Electronics is a global semiconductor company serving customers with innovations to have a positive impact on people's lives. Their product line is micro electronic systems, such as switches, controllers, sensors and drivers. The main selling point of ST Micro Electronics is its provision of sustainable products, and introducing their electronics to create a more sustainable world. The company, as well as providing the electronic devices, also provides software and support, ensuring that all fields are covered to provide a fully provide a supported and strong relationship with their customer base. ST Micro Electronics believe that technology plays a key role in helping to solve environmental and social challenges, which is why their semiconductor technologies start with their employees, their customers and partners.
Semtech, established in 1960 and headquartered in Camarillo, California, is a semiconductor manufacturer specializing in the catering of solutions for wireless and wired communication, IoT, and sensing applications. The company has over 7,000 employees and operates in more than 20 countries. The company's products are used in several applications, including industrial automation, medical devices, telecommunications, and consumer electronics. Semtech's astute research and development milestones have been recognized through multiple awards and global partnerships reminiscent of their contribution to the advancement of technology.
Texas Instruments Incorporated was founded in 1930 and is headquartered in Dallas, Texas. Texas Instruments is a producer of high tech equipment for industrial, automotive, personal electronics, communications equipment industries. Texas Instruments designs, manufactures, and sells semiconductors to electronics designers and manufacturers in the United States and internationally. Texas Instruments operates in two segments: analog and embedded processing. The Analog segment offers power products, including battery-management solutions, DC/DC switching regulators, power switches, linear regulators, voltage references, and lighting products. The Embedded Processing segment offers microcontrollers that are used in fields such as electronic equipment and digital signal processors for mathematical computations.
Shenzhen Shengyu Electronics Technology Ltd., founded in 2008 and headquartered in Shenzhen, China, is an electric component distributor that is ISO 9001 certified. The company stocks several components, including switches, capacitors, and resistors, which it sources from multiple manufacturers like Seiko Instruments, Inc., Renesas Electronics America, and Nuvoton Technology Corporation America. Depending on the size and configuration of the customer’s components, the company provides a full range of packaging services. It accepts single or multiple-part quotations, and its website allows customers to search hundreds of products ranging from ICs to computer accessories.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Semtech |
13.3%
|
| 2 | Diodes Incorporated |
13.3%
|
| 3 | shengyuic |
6.7%
|
| 4 | Isotech North America |
6.7%
|
| 5 | RH Systems |
6.7%
|
| 6 | Webb-Stiles Company |
6.7%
|
| 7 | Rochester Electronics |
6.7%
|
| 8 | NXP Semiconductors |
6.7%
|
| 9 | Texas Instruments |
6.7%
|
| 10 | ADLINK Technology, Inc. |
6.7%
|
Derivation Method
The ranking is calculated based on the click share within the io expander page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
7 | 70.0% |
|
Taiwan
|
1 | 10.0% |
|
Japan
|
1 | 10.0% |
|
Netherlands
|
1 | 10.0% |
22 products found
22 products
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The USB Expander is a 2x2 channel USB audio interface that expands the USB audio of your CONVERGE Pro2 mixer. Daisy chain with P-Link peripherals s...
