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 483-7222
Référence fabricantPCA9555PW,112
MarqueNXP
1,47 €
Each
Unité
16 I2C, SMBus 24 TSSOP 400kHz Surface Mount 5.5 V 2.3 V
N° de stock RS 510-780
Référence fabricantPCF8574T/3,512
MarqueNXP
1,26 €
Each (In a Pack of 5)
Unité
8 I2C 16 SOIC 100kHz Surface Mount 5.5 V 2.3 V
N° de stock RS 770-9735
Référence fabricantMCP23S17-E/ML
MarqueMicrochip
1,357 €
Each (In a Pack of 3)
Unité
16 Serial-SPI 28 QFN 10MHz Surface Mount 5.5 V 1.8 V
N° de stock RS 661-3488
Référence fabricantPCF8575DW
2,812 €
Each (In a Pack of 5)
Unité
16 I2C, SMBus 24 SOIC 400kHz Surface Mount - -
N° de stock RS 103-8078
Référence fabricantPCA9555BS,118
MarqueNXP
0,814 €
Each (On a Reel of 6000)
Unité
16 I2C, SMBus 24 HVQFN 400kHz Surface Mount - -
N° de stock RS 922-3362
Référence fabricantPCF8575DW
2,555 €
Each (In a Tube of 25)
Unité
- - - - - - - -
N° de stock RS 144-5721
Référence fabricantMCP23S08-E/P
MarqueMicrochip
0,853 €
Each (In a Tube of 25)
Unité
8 SPI 18 PDIP 10MHz Through Hole - -
N° de stock RS 165-2102
Référence fabricantMCP23S17-E/ML
MarqueMicrochip
1,128 €
Each (In a Tube of 61)
Unité
16 Serial-SPI 28 QFN 10MHz Surface Mount 5.5 V 1.8 V
N° de stock RS 124-2364
Référence fabricantPCF8574T/3,512
MarqueNXP
1,07 €
Each (In a Tube of 48)
Unité
8 I2C 16 SOIC 100kHz Surface Mount 5.5 V 2.3 V
N° de stock RS 727-5715
Référence fabricantPCA9555BS,118
MarqueNXP
1,725 €
Each (In a Pack of 2)
Unité
16 I2C, SMBus 24 HVQFN 400kHz Surface Mount 5.5 V 2.3 V
N° de stock RS 403-636
Référence fabricantMCP23S08-E/P
MarqueMicrochip
0,95 €
Each (In a Pack of 5)
Unité
8 SPI 18 PDIP 10MHz Through Hole - -
N° de stock RS 273-539
Référence fabricantP82B715TD,112
MarqueNXP
3,18 €
Each
Unité
- I2C, SMBus 8 SOIC 400kHz Surface Mount - -
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 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 681-1143
Référence fabricantMCP23016-I/SP
MarqueMicrochip
1,29 €
Each (In a Pack of 2)
Unité
16 I2C 28 SPDIP 400MHz Through Hole - -
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 103-8077
Référence fabricantPCA9554ABS,118
MarqueNXP
0,603 €
Each (On a Reel of 6000)
Unité
- - - HVQFN - Surface Mount - -
N° de stock RS 510-857
Référence fabricantPCA9535PW,112
MarqueNXP
1,55 €
Each (In a Pack of 5)
Unité
16 - 24 TSSOP 400kHz Surface Mount 5 V, 5.5 V 2.3 V
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 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