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
RS Stock No. 419-930
Mfr. Part No.W5100
BrandWIZnet Inc
£4.39
Each
Units
100BaseTX, 10BaseT SPI MII Full Duplex, Half Duplex 100Mbps Internal IEEE 802.3u Surface Mount LQFP 80 Yes - 3.3 V 10 x 10 x 1.45mm
RS Stock No. 170-0733
Mfr. Part No.W5100
BrandWIZnet Inc
£3.244
Each (In a Tray of 160)
Units
100BaseTX, 10BaseT SPI MII Full Duplex, Half Duplex 100Mbps Internal IEEE 802.3u Surface Mount LQFP 80 Yes - 3.3 V 10 x 10 x 1.45mm
RS Stock No. 173-0300
Mfr. Part No.RTL8201CP-VD-LF
BrandWIZnet Inc
£0.958
Each (In a Tray of 260)
Units
100BaseTX, 10BaseT - MII, SNI Full Duplex, Half Duplex 10 Mbps, 100 Mbps External, Internal IEEE 802.3u Surface Mount LQFP 48 Yes - 3.3 V 7 x 7 x 1.5mm
RS Stock No. 419-952
Mfr. Part No.RTL8201CP-VD-LF
BrandWIZnet Inc
£2.335
Each (In a Pack of 2)
Units
100BaseTX, 10BaseT - MII, SNI Full Duplex, Half Duplex 10 Mbps, 100 Mbps External, Internal IEEE 802.3u Surface Mount LQFP 48 Yes - 3.3 V 7 x 7 x 1.5mm
RS Stock No. 178-4863
Mfr. Part No.ENC28J60-I/SO
BrandMicrochip
£2.173
Each (In a Tube of 27)
Units
10BaseT Serial-SPI SPI Full Duplex, Half Duplex 10 Mbps, 100 Mbps, 1000 Mbps - IEEE 802.3 Surface Mount SOIC 28 - Yes 3.3 V 17.9 x 7.5 x 2.05mm
RS Stock No. 698-8987
Mfr. Part No.ENC28J60-I/SO
BrandMicrochip
£2.35
Each
Units
10BaseT Serial-SPI SPI Full Duplex, Half Duplex 10 Mbps, 100 Mbps, 1000 Mbps - IEEE 802.3 Surface Mount SOIC 28 - Yes 3.3 V 17.9 x 7.5 x 2.05mm
RS Stock No. 178-5356
Mfr. Part No.LAN9252I/ML
BrandMicrochip
£7.151
Each (In a Tray of 260)
Units
100BaseTX, 10BaseT Host Bus MDI, MDIX, MII, RMII Full Duplex, Half Duplex 100Mbps Internal ANSI X3.263, IEEE 802.3, IEEE 802.3u Surface Mount QFN 64 Yes Yes 3.3 (Max.) V 9 x 9 x 0.95mm
RS Stock No. 880-6714
Mfr. Part No.LAN9252I/ML
BrandMicrochip
£9.24
Each
Units
100BaseTX, 10BaseT Host Bus MDI, MDIX, MII, RMII Full Duplex, Half Duplex 100Mbps Internal ANSI X3.263, IEEE 802.3, IEEE 802.3u Surface Mount QFN 64 Yes Yes 3.3 (Max.) V 9 x 9 x 0.95mm
RS Stock No. 889-5446
Mfr. Part No.ENC424J600-I/PT
BrandMicrochip
£2.53
Each (In a Tray of 160)
Units
100BaseTX, 10BaseT Serial-SPI MII, MIIM Full Duplex, Half Duplex 10 Mbps, 100 Mbps Internal IEEE 802.3 Surface Mount TQFP 44 Yes Yes 3.3 V 10 x 10 x 1mm
RS Stock No. 666-5741
Mfr. Part No.ENC424J600-I/PT
BrandMicrochip
£2.98
Each
Units
100BaseTX, 10BaseT Serial-SPI MII, MIIM Full Duplex, Half Duplex 10 Mbps, 100 Mbps Internal IEEE 802.3 Surface Mount TQFP 44 Yes Yes 3.3 V 10 x 10 x 1mm
RS Stock No. 698-8981
Mfr. Part No.ENC28J60-I/SP
BrandMicrochip
£2.52
Each
Units
10BaseT Serial-SPI - Full Duplex, Half Duplex 10 Mbps, 100 Mbps, 1000 Mbps - IEEE 802.3 Through Hole SPDIP 28 - Yes 3.3 V 35.56 x 8.51 x 3.81mm
RS Stock No. 178-4846
Mfr. Part No.ENC28J60-I/SP
BrandMicrochip
£2.437
Each (In a Tube of 15)
Units
10BaseT Serial-SPI - Full Duplex, Half Duplex 10 Mbps, 100 Mbps, 1000 Mbps - IEEE 802.3 Through Hole SPDIP 28 - Yes 3.3 V 35.56 x 8.51 x 3.81mm
RS Stock No. 698-9126
Mfr. Part No.W5300
BrandWIZnet Inc
£4.88
Each
Units
100BaseTX, 10BaseT - MDI/MDIX, MII Full Duplex, Half Duplex 10 Mbps, 100 Mbps - - Surface Mount LQFP 100 Yes Yes 3.3 V 14.1 x 14.1 x 1.4mm
RS Stock No. 173-0305
Mfr. Part No.W5300
BrandWIZnet Inc
£4.439
Each (In a Tray of 90)
Units
100BaseTX, 10BaseT - MDI/MDIX, MII Full Duplex, Half Duplex 10 Mbps, 100 Mbps - - Surface Mount LQFP 100 Yes Yes 3.3 V 14.1 x 14.1 x 1.4mm
RS Stock No. 178-5221
Mfr. Part No.LAN9252I/PT
BrandMicrochip
£7.87
Each (In a Tray of 160)
Units
100BaseTX, 10BaseT Host Bus MDI, MDIX, MII, RMII Full Duplex, Half Duplex 100Mbps Internal ANSI X3.263, IEEE 802.3, IEEE 802.3u Surface Mount TQFP 64 Yes Yes 3.3 (Max.) V 10 x 10 x 1.05mm
RS Stock No. 178-5244
Mfr. Part No.LAN9512-JZX
BrandMicrochip
£3.045
Each (In a Tray of 260)
Units
100BaseTX, 10BaseT - - Full Duplex, Half Duplex 10 Mbps, 100 Mbps - IEEE 802.3u Surface Mount QFN 64 Yes - 3.3 V 9 x 9 x 3.3mm
RS Stock No. 880-6718
Mfr. Part No.LAN9252I/PT
BrandMicrochip
£10.17
Each
Units
100BaseTX, 10BaseT Host Bus MDI, MDIX, MII, RMII Full Duplex, Half Duplex 100Mbps Internal ANSI X3.263, IEEE 802.3, IEEE 802.3u Surface Mount TQFP 64 Yes Yes 3.3 (Max.) V 10 x 10 x 1.05mm
RS Stock No. 716-0449
Mfr. Part No.LAN9512-JZX
BrandMicrochip
£3.93
Each
Units
100BaseTX, 10BaseT - - Full Duplex, Half Duplex 10 Mbps, 100 Mbps - IEEE 802.3u Surface Mount QFN 64 Yes - 3.3 V 9 x 9 x 3.3mm
RS Stock No. 419-978
Mfr. Part No.W3150A+
BrandWIZnet Inc
£3.15
Each
Units
100BaseTX, 10BaseT SPI MII Full Duplex 25Mbps - - Surface Mount LQFP 64 Yes - 3.3 V 10.1 x 10.1 x 1.45mm
RS Stock No. 758-1048
Mfr. Part No.W5200
BrandWIZnet Inc
£3.85
Each
Units
100BaseTX, 10BaseT SPI MDI/MDIX Full Duplex, Half Duplex 10 Mbps, 100 Mbps Internal - Surface Mount QFN 48 Yes - 3.63 V dc 7 x 7 x 0.7mm
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