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 162-5843
Tillv. art.nrPCA9535DW
VarumärkeTexas Instruments
20,85 kr
Each (In a Tube of 25)
Enheter
- - 24 SOIC - Surface Mount - -
RS-artikelnummer 661-3441
Tillv. art.nrPCA9535DW
VarumärkeTexas Instruments
24,486 kr
Each (In a Pack of 5)
Enheter
- - 24 SOIC - 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 887-7381
Tillv. art.nrMCP23S17-E/SO
VarumärkeMicrochip
9,555 kr
Each (In a Tube of 27)
Enheter
16 Serial-SPI 28 SOIC 5MHz Surface Mount - -
RS-artikelnummer 661-3378
Tillv. art.nrPCF8574APWR
VarumärkeTexas Instruments
12,056 kr
Each (In a Pack of 5)
Enheter
- - 20 TSSOP - Surface Mount - -
RS-artikelnummer 517-0261
Tillv. art.nrPCF8574APW
VarumärkeTexas Instruments
13,86 kr
Each
Enheter
- - 20 TSSOP - Surface Mount - -
RS-artikelnummer 145-6521
Tillv. art.nrPCF8574APW
VarumärkeTexas Instruments
11,926 kr
Each (In a Tube of 70)
Enheter
- - 20 TSSOP - Surface Mount - -
RS-artikelnummer 825-3502
Tillv. art.nrTCA6416ARTWR
VarumärkeTexas Instruments
13,96 kr
Each (In a Pack of 5)
Enheter
16 I2C, Serial 24 WQFN 400kHz Surface Mount 5.5 V 1.65 V
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 169-5576
Tillv. art.nrPCF8574APWR
VarumärkeTexas Instruments
5,17 kr
Each (On a Reel of 2000)
Enheter
- - 20 TSSOP - Surface Mount - -
RS-artikelnummer 162-8708
Tillv. art.nrTCA6416ARTWR
VarumärkeTexas Instruments
7,636 kr
Each (On a Reel of 3000)
Enheter
16 I2C, Serial 24 WQFN 400kHz Surface Mount 5.5 V 1.65 V
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 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 517-0687
Tillv. art.nrPCF8574N
VarumärkeTexas Instruments
14,642 kr
Each (In a Pack of 5)
Enheter
8 I2C, SMBus 16 PDIP - Through Hole - -
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 162-8683
Tillv. art.nrPCA9554DW
VarumärkeTexas Instruments
16,748 kr
Each (In a Tube of 40)
Enheter
8 I2C, SMBus 16 SOIC 400kHz Surface Mount 5.5 V 2.3 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 661-3380
Tillv. art.nrPCF8574PWR
VarumärkeTexas Instruments
13,814 kr
Each (In a Pack of 5)
Enheter
- - 20 TSSOP - Surface Mount - -
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 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
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