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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Beskrivning Pris Number of I/O Channels Interface Number of Pins Package Type Clock Frequency Mounting Type Maximum Supply Voltage Minimum Supply Voltage
RS-artikelnummer 887-7381
Tillv. art.nrMCP23S17-E/SO
VarumärkeMicrochip
9,75 kr
Each (In a Tube of 27)
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16 Serial-SPI 28 SOIC 5MHz Surface Mount - -
RS-artikelnummer 403-894
Tillv. art.nrMCP23S17-E/SO
VarumärkeMicrochip
11,664 kr
Each (In a Pack of 5)
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16 Serial-SPI 28 SOIC 5MHz Surface Mount - -
RS-artikelnummer 165-4752
Tillv. art.nrMCP23008-E/P
VarumärkeMicrochip
8,446 kr
Each (In a Tube of 25)
Enheter
8 I2C, Serial MHz 18 PDIP 5MHz Through Hole - -
RS-artikelnummer 403-563
Tillv. art.nrMCP23008-E/P
VarumärkeMicrochip
8,748 kr
Each (In a Pack of 5)
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8 I2C, Serial MHz 18 PDIP 5MHz Through Hole - -
RS-artikelnummer 819-5579
Tillv. art.nrMCP23S18T-E/MJ
VarumärkeMicrochip
11,239 kr
Each (On a Reel of 3300)
Enheter
16 Serial-SPI 24 QFN 10MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 669-6455
Tillv. art.nrMCP23018-E/SP
VarumärkeMicrochip
13,214 kr
Each (In a Pack of 5)
Enheter
16 I2C 28 SPDIP 3.4MHz Through Hole - -
RS-artikelnummer 165-2044
Tillv. art.nrMCP23008-E/SS
VarumärkeMicrochip
8,539 kr
Each (In a Tube of 67)
Enheter
8 I2C 20 SSOP 1.7MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 770-9739
Tillv. art.nrMCP23S18-E/MJ
VarumärkeMicrochip
14,89 kr
Each (In a Pack of 3)
Enheter
16 Serial-SPI 24 QFN 10MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 403-806
Tillv. art.nrMCP23017-E/SP
VarumärkeMicrochip
11,146 kr
Each (In a Pack of 5)
Enheter
16 I2C, Serial MHz 28 SPDIP 5MHz Through Hole - -
RS-artikelnummer 144-5723
Tillv. art.nrMCP23017-E/SP
VarumärkeMicrochip
11,147 kr
Each (In a Tube of 15)
Enheter
16 I2C, Serial MHz 28 SPDIP 5MHz Through Hole - -
RS-artikelnummer 178-3989
Tillv. art.nrMCP23S18-E/MJ
VarumärkeMicrochip
12,355 kr
Each (In a Tube of 91)
Enheter
16 Serial-SPI 24 QFN 10MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 770-9707
Tillv. art.nrMCP23008-E/SS
VarumärkeMicrochip
10,216 kr
Each (In a Pack of 5)
Enheter
8 I2C 20 SSOP 1.7MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 145-8960
Tillv. art.nrMCP23018-E/SP
VarumärkeMicrochip
12,594 kr
Each (In a Tube of 15)
Enheter
16 I2C 28 SPDIP 3.4MHz Through Hole - -
RS-artikelnummer 912-6791
Tillv. art.nrMCP23S09-E/MG
VarumärkeMicrochip
9,835 kr
Each (In a Tube of 120)
Enheter
8 Serial-SPI 16 QFN 10MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 177-2849
Tillv. art.nrMCP23S08T-E/SO
VarumärkeMicrochip
8,804 kr
Each (On a Reel of 1100)
Enheter
8 SPI 18 SOIC 10MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 819-5575
Tillv. art.nrMCP23S17T-E/SS
VarumärkeMicrochip
9,284 kr
Each (On a Reel of 2100)
Enheter
16 Serial-SPI 28 SSOP 10MHz Surface Mount 5.5 V 4.5 V
RS-artikelnummer 770-9735
Tillv. art.nrMCP23S17-E/ML
VarumärkeMicrochip
14,027 kr
Each (In a Pack of 3)
Enheter
16 Serial-SPI 28 QFN 10MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 770-9713
Tillv. art.nrMCP23016-I/ML
VarumärkeMicrochip
12,48 kr
Each (In a Pack of 3)
Enheter
16 I2C 28 QFN 400kHz Surface Mount 5.5 V 2 V
RS-artikelnummer 165-4811
Tillv. art.nrMCP23016-I/SP
VarumärkeMicrochip
12,236 kr
Each (In a Tube of 15)
Enheter
16 I2C 28 SPDIP 400MHz Through Hole - -
RS-artikelnummer 159-6630
Tillv. art.nrMCP23018-E/SO
VarumärkeMicrochip
11,657 kr
Each (In a Tube of 27)
Enheter
16 I2C 28 SOIC 3.4MHz Surface Mount - -