Link speed
100M, 1G or 2.5G depending on series. All devices also support 10Base-T on the copper side, so legacy links remain available.
イーサネットインターフェースIC製品
JL2308 8 Port Gigabit Ethernet PHY
JL2308 provides eight gigabit ports aggregated to the host over QSGMII, in an LQFP128 package at 14 by 14 millimetres. Confirm the host offers QSGMII and enough bandwidth, then plan the layout for eight pairs and the serial lanes.
型番検索・選定
JL2308 8 Port Gigabit Ethernet PHYの型番を検索
この表では、海外サイトの現行製品データ、公開済みの選定項目、型番別の技術資料リンクを使用しています。
※画像列と型番列は固定されています。横にドラッグしてすべての仕様を確認できます
| 画像 | データシート | 比較 | ダウンロード |
シリーズ
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データレート
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ポート数
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MACインターフェース
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V（if）
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銅線ポート
|
光ポート
|
モード
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温度
|
パッケージ
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サイズ
|
サンプル |
|---|
一致する型番がありません
選択した条件を広げるか、現在の検索条件をクリアしてください。
By series
Ethernet PHY series by speed and ports
Series are separated by link speed, port count and the MAC interface they present.
選定方法
Selecting an Ethernet PHY in four steps
MAC interface first, then speed and ports, then fibre, then temperature and package.
- 01
Start from the MAC interface
Confirm what your host controller provides: RMII, MII, RGMII, SGMII or QSGMII. These are not interchangeable, and the wrong choice cannot be fixed in software.
- 02
Fix speed and port count
100M, 1G or 2.5G, and one port or eight. Eight-port devices aggregate to the host over QSGMII, so confirm the host has that bandwidth.
- 03
Decide on fibre
Some series support 100Base-FX or 1000Base-X, others are copper only. If the design needs a fibre port, check the specific part number rather than the series.
- 04
Pick the temperature grade
Suffixes separate 0 to 70, minus 40 to 85 and minus 40 to 105 degrees. Choose against the enclosure's internal temperature, not the room.
Parameters
Reading Ethernet PHY specifications
The MAC interface and the temperature suffix decide compatibility more than speed does.
Port count
Single port for most series, or eight ports on the JL2308 and JL2388. Eight-port devices need a QSGMII-capable host.
MAC interface
RMII, MII, RGMII, SGMII or QSGMII. This has to match the host controller exactly; no external conversion makes two of them equivalent.
Fibre support
100Base-FX on parts of the 100M range, 1000Base-X on JL2201 and 2500Base-X on JL4201. Several series are copper only, marked NA.
Temperature grade
The suffix carries it: NC for 0 to 70, NI for minus 40 to 85, NE for minus 40 to 105 degrees. Confirm the grade on the exact part number.
パッケージ
From QFN24 at 4 by 4 millimetres up to LQFP128 at 14 by 14. Pin count rises with port count and interface width.
比較
Ethernet PHY series side by side
Speed, port count and MAC interface together define which series fits a design.
選定表に戻る ↑| シリーズ | 型番数 | データレート | ポート数 | MACインターフェース | V（if） | 銅線ポート | 光ポート | モード | 温度 | パッケージ | サイズ | 操作 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| JL1101シリーズ | 1 | 100M | 1 | RMII | 1.8V | 10 Bsae-T | 100 Base-FX | RMII-COP | -40~85℃ | QFN24 | 4*4 mm | 絞り込み → |
| JL1111シリーズ | 4 | 100M | 1 | MII | 1.8V | 10 Bsae-T | NA, 100 Base-FX | MII-COP | 0~70℃, -40~85℃, -40~105℃ | QFN32 | 5*5 mm, 未指定 | 絞り込み → |
| JL2101シリーズ | 5 | 1G | 1 | RGMII | 1.8V | 10 Bsae-T | NA | RGMII-COP | 0~70℃, -40~85℃, -40~105℃ | QFN40 | 5*5 mm | 絞り込み → |
| JL2201シリーズ | 2 | 1G | 1 | RGMII | 1.8V | 10 Bsae-T | 1000 Base-X | RGMII-COP | 0~70℃, -40~85℃ | QFN48 | 6*6 mm | 絞り込み → |
| JL2308シリーズ | 2 | 1G | 8 | QSGMII | NA | 10 Bsae-T | NA | QSGMII-COP | 0~70℃, -40~85℃ | LQFP128 | 20*14 mm | 絞り込み → |
| JL2388シリーズ | 2 | 1G | 8 | QSGMII | NA | 10 Bsae-T | NA | QSGMII-COP | 0~70℃, -40~85℃ | LQFP128 | 20*14 mm | 絞り込み → |
| JL4201シリーズ | 2 | 2.5G | 1 | SGMII | NA | 10 Bsae-T | 2500 Base-X | (H)SGMII-COP | 0~70℃, -40~85℃ | QFN48 | 6*6 mm | 絞り込み → |
用途別確認
Where these Ethernet PHY devices are used
Confirm the host interface, the link speed and the environment the board runs in.
Industrial controllers and gateways
- Confirm the host MAC interface and choose the minus 40 to 85 or minus 40 to 105 grade to suit the cabinet temperature.
EtherCAT and fieldbus devices
- The JL1111 range includes an EtherCAT variant. Confirm the protocol requirement and the MII timing before committing to a part.
Multi-port switch boards
- Eight-port devices aggregate over QSGMII. Verify the host provides QSGMII and that the layout can carry the serial lanes cleanly.
Fibre uplinks and media converters
- Check which specific part number supports 100Base-FX, 1000Base-X or 2500Base-X, then confirm the optical module matches.
Documents
Ethernet PHY datasheets and reference designs
Datasheets carry the pinout, reference schematic and layout guidance for each series.
- 2
- PDFデータシート掲載数
- 0
- 3Dファイル掲載数
- 0
- PCBフットプリント掲載数
VOOHUが公開する製品情報は、エンジニアリングチームが確認しています。仕様、ダウンロード資料、技術サポート情報は型番ごとに紐付けられているため、サンプルや見積もりを依頼する前に確認できます。
カテゴリー概要
Choosing an イーサネットPHY: interface before speed
The most common selection error here is starting from link speed. The MAC interface is the constraint that cannot be worked around.
型番が決まっている場合は、サンプルまたは見積もりを依頼。
The MAC interface decides compatibility
RMII, MII, RGMII, SGMII and QSGMII are different electrical and timing arrangements, not tiers of the same thing. A host that provides RGMII cannot drive an RMII device, and no software setting bridges them. Establish what your controller offers first, because it eliminates most of the range before speed is even considered.
Copper, fibre, or both
Every device here supports copper, including 10Base-T. Fibre is selective: 100Base-FX appears on parts of the 100M range, 1000Base-X on the JL2201 and 2500Base-X on the JL4201. Fibre support is stated per part number rather than per series, so one variant of a series may have it and another may not.
Temperature grade is in the suffix
The letters after the base number carry the rating. NC covers 0 to 70 degrees, NI covers minus 40 to 85, NE covers minus 40 to 105. Select against the temperature inside the enclosure at the highest ambient the product is rated for, not against room temperature.
よくあるご質問
Ethernet PHY questions engineers ask
Answers cover interface choice, fibre support, temperature grades and layout.
How does an eight port PHY connect to the host?
Over QSGMII, a serial interface that carries several links on one pair rather than running eight parallel interfaces. Your host controller must provide QSGMII and enough aggregate bandwidth for eight gigabit links. Confirm both before selecting an eight port device.
What does QSGMII demand from the layout?
Controlled impedance, length matching and a continuous reference plane under the serial lanes. It is a high speed serial link, so it is less forgiving than a parallel interface. Follow the datasheet layout guidance and verify link quality on a prototype board.
How does JL2308 compare with JL2388?
Both are eight port gigabit devices with QSGMII in an LQFP128 package at 14 by 14 millimetres and the same temperature grades. Feature level differences are defined by their respective datasheets, so send your requirement and our engineers will set out which differences apply.
What about magnetics for eight ports?
Each copper port needs its own magnetics, either discrete LAN transformers or RJ45 jacks with integrated magnetics. Plan the board area and the panel arrangement early, and follow the device reference circuit for the centre tap connection on each port.
How do I request samples or a quote?
With a complete part number, send the part number, quantity, delivery region and the date you need it. If you are still selecting, send the host controller, confirmation that it provides QSGMII, the port count and the temperature range.
エンジニアサポート
製品選定後のご相談
候補型番と、確認が必要な条件をお送りください。候補が明確になった後にサンプル支援を追加でき、商取引に関するご質問も同じ技術相談の中でご相談いただけます。
- 1選択した型番
- 2エンジニア確認
- 3サンプル申請
- 4商談
代替品評価をご希望の場合
- 元の型番とデータシート
資料のリビジョンも記載してください
- 動作条件
温度、絶縁電圧、PoE電流の条件
- パッケージ制約
ピン数、ピッチ、ピン列間隔
- プロジェクト段階と年間数量
サンプルと評価の優先度確認に使用します
- 希望確認日
候補と相違点の比較が必要な時期
エンジニア確認により候補型番を選び、相違点をご説明します。
サンプル・見積もりをご希望の場合
- 候補型番
選定表またはエンジニア確認で選んだ型番
- 数量とプロジェクト段階
試作／パイロット生産／量産
- 希望納期
サンプルと量産の時期を分けて記載してください
- 必要資料
適合資料、材料宣言、第三者機関レポートなど
サンプル数量、リードタイム、費用は、プロジェクト段階と型番によって異なります。営業担当者より営業日にご回答します。
