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.


...
Read more Read less

Filters

Viewing 81 - 100 of 217 products
Results per page
Description Price Number of I/O Channels Interface Number of Pins Package Type Clock Frequency Mounting Type Maximum Supply Voltage Minimum Supply Voltage
RS Stock No. 189-7053
Mfr. Part No.MAX7312ATG+
HK$34.007
Each (In a Tube of 75)
units
16 Serial-2 Wire 24 TQFN 400kHz Surface Mount 5.5 V 2 V
RS Stock No. 912-6833
Mfr. Part No.MCP23S17-E/SP
BrandMicrochip
HK$12.485
Each (In a Tube of 15)
units
16 SPI 28 PDIP 10MHz Through Hole 5.5 V 1.8 V
RS Stock No. 770-9723
Mfr. Part No.MCP23S08-E/ML
BrandMicrochip
HK$11.35
Each (In a Pack of 5)
units
8 Serial-SPI 20 QFN 10MHz Surface Mount 5.5 V 1.8 V
RS Stock No. 197-7469
Mfr. Part No.PCF8574N
HK$16.528
Each (In a Pack of 5)
units
8 I2C 16 PDIP 100kHz - - -
New
RS Stock No. 209-7661
Mfr. Part No.MCP23008T-E/SS
BrandMicrochip
HK$10.427
Each (In a Pack of 10)
units
8 I2C, Serial 20 SSOP 1.7MHz - - -
RS Stock No. 103-8077
Mfr. Part No.PCA9554ABS,118
BrandNXP
HK$8.495
Each (On a Reel of 6000)
units
- I2C, SMBus - HVQFN - Surface Mount - -
RS Stock No. 125-4197
Mfr. Part No.CY8C9520A-24PVXI
HK$41.60
Each (In a Pack of 2)
units
20 I2C 28 SSOP 100kHz Surface Mount 5.25 V 3 V
RS Stock No. 190-6108
Mfr. Part No.MAX7301ATL+T
HK$36.656
Each (On a Reel of 2500)
units
28 Serial I2C 40 TQFN - Surface Mount 5.5 V 2.5 V
RS Stock No. 727-5706
Mfr. Part No.PCA9554ABS,118
BrandNXP
HK$14.02
Each (On a Tape of 2)
units
- I2C, SMBus - HVQFN - Surface Mount - -
RS Stock No. 124-2351
Mfr. Part No.PCA9535PW,112
BrandNXP
HK$14.635
Each (In a Tube of 63)
units
16 I2C, SMBus 24 TSSOP 400kHz Surface Mount 5 V, 5.5 V 2.3 V
RS Stock No. 510-857
Mfr. Part No.PCA9535PW,112
BrandNXP
HK$16.674
Each (In a Pack of 5)
units
16 I2C, SMBus 24 TSSOP 400kHz Surface Mount 5 V, 5.5 V 2.3 V
RS Stock No. 190-6110
Mfr. Part No.MAX7311AAG+
HK$40.436
Each (In a Tube of 58)
units
16 Serial I2C 24 SSOP 400kHz Surface Mount 5.5 V 2 V
RS Stock No. 177-2845
Mfr. Part No.MCP23008T-E/SO
BrandMicrochip
HK$7.371
Each (On a Reel of 1100)
units
8 I2C 18 SOIC 10MHz Surface Mount 5.5 V 1.8 V
RS Stock No. 483-7187
Mfr. Part No.PCA9554PW,112
BrandNXP
HK$14.018
Each (In a Pack of 5)
units
- I2C 16 TSSOP - Surface Mount - -
RS Stock No. 189-7059
Mfr. Part No.MAX7318ATG+
HK$34.872
Each (In a Tube of 75)
units
16 Serial-2 Wire 24 QFN 400kHz Surface Mount 5.5 V 2 V
RS Stock No. 920-3371
Mfr. Part No.PCF8574ADW
HK$14.102
Each (In a Tube of 40)
units
- I2C 16 SOIC - Surface Mount - -
RS Stock No. 190-6105
Mfr. Part No.MAX7300AAI+
HK$43.397
Each (In a Tube of 46)
units
20 Serial I2C 28 SSOP 400kHz Surface Mount 5.5 V 2.5 V
RS Stock No. 190-6955
Mfr. Part No.MAX7311AAG+
HK$46.905
Each (In a Pack of 2)
units
- Serial I2C - SSOP - Surface Mount 5.5 V 2 V
RS Stock No. 124-2365
Mfr. Part No.PCF8574TS/3,112
BrandNXP
HK$12.525
Each (In a Tube of 75)
units
8 I2C 20 SSOP 100kHz Surface Mount 6 V 2.5 V
RS Stock No. 770-9701
Mfr. Part No.MCP23009-E/MG
BrandMicrochip
HK$11.266
Each (In a Pack of 5)
units
8 I2C 16 QFN 3.4MHz Surface Mount 5.5 V 1.8 V