Ethernet Interface Chip products
JL2121 sits in the gigabit part of the Ethernet PHY range. Part level specifications are confirmed case by case, so send your host MAC interface, required temperature grade and volume and our engineers will advise on current options before you design it in.
Part number search & selector
The table uses the current English-site product records, published selection fields and part-specific technical-file links.
* Frozen Image and Part Number columns · drag horizontally to review all specifications
| Image | Datasheet | Compare | Downloads |
Series
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Data Rate
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Ports
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MAC Interface
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V（if）
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Copper Port
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Optical Port
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Mode
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Temperature
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Package
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Size
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Sample |
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| Image | Part number | Datasheet | Compare | Downloads | Series | Data Rate | Ports | MAC Interface | V（if） | Copper Port | Optical Port | Mode | Temperature | Package | Size | Sample |
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JL1101BR-NI | SPEC | JL1101 series | 100M | 1 | RMII | 1.8V | 10 Bsae-T | 100 Base-FX | RMII-COP | -40~85℃ | QFN24 | 4*4 mm |
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JL1111BI-NI(EtherCAT) | SPEC | JL1111 series | 100M | 1 | MII | 1.8V | 10 Bsae-T | NA | MII-COP | -40~85℃ | QFN32 | 5*5 mm |
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JL1111B -NE | SPEC | JL1111 series | 100M | 1 | MII | 1.8V | 10 Bsae-T | 100 Base-FX | MII-COP | -40~105℃ | QFN32 | 5*5 mm |
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JL1111B -NI | SPEC | JL1111 series | 100M | 1 | MII | 1.8V | 10 Bsae-T | 100 Base-FX | MII-COP | -40~85℃ | QFN32 | — |
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JL1111B -NC | SPEC | JL1111 series | 100M | 1 | MII | 1.8V | 10 Bsae-T | 100 Base-FX | MII-COP | 0~70℃ | QFN32 | — |
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JL2101C-NC | SPEC | JL2101 series | 1G | 1 | RGMII | 1.8V | 10 Bsae-T | NA | RGMII-COP | 0~70℃ | QFN40 | 5*5 mm |
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JL2101C-NI | SPEC | JL2101 series | 1G | 1 | RGMII | 1.8V | 10 Bsae-T | NA | RGMII-COP | -40~85℃ | QFN40 | 5*5 mm |
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JL2101C-NE | SPEC | JL2101 series | 1G | 1 | RGMII | 1.8V | 10 Bsae-T | NA | RGMII-COP | -40~105℃ | QFN40 | 5*5 mm |
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JL2101DC-NC | SPEC | JL2101 series | 1G | 1 | RGMII | 1.8V | 10 Bsae-T | NA | RGMII-COP | 0~70℃ | QFN40 | 5*5 mm |
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JL2101DC-NI | SPEC | JL2101 series | 1G | 1 | RGMII | 1.8V | 10 Bsae-T | NA | RGMII-COP | -40~85℃ | QFN40 | 5*5 mm |
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JL2201B -NC | SPEC | JL2201 series | 1G | 1 | RGMII | 1.8V | 10 Bsae-T | 1000 Base-X | RGMII-COP | 0~70℃ | QFN48 | 6*6 mm |
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JL2201B -NI | SPEC | JL2201 series | 1G | 1 | RGMII | 1.8V | 10 Bsae-T | 1000 Base-X | RGMII-COP | -40~85℃ | QFN48 | 6*6 mm |
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JL2308-PC | SPEC | JL2308 series | 1G | 8 | QSGMII | NA | 10 Bsae-T | NA | QSGMII-COP | 0~70℃ | LQFP128 | 20*14 mm |
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JL2308-PI | SPEC | JL2308 series | 1G | 8 | QSGMII | NA | 10 Bsae-T | NA | QSGMII-COP | -40~85℃ | LQFP128 | 20*14 mm |
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JL2388-PC | SPEC | JL2388 series | 1G | 8 | QSGMII | NA | 10 Bsae-T | NA | QSGMII-COP | 0~70℃ | LQFP128 | 20*14 mm |
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JL2388-PI | SPEC | JL2388 series | 1G | 8 | QSGMII | NA | 10 Bsae-T | NA | QSGMII-COP | -40~85℃ | LQFP128 | 20*14 mm |
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JL4201-NC | SPEC | JL4201 series | 2.5G | 1 | SGMII | NA | 10 Bsae-T | 2500 Base-X | (H)SGMII-COP | 0~70℃ | QFN48 | 6*6 mm |
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JL4201-NI | SPEC | JL4201 series | 2.5G | 1 | SGMII | NA | 10 Bsae-T | 2500 Base-X | (H)SGMII-COP | -40~85℃ | QFN48 | 6*6 mm |
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Broaden the selected filters or clear the current search.
By series
Series are separated by link speed, port count and the MAC interface they present.
How to select
Selection steps, parameter explanations and the series comparison for Ethernet PHY Devices are on one page. Confirm the series there, then use this list for part numbers, files and samples.
Documents
Datasheets carry the pinout, reference schematic and layout guidance for each series.
Showing representative available file sets. Search to find a specific SKU.
VOOHU’s published product content is reviewed by its engineering team. Specifications, downloads and technical support information are tied to specific part numbers, so you can verify them before requesting samples or a quotation.
FAQ
Answers cover interface choice, fibre support, temperature grades and layout.
Specifications are confirmed per part number at enquiry rather than published as a fixed list here. Send your host MAC interface, required link speed, temperature grade and expected volume, and our engineers will confirm which current options apply before you commit the design.
All three sit in the gigabit part of the range. JL2101 presents RGMII and is copper only; JL2201 presents RGMII with 1000Base-X fibre support. For a direct comparison with JL2121, send your requirement and our engineers will set out the differences that matter to your design.
Confirm availability before committing. For any device where you need long term supply, ask about lifecycle status and lead time at the same time as the technical specification, so the design decision and the supply decision are made together.
The host controller and its MAC interface, the required link speed and port count, whether you need a fibre port, the operating temperature range and your expected annual volume. With those five, our engineers can usually respond with a shortlist immediately.
Send the host MAC interface, required speed, temperature grade, quantity and delivery region. Because part level detail for this series is confirmed at enquiry, a sales engineer will come back with the applicable part numbers before samples are arranged.
Engineer support
Send the candidate part number and the condition you need reviewed. Sample support can be added after the selection is clear; commercial questions may be discussed in the same engineering conversation.
Include the document revision
Temperature, isolation voltage and PoE current basis
Pin count, pitch and spacing between pin rows
To help prioritize samples and evaluation
When you need candidates and a comparison of differences
Engineering review identifies candidate parts and explains the differences.
From the selector or engineering review
Prototyping / pilot build / production
Specify sample and production timing separately
Compliance documents, material declarations or third-party reports
Samples are free of charge. Sample quantity and lead time depend on the part number and project stage. Sales will respond on business days.
