DS15BR400TVS/NOPB - 4-Ch LVDS Buffer 2Gbps TQFP-48 | Texas Instruments
部品番号: DS15BR400TVS/NOPB ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
DS15BR400TVS/NOPB 概要
An LVDS buffer/repeater is a signal-conditioning interface IC that sits in the middle of a high-speed differential data path. It receives degraded low-voltage differential signaling (LVDS) or Bus LVDS waveforms, regenerates clean logic levels, and re-transmits them, restoring signal integrity over lossy media. In the system hierarchy, it belongs to the signal buffer/repeater class of interface ICs, bridging serializers, deserializers, and backplanes in high-speed digital systems.
Key differentiating features include pre-emphasis that overcomes intersymbol interference (ISI) jitter effects from lossy backplanes and cables, a flow-through pinout that simplifies board layout and minimizes internal device jitter, and compatibility with LVDS and Bus LVDS signal levels such as those used by TI 10-, 16-, and 18-bit serializers and deserializers (SerDes).
Architecturally, the DS15BR400 uses high-speed differential input buffers followed by output drivers with selectable pre-emphasis, keeping the internal data path short and symmetric. This low-jitter design preserves eye opening at 2 Gbps, which is critical for bit-error-rate targets in multi-gigabit links. The NOPB suffix denotes a lead-free, RoHS-compliant finish.
Typical applications include rack-card backplane interconnects, point-to-point cable driver and receiver links, chassis-to-chassis high-speed data distribution, and buffering of SerDes links in industrial, medical imaging, and telecom equipment where signals must traverse long lossy traces or cables.
A key design consideration: pre-emphasis increases output swing and therefore power dissipation, so apply only the level needed for the channel loss; excessive pre-emphasis can degrade signal margin at the far end. Verify supply decoupling with low-ESR ceramics close to each VCC pin.
This page synthesizes verified distributor data, drop-in alternative analysis, pricing tiers, and practical engineering design notes not found in the manufacturer datasheet.
ドロップイン代替品: DS15BR400TVS/NOPB — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: DS15BR400TVS/NOPB （同一形状・フットプリント） — 相違点: Input Interface, Package, Pinout Style, Pre-Emphasis, Supply Current.
クイック比較ツール — 並列比較する代替部品を選択:
DS15BR401TVS/NOPB
✅ ドロップイン📋 参考代替品（カタログ未掲載）
DS15BR400TVS/NOPB
✅ ドロップイン✓ 在庫あり
価格はお問い合わせください
データシートを見る →DS15BR400TVS/NOPB 仕様
| 機能 | 4-Channel LVDS Buffer/Repeater with Pre-Emphasis |
| Number of Channels | 4 |
| Maximum Data Rate | 2 Gbps |
| Input Interface | LVDS, Bus LVDS |
| Supply Voltage Range | 3 V to 3.6 V |
| 電源電流 | 215 mA |
| Pre-Emphasis | Yes (overcomes ISI jitter from lossy backplanes and cables) |
| Pinout Style | Flow-through (minimizes internal device jitter) |
| Jitter Performance | Low-jitter high-speed data path design |
| パッケージ | 48-pin TQFP (PFB), 7 x 7 mm |
| 実装タイプ | Surface Mount |
| Packaging Quantity | 250 per Tray |
| Lead Finish | Lead-free (NOPB / no Pb) |
| RoHS ステータス | Compliant |
| Typical Application | Backplane, cable driver, point-to-point LVDS links |
DS15BR400TVS/NOPB 48-pin tqfp (pfb), 7 x 7 mm ピン配置ガイド
DS15BR400TVS/NOPB (48-pin tqfp (pfb), 7 x 7 mm パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: DS15BR400TVS/NOPB.
詳細は データシート をご参照ください。
主な用途
DS15BR400TVS/NOPB の用途: 6 件s: Rack-Card Backplane Interconnect, Point-to-Point Cable Driver and Receiver Links, SerDes Link Buffering in Imaging Systems, Telecom and Datacom Line Card Fan-Out, Industrial Automation Backplane Extension, Test and Measurement High-Speed Signal Distribution.
Rack-Card Backplane Interconnect
In rack-card systems, line cards connect to a central backplane through long, heavily loaded differential traces that attenuate LVDS swing and close the receive eye. The DS15BR400TVS/NOPB fits this application because its 2 Gbps per channel rate matches common SerDes line rates and its pre-emphasis overcomes ISI jitter from the lossy backplane medium, per the TI datasheet. Placed at the backplane connector, it regenerates four LVDS pairs in one device, operating from the standard 3.3 V rail at 215 mA. The flow-through pinout lets pairs enter one edge and exit the other without layer changes, minimizing skew. Verify pre-emphasis setting against actual trace loss to avoid over-drive at short spans.
おすすめ
Point-to-Point Cable Driver and Receiver Links
Chassis-to-chassis LVDS links over Cat-5-class twisted-pair or dedicated differential cable suffer significant high-frequency loss, producing deterministic jitter that random jitter budgets cannot absorb. The DS15BR400TVS/NOPB addresses this directly: its pre-emphasis, per TI documentation, is designed to overcome ISI jitter effects from lossy cables, while its 2 Gbps capability supports multi-gigabit payloads across four parallel channels. Operating from 3.0 V to 3.6 V, it drops into a 3.3 V system with 215 mA typical current. Using it as a mid-cable repeater or at the transmitter output restores eye margin at the receiver, lowering bit error rate. AC-coupling and termination per the datasheet typical application circuit are recommended for cable environments.
おすすめ
SerDes Link Buffering in Imaging Systems
Medical and industrial imaging systems frequently use TI 10-, 16-, and 18-bit LVDS serializers and deserializers, whose Bus LVDS levels the DS15BR400 is explicitly documented to interface with. Sensor data streams at multi-hundred-MHz to 2 Gbps rates must traverse flex cables and board-to-board connectors from the imaging head to the processing board. Placing the DS15BR400TVS/NOPB at the head output regenerates all four LVDS lanes with one IC, and pre-emphasis compensates flex-cable loss that would otherwise close the eye. Its low-jitter flow-through architecture preserves pixel-clock alignment critical to image quality. The 7 x 7 mm TQFP-48 footprint suits dense imaging head PCBs operating from a 3.3 V rail.
おすすめ
Telecom and Datacom Line Card Fan-Out
Telecom line cards distribute high-speed serial references and payload data from a central clock or framer card to multiple daughter cards. The DS15BR400TVS/NOPB provides four transparent LVDS channels at up to 2 Gbps, allowing one buffer to regenerate multiple payload or reference lanes without protocol dependencies or added latency from retiming. TI's datasheet highlights the low-jitter internal data path, which matters when the buffered signal is a clock reference where added deterministic jitter directly erodes timing margin. The 3.0 V to 3.6 V supply integrates into standard card power trees at 215 mA, and pre-emphasis settings can be tuned per slot to match varying backplane trace lengths across the shelf.
おすすめ
Industrial Automation Backplane Extension
Industrial controllers, drive systems, and machine-vision racks route parallel LVDS buses between processor, I/O, and sensor cards over backplanes exposed to longer trace lengths than consumer designs. The DS15BR400TVS/NOPB extends these links because its 2 Gbps headroom covers emerging higher-speed SER/DES families, and pre-emphasis combats the ISI jitter of heavily loaded backplanes, as stated in the TI product description. Its 3.0 V to 3.6 V operation tolerates industrial supply tolerance, and the TQFP-48 surface-mount package supports standard industrial reflow assembly. Because the buffer is transparent, it does not disturb proprietary framing protocols used in automation links. Budget the 215 mA typical supply current per device in the card power estimate.
おすすめ
Test and Measurement High-Speed Signal Distribution
Instrument architectures distribute fast serial triggers, sample clocks, and captured data between acquisition modules and the processing backplane. The DS15BR400TVS/NOPB suits this role because its low-jitter flow-through design, per TI documentation, minimizes internally added jitter - essential when the buffered signal is a measurement clock where every picosecond counts. Four channels at 2 Gbps allow one device to condition clock and companion data lanes together, maintaining skew relationships. Pre-emphasis restores margins over the lossy internal cabling typical of modular instruments, and the 3.0 V to 3.6 V, 215 mA supply requirement fits standard instrument power rails. The flow-through pinout eases controlled-impedance routing on multi-layer instrument backplanes.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: DS15BR400TVS/NOPB — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | DS15BR401TVS/NOPB | DS15BR400TVS/NOPB (Rochester) |
|---|---|---|---|
| Package | 48-TQFP (PFB), 7 x 7 mm | 48-TQFP (PFB), 7 x 7 mm - same | 48-TQFP (PFB), 7 x 7 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments (via Rochester Electronics) |
| Maximum Data Rate | 2 Gbps | 2 Gbps | 2 Gbps |
| Number of Channels | 4 | 4 | 4 |
| Supply Voltage | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V |
| Pre-Emphasis | Yes | Yes | Yes |
| Fault Detection / SAFE Switch | No | Yes | No |
主な差別化要因
- Simplest 4-channel solution without fault-management overhead （vs DS15BR401TVS/NOPB)
- Integrated pre-emphasis versus non-emphasized LVDS buffers （vs DS15BR401TVS/NOPB)
- Authorized aftermarket availability for legacy designs （vs DS15BR401TVS/NOPB)
設計ノート
Apply only as much pre-emphasis as the channel loss requires. Pre-emphasis boosts high-frequency output content to counter ISI jitter on lossy backplanes and cables (per TI datasheet), but excessive emphasis over-drives short channels and can violate receiver input swing limits. Characterize actual trace or cable loss first, then select the lowest emphasis level that opens the eye at the far end. Keep differential pair impedance at 100 ohm and length-match intra-pair skew tightly to preserve the 2 Gbps eye diagram.
Exploit the flow-through pinout: route all input pairs on one side of the TQFP-48 and output pairs on the opposite side without crossover, per the TI datasheet layout intent. This minimizes internal device jitter and avoids via transitions that add impedance discontinuity. Place 100 nF ceramic decoupling capacitors within 2 mm of each VCC pin plus one bulk 4.7 uF per device; the 215 mA supply current with 2 Gbps edges demands a low-inductance return path, so use a continuous ground plane under the package.
Do not substitute the DS15BR401 for the DS15BR400 on a board that leaves the SAFE/fault pins floating without checking the datasheet pin functions - although the parts share the footprint, the fault-detection function on the DS15BR401 must be tied off correctly to avoid spurious output states. Also, the 3.6 V absolute supply ceiling means 5 V-tolerant configurations are not available; protect inputs from overshoot on long backplanes with series damping resistors per the typical application circuit.
コンプライアンス情報
NOPB suffix denotes lead-free (no Pb) per TI naming convention; DigiKey lists the part as RoHS compliant. REACH, halogen-free, and conflict-minerals statuses were not present in the verified data.
