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. 823-4226
FabrikantnummerPCA9535ECDWR2G
FabrikantON Semiconductor
1,435 €
Each (In a Pack of 10)
Aantal stuks
16 I2C 24 SOIC 1MHz Surface Mount 5.5 V 1.65 V
RS-stocknr. 163-0307
FabrikantnummerPCA9535ECDWR2G
FabrikantON Semiconductor
1,002 €
Each (On a Reel of 1000)
Aantal stuks
16 I2C 24 SOIC 1MHz Surface Mount 5.5 V 1.65 V
RS-stocknr. 862-9249
FabrikantnummerFXL6408UMX
FabrikantON Semiconductor
0,689 €
Each (In a Pack of 10)
Aantal stuks
8 I2C 16 UMLP 400kHz Surface Mount 3.6 V 1.65 V
RS-stocknr. 823-4223
FabrikantnummerPCA9535ECDTR2G
FabrikantON Semiconductor
1,08 €
Each (In a Pack of 10)
Aantal stuks
16 I2C 24 TSSOP 1MHz Surface Mount 5.5 V 1.65 V
RS-stocknr. 121-7978
FabrikantnummerPCA9535ECDTR2G
FabrikantON Semiconductor
0,855 €
Each (On a Reel of 2500)
Aantal stuks
16 I2C 24 TSSOP 1MHz Surface Mount 5.5 V 1.65 V
RS-stocknr. 124-1424
FabrikantnummerFXL6408UMX
FabrikantON Semiconductor
0,303 €
Each (On a Reel of 5000)
Aantal stuks
8 I2C 16 UMLP 400kHz Surface Mount 3.6 V 1.65 V
RS-stocknr. 823-4236
FabrikantnummerPCA9535EMTTXG
FabrikantON Semiconductor
1,499 €
Each (In a Pack of 10)
Aantal stuks
16 I2C 24 QFN 1MHz Surface Mount 5.5 V 1.65 V
RS-stocknr. 163-0308
FabrikantnummerPCA9535EDWR2G
FabrikantON Semiconductor
1,002 €
Each (On a Reel of 1000)
Aantal stuks
16 I2C 24 SOIC 1MHz Surface Mount 5.5 V 1.65 V
RS-stocknr. 789-3975
FabrikantnummerCAT9554YI-GT2
FabrikantON Semiconductor
0,798 €
Each (On a Tape of 5)
Aantal stuks
8 I2C, SMBus 16 TSSOP 400kHz Surface Mount 5.5 V 2.3 V
RS-stocknr. 121-7979
FabrikantnummerPCA9535EMTTXG
FabrikantON Semiconductor
0,855 €
Each (On a Reel of 3000)
Aantal stuks
16 I2C 24 QFN 1MHz Surface Mount 5.5 V 1.65 V
RS-stocknr. 823-4220
FabrikantnummerPCA9535ECMTTXG
FabrikantON Semiconductor
1,392 €
Each (In a Pack of 10)
Aantal stuks
16 I2C 24 QFN 1MHz Surface Mount 5.5 V 1.65 V
RS-stocknr. 124-9971
FabrikantnummerCAT9554YI-GT2
FabrikantON Semiconductor
0,599 €
Each (On a Reel of 2000)
Aantal stuks
8 I2C, SMBus 16 TSSOP 400kHz Surface Mount 5.5 V 2.3 V
RS-stocknr. 823-4232
FabrikantnummerPCA9535EDWR2G
FabrikantON Semiconductor
1,507 €
Each (In a Pack of 10)
Aantal stuks
16 I2C 24 SOIC 1MHz Surface Mount 5.5 V 1.65 V
RS-stocknr. 124-5422
FabrikantnummerPCA9535ECMTTXG
FabrikantON Semiconductor
0,929 €
Each (On a Reel of 3000)
Aantal stuks
16 I2C 24 QFN 1MHz Surface Mount 5.5 V 1.65 V