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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Description Prix Number of I/O Channels Interface Number of Pins Package Type Clock Frequency Mounting Type Maximum Supply Voltage Minimum Supply Voltage
N° de stock RS 403-812
Référence fabricantMCP23S08-E/SO
MarqueMicrochip
1,028 €
Each (In a Pack of 5)
Unité
8 SPI 18 SOIC 10MHz Surface Mount - -
N° de stock RS 814-3990
Référence fabricantTCA9554APWR
0,992 €
Each (In a Pack of 10)
Unité
8 I2C, SMBus 16 TSSOP 400kHz Surface Mount 5.5 V 1.65 V
N° de stock RS 922-3356
Référence fabricantPCF8575CDW
3,231 €
Each (In a Tube of 25)
Unité
- - - - - - - -
N° de stock RS 825-3502
Référence fabricantTCA6416ARTWR
1,35 €
Each (In a Pack of 5)
Unité
16 I2C, Serial 24 WQFN 400kHz Surface Mount 5.5 V 1.65 V
N° de stock RS 168-5033
Référence fabricantTCA9538DBR
0,552 €
Each (On a Reel of 2000)
Unité
8 I2C, Parallel 16 SSOP 100 (Standard) kHz, 400 (Fast) kHz Surface Mount 5.5 V 1.65 V
N° de stock RS 912-6763
Référence fabricantMCP23S18-E/SO
MarqueMicrochip
1,195 €
Each (In a Tube of 27)
Unité
16 SPI 28 SOIC 10MHz Surface Mount - -
N° de stock RS 681-1128
Référence fabricantMCP23017-E/SS
MarqueMicrochip
1,125 €
Each (In a Pack of 2)
Unité
16 I2C 28 SSOP 1.7MHz Surface Mount - -
N° de stock RS 889-5128
Référence fabricantMCP23017-E/SS
MarqueMicrochip
0,943 €
Each (In a Tube of 47)
Unité
16 I2C 28 SSOP 1.7MHz Surface Mount - -
N° de stock RS 661-3475
Référence fabricantPCF8575CDW
3,554 €
Each (In a Pack of 5)
Unité
- - 24 SOIC - Surface Mount - -
N° de stock RS 121-7978
Référence fabricantPCA9535ECDTR2G
0,855 €
Each (On a Reel of 2500)
Unité
16 I2C 24 TSSOP 1MHz Surface Mount 5.5 V 1.65 V
N° de stock RS 124-2351
Référence fabricantPCA9535PW,112
MarqueNXP
1,31 €
Each (In a Tube of 63)
Unité
16 I2C, SMBus 24 TSSOP 400kHz Surface Mount 5 V, 5.5 V 2.3 V
N° de stock RS 162-8708
Référence fabricantTCA6416ARTWR
0,616 €
Each (On a Reel of 3000)
Unité
16 I2C, Serial 24 WQFN 400kHz Surface Mount 5.5 V 1.65 V
N° de stock RS 124-2355
Référence fabricantPCA9555D,112
MarqueNXP
1,41 €
Each (In a Tube of 30)
Unité
16 I2C, SMBus 24 SOIC 400kHz Surface Mount 5.5 V 2.3 V
N° de stock RS 124-2337
Référence fabricantP82B715TD,112
MarqueNXP
2,343 €
Each (In a Tube of 100)
Unité
- I2C, SMBus 8 SOIC 400kHz Surface Mount - -
N° de stock RS 796-8495
Référence fabricantXIO2001IZGU
5,67 €
Each
Unité
16 Serial-2 Wire 169 BGA 66MHz Surface Mount 3.6 V 3 V
N° de stock RS 889-5285
Référence fabricantMCP23S08-E/SO
MarqueMicrochip
0,853 €
Each (In a Tube of 42)
Unité
8 SPI 18 SOIC 10MHz Surface Mount - -
N° de stock RS 124-1424
Référence fabricantFXL6408UMX
0,323 €
Each (On a Reel of 5000)
Unité
8 I2C 16 UMLP 400kHz Surface Mount 3.6 V 1.65 V
N° de stock RS 669-6461
Référence fabricantMCP23S18-E/SO
MarqueMicrochip
1,44 €
Each (In a Pack of 2)
Unité
16 SPI 28 SOIC 10MHz Surface Mount - -
N° de stock RS 133-0706
Référence fabricantTCA9538DBR
1,232 €
Each (In a Pack of 5)
Unité
8 I2C, Parallel 16 SSOP 100 (Standard) kHz, 400 (Fast) kHz Surface Mount 5.5 V 1.65 V
N° de stock RS 162-5476
Référence fabricantPCA9536DR
0,508 €
Each (On a Reel of 2500)
Unité
- - 8 SOIC - Surface Mount - -