TUSB2070PT - 7-Port USB 1.0 Hub Controller | Texas Instruments
部品番号: TUSB2070PT ✗ 生産終了TUSB2070PT 概要
A USB hub controller is a type of USB interface controller: it sits between a host and one or more downstream devices, managing enumeration, power distribution, and data traffic across the bus. In the product-type hierarchy, a USB hub controller belongs to interface controllers, which are a subset of integrated circuits used for signal and protocol bridging. In an end system, the hub controller provides the physical fan-out layer between a single USB port and several peripherals, sitting below the host controller and above the physical USB transceiver layer.
Key characteristics of the TUSB2070PT include support for up to seven downstream ports, full-speed operation under USB Specification 1.0 rules, a monolithic CMOS implementation, and a single upstream port connection for the host link. The 48-pin LQFP (PT) body gives generous pin count for port-level control and status signalling, while the industrial-temperature 0 °C to +70 °C range suits commercial and light-industrial equipment. Detailed electrical ratings such as supply voltage, I/O current, and internal oscillator tolerance are not stated in the retrieved data and must be confirmed against the manufacturer datasheet.
Architecturally, the device implements the split-transaction, single-master USB 1.0 protocol stack internally, including host-controller interface signalling toward the upstream port and per-port transceiver interfacing toward downstream ports. It is a legacy architecture: modern designs normally use USB 2.0 high-speed hubs with integrated PHY and charge-pump regulators, so the TUSB2070 remains most relevant where a legacy USB 1.0 host must be expanded without changing the upstream device class.
Typical uses include legacy personal-computer and embedded host systems needing additional full-speed USB ports, industrial data-acquisition panels, point-of-sale and print peripherals, and test benches that replicate USB 1.0 topologies. Because it is an established, widely supported part with a long service history, it is frequently found in repair and legacy-platform maintenance programs.
Two design considerations matter most. First, the device is no longer the newest Texas Instruments 7-port hub: the manufacturer lists the TUSB2077A, also in a 48-LQFP package, as the replacement, so new designs should start there. Second, a 48-LQFP body demands careful decoupling and ground-plane continuity to keep USB signal integrity within the 1.0 specification budget.
This page consolidates distributor availability signals, a drop-in replacement analysis for the 48-LQFP 7-port hub footprint, lifecycle guidance, and practical design notes that are not gathered together in a single manufacturer datasheet.
ドロップイン代替品: TUSB2070PT — 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: TUSB2070PT （同一形状・フットプリント） — 相違点: Package.
TUSB2077A
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TUSB2070
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TUSB2040N
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →TUSB2043
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TUSB2070PT 仕様
| Device Type | USB 1.0 full-speed hub controller |
| Number of Downstream Ports | 7 ports |
| Upstream Ports | 1 upstream port |
| USB Specification Compliance | USB Specification Version 1.0 |
| Process Technology | CMOS |
| パッケージ | 48-pin LQFP (PT) |
| 実装タイプ | Surface Mount |
| 動作温度範囲 | 0 °C to +70 °C |
| ライフサイクル状態 | Obsolete - replaced by TUSB2077A |
| Shipping Method | Tube |
TUSB2070PT 48-pin lqfp (pt) ピン配置ガイド
TUSB2070PT (48-pin lqfp (pt) 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: TUSB2070PT.
詳細は データシート をご参照ください。
主な用途
TUSB2070PT の用途: 6 件s: Legacy Full-Speed USB Port Expansion, Industrial Data-Acquisition Panels, Point-of-Sale Terminal Peripherals, Legacy Test and Measurement Bench, Embedded Service and Maintenance Consoles, Legacy USB Peripherals and Retrofit Projects.
Legacy Full-Speed USB Port Expansion
The TUSB2070PT solves the port-deficit problem on legacy full-speed hosts that expose a single USB port but need to serve several peripherals. With up to seven downstream ports and one upstream port, it consolidates keyboards, mice, card readers, and printers behind one connector, eliminating the need for external hubs in the enclosure. Because the hub is implemented in CMOS and conforms to USB Specification Version 1.0, it behaves as a transparent full-speed repeater with per-port connection status, so legacy device drivers and enumeration logic on the host require no modification. The practical trade-off is that every downstream port operates at full speed, so high-bandwidth devices such as external storage or cameras cannot be attached to it. The 48-pin LQFP (PT) body and 0 °C to +70 °C commercial rating suit indoor enclosure temperatures.
おすすめ
Industrial Data-Acquisition Panels
Industrial measurement panels frequently mix USB-controlled instruments with service laptops, and the TUSB2070PT provides a single upstream link to as many as seven downstream instrument ports in a ruggedized box. The 0 °C to +70 °C commercial range covers most indoor factory-floor enclosures without needing an extended-temperature part, and the 48-pin LQFP (PT) package is easy to hand-assemble and rework on larger boards. Using a hub keeps the instrument USB ports behind a common upstream connection so a single cable reaches the enclosure, which simplifies sealing and strain relief. Designers should note that the part is obsolete and quote-only, so production programs with any volume forecast should move to the TUSB2077A or a current USB 2.0 hub controller to avoid single-source obsolescence risk on repair units.
おすすめ
Point-of-Sale Terminal Peripherals
Point-of-sale terminals must expose USB for printers, barcode scanners, card readers, and customer displays, and the TUSB2070PT gives the terminal one upstream USB connection with seven downstream ports in a single 48-pin LQFP device. Full-speed operation is sufficient for the HID-class scanners and USB printers typical of POS equipment, and the commercial 0 °C to +70 °C rating matches indoor retail conditions. Per-port status lines let the terminal detect which peripheral is attached without polling software changes, simplifying enumeration in fixed-installation kiosks. Because the device is legacy and obsolete, new POS platforms generally select a USB 2.0 hub controller, whereas this part remains appropriate for sustaining installed POS hardware where an exact 48-LQFP footprint match is required.
おすすめ
Legacy Test and Measurement Bench
On a test bench that validates full-speed USB devices, the TUSB2070PT lets one bench PC port drive up to seven DUTs or instruments in parallel, which shortens throughput cycles compared with swapping cables by hand. The 48-pin LQFP (PT) package uses through-hole-style leads, making it easy to socket, rework, or replace on bench adapter boards, and the 0 °C to +70 °C range suits controlled laboratory environments. Keep in mind that the hub is transparent only for full-speed traffic: any high-speed device connected to it falls back to full-speed operation or enumerates at reduced capability, and enumeration of multiple bus-powered devices can trip USB current limits. For new benches, a USB 2.0 hub controller provides headroom while retaining the same seven-port fan-out topology.
おすすめ
Embedded Service and Maintenance Consoles
Field-service consoles built around legacy embedded boards often need several USB ports for flash programming, serial adapters, and diagnostics, and the TUSB2070PT supplies up to seven downstream ports from a single connector at the enclosure wall. Its CMOS implementation and compact 48-pin LQFP (PT) footprint suit space-constrained service boxes, while the 0 °C to +70 °C rating matches vehicle and kiosk interiors that are not temperature-controlled. A key practical point is that a single upstream link also centralises power, so the design must respect USB bus-powered current limits across all seven ports and use self-powered downstream devices where the aggregate current would exceed the budget. For new service-console builds, verify whether a current-generation USB 2.0 hub controller offers better sourcing than this obsolete part.
おすすめ
Legacy USB Peripherals and Retrofit Projects
Retrofit and brownfield projects that must preserve an existing USB 1.0 topology find the TUSB2070PT useful as a drop-in port multiplier on boards that were never designed with more than one connector. Because the device is a mature, field-proven controller with an established 48-LQFP footprint, it can be placed on rework adapters and used to bring legacy peripherals up to a modern host PC without rewriting host firmware. The obsolete status is the dominant engineering concern: supply is limited and quote-based, so long-lived programs should secure stock early or migrate to the TUSB2077A, which shares the same package, port count, and temperature rating. Also verify that the host supplies adequate bus power, since adding seven ports can overload an already marginal USB power budget.
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: TUSB2070PT — 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 | TUSB2077A | TUSB2070 | TUSB2040 | TUSB2043 |
|---|---|---|---|---|---|
| Package | 48-LQFP (PT) | 48-LQFP (PT) - same | 48-LQFP (PT) - same | 48-LQFP (PT) - same | 48-LQFP (PT) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Downstream Port Count | 7 | 7 | 7 | 4 | 4 |
| Upstream Port Count | 1 | 1 | 1 | 1 | 1 |
主な差別化要因
- Seven downstream ports in a single 48-LQFP controller （vs TUSB2040)
- Directly drop-in replaceable by the current-generation successor （vs TUSB2077A)
- Single-brand sourcing with full 48-LQFP family options （vs TUSB2043)
設計ノート
Do not begin a new PCB layout with the TUSB2070PT. The part is documented as obsolete and replaced by the TUSB2077A, so every new design should be started from the successor datasheet while keeping the same 48-pin LQFP (PT) land pattern. If an existing board must be reworked, the TUSB2077A can replace the TUSB2070PT directly, but confirm supply voltage tolerance, I/O drive strength, and any pin-level differences between the two datasheets before committing to volume production.
Estimated: with seven downstream ports populated and bus-powered devices on every port, the aggregate USB current can approach the 500 mA full-speed budget, and a hub that sources downstream current internally increases the host port demand further. Reserve host-side current headroom, use self-powered downstream devices where the load is significant, and confirm the hub's own supply current against the manufacturer datasheet, since the retrieved distributor data does not state quiescent current or supply voltage limits.
Keep the USB data traces short and matched, provide a continuous ground reference directly under the 48-LQFP (PT) body, and place local decoupling close to the supply pins to keep switching and loop inductance from corrupting the differential data lines. Because the TUSB2070 is a full-speed-only device, the timing margin is generous compared with USB 2.0, but marginal routing can still cause enumeration retries when several devices are hot-plugged simultaneously.
Never attach a USB 2.0 high-speed device such as a webcam, external drive, or video adapter to a downstream port of the TUSB2070PT and expect high-speed operation; the hub is a USB Specification Version 1.0 full-speed device, so such peripherals will enumerate at reduced capability or fail to enumerate at all. Also budget for obsolete-part supply risk: distributor listings show RFQ-only purchasing, and quote lead times rather than assuming factory availability.
コンプライアンス情報
The retrieved distributor data does not include RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements for the TUSB2070PT. Compliance must be confirmed from the manufacturer datasheet or the distributor product page. The part is a commercial-temperature (0 °C to +70 °C) USB interface controller, so AEC-Q100 automotive qualification is not indicated.
