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 21 - 40 of 213 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. 190-0469
Mfr. Part No.MAX7312ATG+
HK$40.615
Each (In a Pack of 2)
units
16 Serial-2 Wire 24 TQFN 400kHz Surface Mount 5.5 V 2 V
RS Stock No. 799-3160
Mfr. Part No.MAX7312AAG+
HK$39.45
Each (In a Pack of 2)
units
16 Serial-2 Wire 24 SSOP 400kHz Surface Mount 5.5 V 2 V
RS Stock No. 190-0419
Mfr. Part No.MAX7301AAX+
HK$60.825
Each (In a Pack of 2)
units
- - 36 SSOP - Surface Mount - -
RS Stock No. 669-6455
Mfr. Part No.MCP23018-E/SP
BrandMicrochip
HK$14.91
Each (In a Pack of 5)
units
16 I2C 28 SPDIP 3.4MHz Through Hole - -
RS Stock No. 168-5035
Mfr. Part No.TCA9554DBQR
HK$5.45
Each (On a Reel of 2500)
units
8 I2C, Parallel 16 SSOP 100 (Standard) kHz, 400 (Fast) kHz Surface Mount 5.5 V 1.65 V
RS Stock No. 190-6115
Mfr. Part No.MAX7321ATE+
HK$14.91
Each (In a Tube of 100)
units
8 Serial I2C 16 TQFN 400kHz Surface Mount 5.5 V 1.71 V
RS Stock No. 799-3167
Mfr. Part No.MAX7311AWG+
HK$50.495
Each (In a Pack of 2)
units
16 Serial-2 Wire 24 SOIC 400kHz Surface Mount 5.5 V 2 V
RS Stock No. 815-0683
Mfr. Part No.PCA9554DB,112
BrandNXP
HK$14.743
Each (In a Pack of 6)
units
8 I2C, SMBus 16 SSOP 400kHz Surface Mount 5.5 V 2.3 V
RS Stock No. 197-7469
Mfr. Part No.PCF8574N
HK$16.622
Each (In a Pack of 5)
units
8 I2C 16 PDIP 100kHz - - -
RS Stock No. 189-7053
Mfr. Part No.MAX7312ATG+
HK$34.095
Each (In a Tube of 75)
units
16 Serial-2 Wire 24 TQFN 400kHz Surface Mount 5.5 V 2 V
RS Stock No. 177-3372
Mfr. Part No.MCP23S08T-E/SS
BrandMicrochip
HK$10.763
Each (In a Pack of 10)
units
8 SPI 20 SSOP 10MHz Surface Mount 5.5 V 1.8 V
RS Stock No. 124-9971
Mfr. Part No.CAT9554YI-GT2
HK$5.96
Each (On a Reel of 2000)
units
8 I2C, SMBus 16 TSSOP 400kHz Surface Mount 5.5 V 2.3 V
New
RS Stock No. 204-3897
Mfr. Part No.MCP23017-E/ML
BrandMicrochip
HK$13.294
Each (In a Pack of 5)
units
16 I2C 28 QFN 1.7MHz Surface Mount - -
RS Stock No. 190-6111
Mfr. Part No.MAX7311ATG+
HK$37.915
Each (In a Tube of 75)
units
16 Serial I2C 24 TQFN 400kHz Surface Mount 5.5 V 2 V
RS Stock No. 145-6521
Mfr. Part No.PCF8574APW
HK$11.546
Each (In a Tube of 70)
units
- I2C 20 TSSOP - Surface Mount - -
RS Stock No. 661-3374
Mfr. Part No.PCF8574ADWRG4
HK$16.80
Each (In a Pack of 5)
units
- - 16 SOIC - Surface Mount - -
RS Stock No. 168-5033
Mfr. Part No.TCA9538DBR
HK$6.227
Each (On a Reel of 2000)
units
8 I2C, Parallel 16 SSOP 100 (Standard) kHz, 400 (Fast) kHz Surface Mount 5.5 V 1.65 V
RS Stock No. 145-9007
Mfr. Part No.MCP23016-I/SS
BrandMicrochip
HK$13.293
Each (In a Tube of 47)
units
16 I2C 28 SSOP 400kHz Surface Mount 5.5 V 2 V
RS Stock No. 190-7090
Mfr. Part No.MAX7300ATL+
HK$87.07
Each
units
- - - - - - - -
RS Stock No. 823-3523
Mfr. Part No.MCP23S17-E/SP
BrandMicrochip
HK$12.485
Each (In a Pack of 10)
units
16 SPI 28 PDIP 10MHz Through Hole 5.5 V 1.8 V