TUSB2140N - 4-Port USB 2.0 Hub Controller | Texas Instruments
料号： TUSB2140N ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
TUSB2140N 概述
A USB hub controller is an interface IC that manages traffic between one upstream USB host connection and multiple downstream USB ports. Within the product hierarchy, it is a USB interface controller, bus controller, interface IC, and semiconductor. By organizing USB connectivity and exposing configuration functions through a compatible control bus, this type of device reduces the amount of discrete logic required in a multiport USB product.
The TUSB2140N provides four downstream hub ports, operates up to 48 MHz, supports I2C compatibility, and is available in a 40-terminal rectangular DIP package. The verified distributor data classifies it as an industrial-temperature component with through-hole terminals. These characteristics make it relevant to legacy industrial USB hubs, embedded USB expansion equipment, and systems designed around the original TUSB2140 interface rather than newer hub controllers.
Technically, the device combines USB host-interface management and an embedded function in one controller. Its 48 MHz maximum operating frequency supports the clocking requirements associated with this USB 2.0 hub-controller generation, while I2C compatibility offers a practical path to configuration and supervisory control. The 40-pin DIP format favors through-hole assembly and repairability, but it consumes considerably more board area than contemporary surface-mount hub controllers.
Typical applications include industrial USB hubs, embedded test equipment, peripheral aggregation systems, legacy USB expansion cards, and OEM products that retain the TUSB2140 architecture. Because the part is an older through-hole design, engineers should also assess modern surface-mount alternatives or the indicated TUSB2046B successor when new PCB area, sourcing, or lifecycle constraints favor redesign.
The primary design consideration is lifecycle and availability. Verified marketplace data states that TUSB2140N was replaced by TUSB2046B, while current stock and pricing are offered through brokers and distributors. For new production, confirm lifecycle status, exact electrical compatibility, and pin-level equivalence before substituting any successor; a USB hub change can affect enumeration, power management, and downstream-port behavior.
This page consolidates verified distributor specifications, the replacement relationship, source links, and engineering selection guidance. It distinguishes documented TUSB2140N attributes from unavailable parameters, helping procurement and design engineers make a grounded legacy-support or migration decision.
直接替换替代料： TUSB2140N ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
TUSB2140BN
✅ 直接替换📋 参考替代料（不在目录中）
TUSB2140
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TUSB2140N 规格参数
| Product Type | 4-port USB 2.0 hub controller with embedded function |
| Number of USB Ports | 4 ports |
| 最大时钟频率 | 48 MHz |
| I2C Compatibility | Compatible |
| Device Classification | Universal Serial Bus bus controller |
| Temperature Grade | Industrial |
| Package Type | 40-PDIP |
| Package Code | DIP |
| Package Shape | Rectangular |
| 安装类型 | Through-hole |
| Number of Terminals | 40 terminals |
| Lead Pitch | 15.24 mm |
| Replacement Part | TUSB2046B |
TUSB2140N rectangular 引脚配置指南
TUSB2140N（rectangular 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： TUSB2140N.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TUSB2140N 适用于 6 应用s: Legacy industrial USB hubs, USB peripheral aggregation, Embedded USB test equipment, Legacy peripheral expansion cards, USB-to-serial bridging systems, Kiosk and point-of-sale peripherals.
Legacy industrial USB hubs
The TUSB2140N fits legacy industrial USB-hub maintenance because it combines four downstream hub ports with an embedded function in a 40-PDIP industrial-temperature device. Its maximum clock frequency of 48 MHz and I2C compatibility support the control and bus requirements of this controller generation. In an existing installation, retaining the through-hole controller avoids an unnecessary board redesign while preserving four-port expansion. The main trade-off is obsolete lifecycle status: as of 2026-10-23, current stock and pricing are quote- or distributor-dependent, so production teams should document condition, traceability, and delivery assurance.
推荐
USB peripheral aggregation
The TUSB2140N is suitable for peripheral aggregation when one upstream USB host connection must fan out to four downstream devices. The four-port hub architecture centralizes port routing, while the embedded function adds controller capability without requiring a separate device for that portion of the design. Its 48 MHz maximum clock frequency is the verified timing headline to evaluate against upstream traffic and downstream loads. The 40-PDIP package is mechanically simple to inspect and repair, although it occupies more PCB area than a modern surface-mount hub controller.
推荐
Embedded USB test equipment
The TUSB2140N can support embedded USB test equipment that needs four downstream connections for peripherals, instruments, or service interfaces. The integrated embedded function reduces controller overhead, and the 48 MHz maximum operating frequency provides a concrete basis for checking the clocking and signal-integrity budget. I2C compatibility is useful when supervisory control must be coordinated with the hub. For new test platforms, engineers should weigh this through-hole controller against TUSB2046B or another current four-port hub because verified lifecycle information indicates that TUSB2140N has already been replaced.
推荐
Legacy peripheral expansion cards
The TUSB2140N fits expansion cards built around the original TUSB2140 architecture, especially where an existing PCB already routes a 40-PDIP footprint and exposes four USB ports. Through-hole assembly supports manual insertion, rework, and field replacement, while the industrial temperature grade matches the verified product classification. The same migration caveat applies: use TUSB2140N mainly to sustain proven hardware, not to launch a new platform without checking TUSB2046B’s package and pin compatibility. Its 48 MHz clock limit and I2C compatibility should be included in the legacy design’s signal and control verification.
推荐
USB-to-serial bridging systems
The TUSB2140N can participate in USB-to-serial bridging systems by providing four downstream USB attachment points for one host bus, allowing several serial adapters to share the same upstream connection. Its embedded function supports integration of additional control behavior, while I2C compatibility can coordinate configuration with an external controller. The design must still validate USB enumeration, per-port current limits, ESD strategy, and signal integrity because these values are not available in the retrieved excerpts. The 40-PDIP format favors repairable industrial equipment rather than compact consumer adapters.
推荐
Kiosk and point-of-sale peripherals
The TUSB2140N is potentially useful in a legacy kiosk or point-of-sale system requiring several USB peripherals behind one host port. Four downstream ports reduce external hub count, and I2C compatibility permits supervisory coordination with equipment that already uses a serial control bus. The industrial-grade classification supports deployment in controlled commercial or industrial environments, but the supplied sources do not provide the numeric temperature range, USB compliance declarations, or power specifications. New kiosk designs should begin with the documented TUSB2046B successor unless retaining the existing 40-PDIP board offers a clear lifecycle advantage.
推荐
推荐产品汇总
工程参考数据： TUSB2140N ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TUSB2140BN | TUSB2140 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 40-PDIP | 40-PDIP | 40-PDIP |
| Number of USB Ports | 4 ports | 4 ports | 4 ports |
| Mounting Type | Through-hole | Through-hole | Through-hole |
关键差异点
- Maintains a straightforward four-port legacy hub design （对比 TUSB2046B)
- Same-brand service continuity for existing installations （对比 TUSB2140BN)
- Embedded function integrated with four-port hub control （对比 TUSB2140)
设计说明
Do not treat TUSB2046B as a confirmed no-change PCB substitution solely because marketplace data calls it the replacement. Compare the original 40-PDIP pinout, exposed functions, supply voltage, clock source, USB data connections, and embedded-function signals against the TUSB2046B datasheet. A functional migration can still require component changes, revised clocking, different decoupling, or a new board layout.
Validate the complete USB power budget before layout. The supplied excerpts do not provide operating voltage, device supply current, or per-port current limits, so these values must come from the manufacturer datasheet and the downstream USB specification. Include protection, isolation, and port-current budgeting in schematic review; do not infer safe load limits from the four-port description or 48 MHz clock rating.
Route high-speed USB differential pairs as controlled-impedance traces with short returns and continuous reference planes. Keep the 48 MHz-related clock and USB routing away from noisy switching nodes, and verify series termination, connector placement, and ESD-return paths using the device and connector guidance. Because detailed rise-time and impedance data are absent from the verified excerpts, use the full datasheet and USB channel validation rather than general assumptions.
Preserve the original 40-PDIP footprint when maintaining a proven board, but account for through-hole mechanical tolerances, connector access, and inspection requirements. For a new layout, compare the area and assembly cost of this DIP controller with the documented TUSB2046B successor and current surface-mount hub options. Prototype level shifting, clock startup, enumeration, and downstream hot-plug behavior before production release.
合规信息
The supplied sources verify industrial temperature grade and the TUSB2046B replacement relationship but provide no explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements. AEC-Q100 is not applicable to this general-purpose USB hub controller based on the verified product positioning.
