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. 173-0300
Mfr. Part No.RTL8201CP-VD-LF
BrandWIZnet Inc
$2.156
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
$3.74
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. 682-7435
Mfr. Part No.WG82574L S LBA9
BrandIntel
$12.97
Each
units
- - - - 1000Mbit/s - - Surface Mount QFN 64 - - 3.3 V 9 x 9 x 0.85mm
RS Stock No. 170-0733
Mfr. Part No.W5100
BrandWIZnet Inc
$6.50
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. 419-930
Mfr. Part No.W5100
BrandWIZnet Inc
$7.75
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. 698-8987
Mfr. Part No.ENC28J60-I/SO
BrandMicrochip
$3.93
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. 858-0633
Mfr. Part No.LTC4266IUHF#PBF
$19.58
Each
units
IEEE802.3 I2C - - - - IEEE 802.3af Surface Mount QFN 38 - - 3.3 V 7 x 5 x 0.7mm
RS Stock No. 155-9351
Mfr. Part No.LTC4266IUHF#PBF
$13.246
Each (In a Tube of 52)
units
IEEE802.3 I2C - - - - IEEE 802.3af Surface Mount QFN 38 - - 3.3 V 7 x 5 x 0.7mm
RS Stock No. 178-4863
Mfr. Part No.ENC28J60-I/SO
BrandMicrochip
$3.91
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. 912-2941
Mfr. Part No.ENC28J60-I/SS
BrandMicrochip
$3.475
Each (In a Tube of 47)
units
10BaseT Serial-SPI MII, MIIM Full Duplex, Half Duplex 10Mbps Internal IEEE 802.3 Surface Mount SSOP 28 - Yes 3.3 V 10.5 x 5.6 x 1.85mm
RS Stock No. 758-1048
Mfr. Part No.W5200
BrandWIZnet Inc
$7.17
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
RS Stock No. 178-4846
Mfr. Part No.ENC28J60-I/SP
BrandMicrochip
$4.50
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. 698-8981
Mfr. Part No.ENC28J60-I/SP
BrandMicrochip
$4.48
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. 170-0900
Mfr. Part No.W5200
BrandWIZnet Inc
$7.957
Each (On a Reel of 2000)
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
RS Stock No. 770-7755
Mfr. Part No.ENC28J60-I/SS
BrandMicrochip
$4.21
Each (In a Pack of 2)
units
10BaseT Serial-SPI MII, MIIM Full Duplex, Half Duplex 10Mbps Internal IEEE 802.3 Surface Mount SSOP 28 - Yes 3.3 V 10.5 x 5.6 x 1.85mm
RS Stock No. 682-7438
Mfr. Part No.WG82574IT S LBAC
BrandIntel
$12.04
Each
units
1000BaseT, 100BaseTX, 10BaseT PCI GMII, MII, RMII Full Duplex, Half Duplex 10 Mbps, 100 Mbps, 1000 Mbps Internal IEEE 802.3ab Surface Mount PQFP 64 Yes Yes 1.05 V, 1.9 V, 3.3 V 9 x 9 x 2.55mm
RS Stock No. 154-7661
Mfr. Part No.LTC4267IDHC-3#PBF
$6.382
Each (In a Tube of 73)
units
PoE RJ45 PD Interface - - - IEEE 802.3af Surface Mount DFN 16 - - -57 V 5 x 3 x 0.7mm
RS Stock No. 162-7567
Mfr. Part No.TPS2375PW
$2.93
Each (In a Tube of 150)
units
- - - - - - - Surface Mount TSSOP 8 - - - 3 x 4.4 x 1.15mm
RS Stock No. 155-9321
Mfr. Part No.LTC4265IDE#PBF
$5.166
Each (In a Tube of 91)
units
PoE-Base - PD Interface - - - IEEE 802.3 Surface Mount DFN 12 - - 60 (Max.) V 4 x 3 x 0.7mm
RS Stock No. 761-9563
Mfr. Part No.LTC4267IDHC-3#PBF
$9.62
Each
units
PoE RJ45 PD Interface - - - IEEE 802.3af Surface Mount DFN 16 - - -57 V 5 x 3 x 0.7mm
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