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
9,555 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
11,994 kr
Each (In a Pack of 5)
Enheter
16 Serial-SPI 28 SOIC 5MHz Surface Mount - -
RS-artikelnummer 165-4752
Tillv. art.nrMCP23008-E/P
VarumärkeMicrochip
7,714 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
9,72 kr
Each (In a Pack of 5)
Enheter
8 I2C, Serial MHz 18 PDIP 5MHz Through Hole - -
RS-artikelnummer 144-5723
Tillv. art.nrMCP23017-E/SP
VarumärkeMicrochip
9,485 kr
Each (In a Tube of 15)
Enheter
16 I2C, Serial MHz 28 SPDIP 5MHz Through Hole - -
RS-artikelnummer 669-6455
Tillv. art.nrMCP23018-E/SP
VarumärkeMicrochip
14,394 kr
Each (In a Pack of 5)
Enheter
16 I2C 28 SPDIP 3.4MHz Through Hole - -
RS-artikelnummer 145-8960
Tillv. art.nrMCP23018-E/SP
VarumärkeMicrochip
12,001 kr
Each (In a Tube of 15)
Enheter
16 I2C 28 SPDIP 3.4MHz Through Hole - -
RS-artikelnummer 770-9707
Tillv. art.nrMCP23008-E/SS
VarumärkeMicrochip
10,444 kr
Each (In a Pack of 5)
Enheter
8 I2C 20 SSOP 1.7MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 178-3989
Tillv. art.nrMCP23S18-E/MJ
VarumärkeMicrochip
12,088 kr
Each (In a Tube of 91)
Enheter
16 Serial-SPI 24 QFN 10MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 819-5579
Tillv. art.nrMCP23S18T-E/MJ
VarumärkeMicrochip
11,055 kr
Each (On a Reel of 3300)
Enheter
16 Serial-SPI 24 QFN 10MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 165-2044
Tillv. art.nrMCP23008-E/SS
VarumärkeMicrochip
8,403 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
15,233 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
11,394 kr
Each (In a Pack of 5)
Enheter
16 I2C, Serial MHz 28 SPDIP 5MHz Through Hole - -
RS-artikelnummer 144-5721
Tillv. art.nrMCP23S08-E/P
VarumärkeMicrochip
6,288 kr
Each (In a Tube of 25)
Enheter
8 SPI 18 PDIP 10MHz Through Hole - -
RS-artikelnummer 770-9713
Tillv. art.nrMCP23016-I/ML
VarumärkeMicrochip
9,637 kr
Each (In a Pack of 3)
Enheter
16 I2C 28 QFN 400kHz Surface Mount 5.5 V 2 V
RS-artikelnummer 912-6791
Tillv. art.nrMCP23S09-E/MG
VarumärkeMicrochip
8,752 kr
Each (In a Tube of 120)
Enheter
8 Serial-SPI 16 QFN 10MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 770-9732
Tillv. art.nrMCP23S09-E/MG
VarumärkeMicrochip
12,118 kr
Each (In a Pack of 5)
Enheter
8 Serial-SPI 16 QFN 10MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 165-2077
Tillv. art.nrMCP23008-E/ML
VarumärkeMicrochip
8,403 kr
Each (In a Tube of 91)
Enheter
8 I2C 20 QFN 1.7MHz Surface Mount 5.5 V 1.8 V
RS-artikelnummer 770-9717
Tillv. art.nrMCP23016-I/SS
VarumärkeMicrochip
16,06 kr
Each (In a Pack of 3)
Enheter
16 I2C 28 SSOP 400kHz Surface Mount 5.5 V 2 V
RS-artikelnummer 669-6458
Tillv. art.nrMCP23016-I/SO
VarumärkeMicrochip
14,994 kr
Each (In a Pack of 5)
Enheter
16 I2C 28 SOIC 1MHz Surface Mount - -