Ethernet Controllers

Ethernet controllers are an integrated circuit chip that control Ethernet communications. Ethernet is how most computers communicate with each other and is also how most computers connect with the Internet. The internet cable, which plugs into your computer, transfers data to the Ethernet controller, which then decodes the data and puts it into a form your computer can use.
An Ethernet controller determines whether each packet of data is meant for the local computer or another computer on the same network. If the information is meant for the local computer, it decodes that information and relays it to the processor. If the information is meant for another computer on the network, the information is discarded.
Applications
Modern computers have built-in Ethernet controllers on the motherboard. Older computers use a network interface card, which has the Ethernet controller chip on it.

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Description Price Physical Network Type Host Interface Network Interface Communication Mode Data Rate Loopback Mode Standard Supported Mounting Type Package Type Pin Count Auto-Negotiation DMA Support Typical Operating Supply Voltage Dimensions
New
RS Stock No. 187-7745
Mfr. Part No.LAN7431-I/YXX
HK$92.82
Each
units
- - - Full Duplex, Half Duplex 2.5Gbit/s External IEEE 802.3az Surface Mount SQFN 72 Yes Yes 1.8 V, 2.5 V, 3.3 V 10 x 10 x 0.95mm
RS Stock No. 179-3970
Mfr. Part No.MPL360B-I/Y8X
HK$64.695
Each (In a Tray of 250)
units
- - - - - - - Surface Mount TQFP 48 - Yes 3.3 V 7 x 7 x 1.05mm
New
RS Stock No. 187-7715
Mfr. Part No.LAN7430-I/Y9X
HK$75.484
Each (In a Tray of 260)
units
- - - Full Duplex, Half Duplex 2.5Gbit/s External IEEE 802.3az Surface Mount SQFN 48 Yes Yes 1.8 V, 2.5 V, 3.3 V 7 x 7 x 0.95mm
RS Stock No. 177-3534
Mfr. Part No.KSZ8851-16MLLI
HK$33.313
Each (In a Tray of 250)
units
10BaseT, 100BaseTX - 10BaseT, 100BaseTX Full Duplex, Half Duplex 100Mbit/s Internal IEEE 802.3u, IEEE 802.3x Surface Mount LQFP 48 Yes Yes 3.3 V 7.1 x 7.1 x 1.45mm
RS Stock No. 177-3920
Mfr. Part No.LAN7500I-ABZJ
HK$56.77
Each
units
10BaseT, 100BaseTX, 1000BaseT USB 10BaseT, 100BaseTX, 1000BaseT Full Duplex, Half Duplex 1000Mbit/s Internal IEEE 802.3, IEEE 802.3ab, IEEE 802.3u Surface Mount QFN 56 - - 3.3 V 8.15 x 8.15 x 0.95mm
RS Stock No. 177-3551
Mfr. Part No.LAN7500I-ABZJ
HK$42.97
Each (In a Tray of 260)
units
10BaseT, 100BaseTX, 1000BaseT USB 10BaseT, 100BaseTX, 1000BaseT Full Duplex, Half Duplex 1000Mbit/s Internal IEEE 802.3, IEEE 802.3ab, IEEE 802.3u Surface Mount QFN 56 - - 3.3 V 8.15 x 8.15 x 0.95mm
RS Stock No. 177-3997
Mfr. Part No.KSZ8851-16MLLI
HK$38.44
Each (In a Pack of 2)
units
10BaseT, 100BaseTX - 10BaseT, 100BaseTX Full Duplex, Half Duplex 100Mbit/s Internal IEEE 802.3u, IEEE 802.3x Surface Mount LQFP 48 Yes Yes 3.3 V 7.1 x 7.1 x 1.45mm
New
RS Stock No. 187-7742
Mfr. Part No.LAN7430-I/Y9X
HK$102.11
Each
units
- - - Full Duplex, Half Duplex 2.5Gbit/s External IEEE 802.3az Surface Mount SQFN 48 Yes Yes 1.8 V, 2.5 V, 3.3 V 7 x 7 x 0.95mm
RS Stock No. 179-4005
Mfr. Part No.MPL360B-I/Y8X
HK$72.42
Each
units
- - - - - - - Surface Mount TQFP 48 - Yes 3.3 V 7 x 7 x 1.05mm
New
RS Stock No. 187-7717
Mfr. Part No.LAN7431-I/YXX
HK$68.661
Each (In a Tray of 168)
units
- - - Full Duplex, Half Duplex 2.5Gbit/s External IEEE 802.3az Surface Mount SQFN 72 Yes Yes 1.8 V, 2.5 V, 3.3 V 10 x 10 x 0.95mm