I/O Expanders

I/O expandersare a type of computer hardware that allows more than one device to connect to a single port on a computer.

How do I/O expanders work?

The expander connects to a single spot, but has multiple connections for other devices. Such expanders offer the advantage of allowing more devices of a particular port type to be used at the same time. This commonly used with USBs and ethernet ports.

Types of I/O expanders

There are two main types of I/O expanders: internal and external.

Internal expanders

These have a connection inside the computer, typically on the motherboard, and the only part the user can see is the expansion plate which houses the ports to which they can connect more devices.

External expanders

An external expander plugs into an existing port introducing multiple new places to connect. When not part of a computer system, these devices are commonly known as splitters.

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detalji proizvoda Proizvođač Number of I/O Channels Interface Number of Pins Package Type Clock Frequency Mounting Type Maximum Supply Voltage Minimum Supply Voltage
Cypress Semiconductor, CY8C9520A-24PVXI Cypress Semiconductor - - - - - - - -
Cypress Semiconductor, CY8C9540A-24PVXI Cypress Semiconductor - - - - - - - -
Microchip Technology MCP23S08T-E/SS, 8-Channel I/O Expander 10MHz, SPI, 20-Pin SSOP Microchip Technology 8 SPI 20 SSOP 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23017T-E/ML, 16-Channel I/O Expander 10MHz, I2C, 28-Pin QFN Microchip Technology 16 I2C 28 QFN 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23008T-E/SO, 8-Channel I/O Expander 10MHz, I2C, 18-Pin SOIC Microchip Technology 8 I2C 18 SOIC 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23S17T-E/ML, 16-Channel I/O Expander 10MHz, SPI, 28-Pin QFN Microchip Technology 16 SPI 28 QFN 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23S08T-E/SO, 8-Channel I/O Expander 10MHz, SPI, 18-Pin SOIC Microchip Technology 8 SPI 18 SOIC 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23017T-E/SO, 16-Channel I/O Expander 10MHz, I2C, 28-Pin SOIC Microchip Technology 16 I2C 28 SOIC 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23S17T-E/SO, 16-Channel I/O Expander 10MHz, SPI, 28-Pin SOIC Microchip Technology 16 SPI 28 SOIC 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23017T-E/SS, 16-Channel I/O Expander 10MHz, I2C, 28-Pin SSOP Microchip Technology 16 I2C 28 SSOP 10MHz Surface Mount 5.5 V 1.8 V
Microchip MCP23S18-E/MJ, 16-Channel I/O Expander 10MHz, Serial-SPI, 24-Pin QFN Microchip 16 Serial-SPI 24 QFN 10MHz Surface Mount 5.5 V 1.8 V
Microchip MCP23S18-E/SP I/O Expander, 28-Pin SPDIP Microchip - - 28 SPDIP - Through Hole - -
Microchip Technology MCP23008T-E/SO, 8-Channel I/O Expander 10MHz, I2C, 18-Pin SOIC Microchip Technology 8 I2C 18 SOIC 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23017T-E/ML, 16-Channel I/O Expander 10MHz, I2C, 28-Pin QFN Microchip Technology 16 I2C 28 QFN 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23017T-E/SO, 16-Channel I/O Expander 10MHz, I2C, 28-Pin SOIC Microchip Technology 16 I2C 28 SOIC 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23017T-E/SS, 16-Channel I/O Expander 10MHz, I2C, 28-Pin SSOP Microchip Technology 16 I2C 28 SSOP 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23S08T-E/SO, 8-Channel I/O Expander 10MHz, SPI, 18-Pin SOIC Microchip Technology 8 SPI 18 SOIC 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23S08T-E/SS, 8-Channel I/O Expander 10MHz, SPI, 20-Pin SSOP Microchip Technology 8 SPI 20 SSOP 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23S17T-E/ML, 16-Channel I/O Expander 10MHz, SPI, 28-Pin QFN Microchip Technology 16 SPI 28 QFN 10MHz Surface Mount 5.5 V 1.8 V
Microchip Technology MCP23S17T-E/SO, 16-Channel I/O Expander 10MHz, SPI, 28-Pin SOIC Microchip Technology 16 SPI 28 SOIC 10MHz Surface Mount 5.5 V 1.8 V
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