TUSB2551PW - USB 2.0 Half Transceiver | Texas Instruments
料号： TUSB2551PW ✓ 量产中TUSB2551PW 概述
A USB transceiver is an interface IC that converts digital controller signals into USB-compatible physical-layer signals and receives the corresponding bus signals from a USB connection. The TUSB2551 belongs to the USB interface transceiver hierarchy, alongside USB interface controllers, USB hubs, and USB power-management devices. Unlike a USB controller, it does not implement protocol or enumerate bus devices; it provides the physical-layer path between a USB-capable controller and a connector or cable.
The TUSB2551 supports both full-speed and low-speed USB 2.0 operation. Texas Instruments identifies superior edge-rate control as a means of producing crisper eye diagrams, which can simplify USB compliance testing. Dual-supply operation allows the digital and analog portions of the device to use separate supply rails. The 1.65 V to 3.6 V operating range supports common 1.8 V and 3.3 V system environments while accommodating lower-voltage interface requirements.
Typical uses include USB-to-serial bridges, embedded USB peripherals, industrial data acquisition, portable diagnostic equipment, and USB connectivity for microcontrollers that require an external physical-layer transceiver. Its 14-pin TSSOP format also supports PCB layouts that prioritize a small, widely available package rather than a leadless land pattern. System designers should still verify signal integrity, termination, cable routing, and supply sequencing against the manufacturer datasheet.
For USB applications, the transceiver is used between the host or device controller and the connector. Differential pair routing should be short and impedance controlled, while supply and ground connections should provide low-impedance return paths. The device's low-voltage supply range makes it useful for portable equipment, but total system power, connector-current capability, and USB specification compliance remain separate design considerations.
This page combines the verified Texas Instruments product information, distributor listings, package details, available cross-reference evidence, and practical guidance for evaluating the TUSB2551PW. It also distinguishes confirmed pin-compatible options from unreported electrical parameters so engineers can identify which data must be checked before approving a replacement.
直接替换替代料： TUSB2551PW ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
TUSB2551PWR
✅ 直接替换📋 参考替代料（不在目录中）
TUSB2551PWG4
✅ 直接替换📋 参考替代料（不在目录中）
TUSB2551PW 规格参数
| Device Type | Single USB 2.0 half transceiver |
| USB Specification | USB 2.0 |
| Supported Full-Speed Data Rate | 12 Mbit/s |
| Supported Low-Speed Data Rate | 1.5 Mbit/s |
| Supply Voltage Range | 1.65 V to 3.6 V |
| Supply Architecture | Dual-supply operation |
| Transceiver Count | 1 transceiver |
| 封装 | 14-pin TSSOP, 4.4 mm width |
| 安装类型 | Surface mount |
| 工作温度范围 | -40°C to +85°C |
| RoHS Compliance | Compliant |
| Edge-Rate Control | Supported; produces crisper eye diagrams according to the manufacturer |
| USB Physical-Layer Compliance | Compliant with USB 2.0 physical-layer specifications |
TUSB2551PW 14-pin tssop, 4.4 mm width 引脚配置指南
TUSB2551PW（14-pin tssop, 4.4 mm width 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： TUSB2551PW.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TUSB2551PW 适用于 6 应用s: Industrial USB Data Acquisition, USB-to-Serial Embedded Bridge, Portable Medical Diagnostic Interface, USB Networking and Service Adapter, Security and Surveillance Peripherals, Test and Measurement Front End.
Industrial USB Data Acquisition
The TUSB2551PW fits industrial data-acquisition equipment that connects a controller or processor to a USB host through a full-speed or low-speed physical layer. Its 12 Mbit/s full-speed capability is sufficient for control data, status reporting, and moderate diagnostic transfers, while the 1.65 V to 3.6 V operating range supports low-voltage embedded hardware. The 14-pin TSSOP simplifies assembly in compact industrial controller boards. According to the Texas Instruments product page, improved edge-rate control produces crisper eye diagrams and can ease USB compliance testing. Designers should preserve controlled differential routing, provide a continuous ground reference, and confirm that the upstream controller, connector, and software stack are compatible with 12 Mbit/s operation.
推荐
USB-to-Serial Embedded Bridge
The TUSB2551PW can provide the physical layer for an embedded USB-to-serial bridge when a host interface must communicate with a microcontroller or programmable logic device. Full-speed operation at 12 Mbit/s is appropriate for configuration transfers, command exchange, and moderate telemetry, while the transceiver's dual-supply capability allows interface rails to be selected independently. The 14-pin TSSOP package is practical for compact control boards and supports mainstream surface-mount assembly. Texas Instruments states that the edge-rate control helps generate crisper eye diagrams, which supports signal-integrity and compliance work. The final design must still verify the controller's USB electrical requirements, connector data signaling, and device enumeration behavior.
推荐
Portable Medical Diagnostic Interface
The TUSB2551PW is suitable for portable diagnostic and monitoring equipment that connects a compact embedded controller to a USB host. Its low-voltage 1.65 V to 3.6 V operating range accommodates battery- and low-voltage-powered designs, while USB 2.0 full-speed service at 12 Mbit/s is appropriate for configuration and diagnostic data rather than high-bandwidth imaging. The 14-pin TSSOP keeps the interface physically compact, and the manufacturer's edge-rate-control feature can assist eye-diagram quality and USB compliance testing. Medical equipment designs must separately assess electrical isolation, patient protection, EMC, and applicable regulatory requirements; none of those system-level safeguards is implied by the transceiver specification alone.
推荐
USB Networking and Service Adapter
The TUSB2551PW can be used in service adapters, configuration tools, and simple USB networking accessories that rely on full-speed or low-speed USB rather than 480 Mbit/s high-speed links. The 12 Mbit/s full-speed mode provides sufficient bandwidth for control traffic, firmware updates, and status exchange, and the 1.65 V to 3.6 V range supports both 1.8 V and 3.3 V interface designs. Its 14-pin TSSOP footprint is compatible with compact adapter hardware. The Texas Instruments product page highlights dual-supply operation and edge-rate control as practical benefits. Implementers should still check the host-side software expectations, USB descriptor implementation, and connector shield or chassis grounding requirements.
推荐
Security and Surveillance Peripherals
The TUSB2551PW can support USB connectivity in security consoles, camera-control adapters, and surveillance accessories whose data rate is modest. A 12 Mbit/s full-speed link is appropriate for control commands, still-image transfer at reduced throughput, and device management, while the low-voltage supply range suits compact embedded electronics. The 14-pin TSSOP package enables placement beside an embedded controller or programmable logic device. Manufacturer edge-rate control can produce crisper eye diagrams and help designers during USB compliance testing, although cable length, connector type, EMI, and enclosure grounding remain critical at the system level. Any new surveillance product must also verify its intended host operating system and device-class compatibility.
推荐
Test and Measurement Front End
The TUSB2551PW fits low-speed and full-speed USB interfaces on test, measurement, and calibration equipment where a host computer configures an instrument or retrieves compact status data. The 1.65 V to 3.6 V operating range integrates with low-voltage digital systems, and dual-supply operation can separate transceiver supply domains. The 14-pin TSSOP is practical for compact instrument controller boards. Texas Instruments states that the device's edge-rate control produces crisper eye diagrams, helping engineers evaluate signal quality and USB compliance. For laboratory instruments, the complete design must also address grounding, isolation, measurement accuracy, and host-driver behavior because the transceiver only implements the USB physical-layer interface.
推荐
推荐产品汇总
工程参考数据： TUSB2551PW ——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 | TUSB2551PWR | TUSB2551PWG4 |
|---|---|---|---|
| Package | 14-pin TSSOP, 4.4 mm width | 14-pin TSSOP - same | 14-pin TSSOP - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Device Type | Single USB 2.0 half transceiver | Single USB 2.0 half transceiver | USB transceiver |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C |
关键差异点
- Explicitly documented full replacement （对比 TUSB2551PWR)
- Compact 14-pin TSSOP implementation （对比 TUSB2551PWG4)
- Low-voltage operation suited to embedded systems （对比 TUSB2551PWR)
设计说明
Route the USB differential pair as a tightly coupled pair with continuous reference-plane support, minimize stubs and test-point discontinuities, and avoid crossing plane splits. Keep the transceiver, connector, protection devices, and decoupling capacitors in the same USB signal path region. The supplied evidence identifies edge-rate control as beneficial for eye-diagram quality, but controlled impedance, return-path continuity, and connector placement remain essential engineering requirements.
Use the 1.65 V to 3.6 V operating range to select the correct interface supply rails, and honor the device's dual-supply capability when analog and digital domains use separate voltages. Place the required bypass capacitors immediately beside their associated supply and ground pins, with short, low-inductance connections. Verify capacitor effective capacitance and voltage derating at the actual supply because the verified search data does not provide a recommended capacitor list.
Do not treat the TUSB2551PW as a USB 2.0 high-speed transceiver: the verified device supports 12 Mbit/s full-speed and 1.5 Mbit/s low-speed operation only. Also, a same-package replacement must be checked for parameter differences before production use. TUSB2551PWR has an explicit complete-replacement cross-reference, whereas the available TUSB2551PWG4 comparison reports differing main parameters and therefore requires datasheet review.
合规信息
RoHS compliance is stated by Datasheets.com. The other compliance attributes were not confirmed in the supplied verified data. The product is not described as AEC-Q100 qualified.
