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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Omschrijving Prijs Number of I/O Channels Interface Number of Pins Package Type Clock Frequency Mounting Type Maximum Supply Voltage Minimum Supply Voltage
RS-stocknr. 403-806
FabrikantnummerMCP23017-E/SP
FabrikantMicrochip
€ 1,106
Each (In a Pack of 5)
Aantal stuks
16 I2C, Serial MHz 28 SPDIP 5MHz Through Hole - -
RS-stocknr. 144-5723
FabrikantnummerMCP23017-E/SP
FabrikantMicrochip
€ 0,953
Each (In a Tube of 15)
Aantal stuks
16 I2C, Serial MHz 28 SPDIP 5MHz Through Hole - -
RS-stocknr. 920-3374
FabrikantnummerPCF8574AN
€ 1,03
Each (In a Tube of 25)
Aantal stuks
8 I2C, SMBus 16 PDIP 100kHz Through Hole - -
RS-stocknr. 517-0249
FabrikantnummerPCF8574AN
€ 2,21
Each
Aantal stuks
8 I2C, SMBus 16 PDIP 100kHz Through Hole - -
RS-stocknr. 511-068
FabrikantnummerPCA9698DGG,512
FabrikantNXP
€ 4,36
Each
Aantal stuks
40 - 56 TSSOP 1MHz Surface Mount 5.5 V 2.3 V
RS-stocknr. 889-5109
FabrikantnummerMCP23017-E/SO
FabrikantMicrochip
€ 0,902
Each (In a Tube of 27)
Aantal stuks
16 I2C, Serial MHz 28 SOIC 5MHz Surface Mount - -
RS-stocknr. 124-2361
FabrikantnummerPCA9698DGG,512
FabrikantNXP
€ 3,698
Each (In a Tube of 35)
Aantal stuks
40 I2C, SMBus 56 TSSOP 1MHz Surface Mount 5.5 V 2.3 V
RS-stocknr. 403-816
FabrikantnummerMCP23017-E/SO
FabrikantMicrochip
€ 1,106
Each (In a Pack of 5)
Aantal stuks
16 I2C, Serial MHz 28 SOIC 5MHz Surface Mount - -
RS-stocknr. 517-0687
FabrikantnummerPCF8574N
€ 1,416
Each (In a Pack of 5)
Aantal stuks
8 I2C, SMBus 16 PDIP - Through Hole - -
RS-stocknr. 920-3393
FabrikantnummerPCF8574N
€ 1,197
Each (In a Tube of 25)
Aantal stuks
8 I2C, SMBus 16 PDIP - Through Hole - -
RS-stocknr. 403-894
FabrikantnummerMCP23S17-E/SO
FabrikantMicrochip
€ 1,164
Each (In a Pack of 5)
Aantal stuks
16 Serial-SPI 28 SOIC 5MHz Surface Mount - -
RS-stocknr. 889-5323
FabrikantnummerMCP23008-E/SO
FabrikantMicrochip
€ 0,77
Each (In a Tube of 42)
Aantal stuks
8 I2C, Serial MHz 18 SOIC 5MHz Surface Mount - -
RS-stocknr. 510-780
FabrikantnummerPCF8574T/3,512
FabrikantNXP
€ 1,26
Each (In a Pack of 5)
Aantal stuks
8 I2C 16 SOIC 100kHz Surface Mount 5.5 V 2.3 V
RS-stocknr. 889-5128
FabrikantnummerMCP23017-E/SS
FabrikantMicrochip
€ 0,946
Each (In a Tube of 47)
Aantal stuks
16 I2C 28 SSOP 1.7MHz Surface Mount - -
RS-stocknr. 403-642
FabrikantnummerMCP23008-E/SO
FabrikantMicrochip
€ 0,94
Each (In a Pack of 5)
Aantal stuks
8 I2C, Serial MHz 18 SOIC 5MHz Surface Mount - -
RS-stocknr. 770-9707
FabrikantnummerMCP23008-E/SS
FabrikantMicrochip
€ 1,018
Each (In a Pack of 5)
Aantal stuks
8 I2C 20 SSOP 1.7MHz Surface Mount 5.5 V 1.8 V
RS-stocknr. 681-1128
FabrikantnummerMCP23017-E/SS
FabrikantMicrochip
€ 1,16
Each (In a Pack of 2)
Aantal stuks
16 I2C 28 SSOP 1.7MHz Surface Mount - -
RS-stocknr. 887-7381
FabrikantnummerMCP23S17-E/SO
FabrikantMicrochip
€ 0,946
Each (In a Tube of 27)
Aantal stuks
16 Serial-SPI 28 SOIC 5MHz Surface Mount - -
RS-stocknr. 124-2364
FabrikantnummerPCF8574T/3,512
FabrikantNXP
€ 1,07
Each (In a Tube of 48)
Aantal stuks
8 I2C 16 SOIC 100kHz Surface Mount 5.5 V 2.3 V
RS-stocknr. 165-2044
FabrikantnummerMCP23008-E/SS
FabrikantMicrochip
€ 0,836
Each (In a Tube of 67)
Aantal stuks
8 I2C 20 SSOP 1.7MHz Surface Mount 5.5 V 1.8 V
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