DP83849IVSX/NOPB - Dual 10/100 Ethernet PHY | Texas Instruments
料号： DP83849IVSX/NOPB ✓ 量产中DP83849IVSX/NOPB 概述
An Ethernet PHY, also called an Ethernet physical-layer transceiver, converts digital data into signaling suitable for copper-based Ethernet networks and recovers data from incoming physical-layer signals. The DP83849I belongs to the transceiver hierarchy, where PHY functionality sits below the Ethernet MAC and above the physical medium. Integrating two PHYs with flexible port switching lets one host processor manage two copper ports and route traffic according to application requirements.
Key characteristics include dual-channel 10/100-Mbps operation, configurable port switching, an 80-pin TQFP package, and a 3.3 V operating supply. The part is intended for industrial Ethernet systems where temperature range and dual-port integration simplify board planning compared with using two separate single-port transceivers. Because the PHY handles the analog and digital signaling layer, the surrounding host design still requires an Ethernet MAC or a controller with an appropriate media-access interface.
Typical uses include industrial Ethernet switches, network interface controllers, media-conversion equipment, embedded control systems, and dual-port industrial gateways. The flexible switching architecture can support designs in which both PHY ports contribute to a single switching function rather than operating as completely independent interfaces. Designers should confirm the required port configuration, media-access interface support, reference design topology, and magnetics requirements against the manufacturer datasheet before layout begins.
A key implementation consideration is that the 80-pin TQFP footprint requires careful routing of high-speed differential pairs and supply connections. Keep the differential pairs short, continuous, and referenced to a solid ground plane, then place the interface protection and magnetic components in line with the manufacturer reference layout. Use the pin-description table in the manufacturer datasheet when assigning every PCB track, and validate cable, magnetics, and isolation requirements for the deployed industrial environment.
This page organizes the manufacturer ordering information, verified distributor listings, package details, drop-in alternatives, and practical interface-design guidance into one engineering-focused reference for dual-port 10/100-Mbps Ethernet designs.
直接替换替代料： DP83849IVSX/NOPB ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： DP83849IVSX/NOPB （相同外形与封装尺寸） ——差异在于 Package, Temperature Grade.
DP83849IVS/NOPB
✅ 直接替换联系询价
查看数据手册 →DP83849IDVSX/NOPB
✅ 直接替换联系询价
查看数据手册 →DP83849IVSX/NOPB 规格参数
| Device Type | Dual-port 10/100-Mbps Ethernet physical-layer transceiver |
| Number of PHY Channels | 2 |
| Supported Data Rates | 10 Mbps and 100 Mbps |
| Network Standard | 10/100 Ethernet |
| Port Switching | Flexible port switching |
| 电源电压 | 3.3 V |
| 工作温度范围 | -40 °C to +85 °C |
| Temperature Grade | Industrial |
| 封装 | 80-pin TQFP (PFC), 12 x 12 mm |
| Package Type | TQFP |
| Package Pin Count | 80 pins |
| 安装类型 | Surface mount |
| Transceiver Configuration | 2 transmit and 2 receive channels |
| Ordering Code Suffix | SX/NOPB |
DP83849IVSX/NOPB 80 pins 引脚配置指南
DP83849IVSX/NOPB（80 pins 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： DP83849IVSX/NOPB.
请参阅 数据手册 以查看完整引脚配置。
典型应用
DP83849IVSX/NOPB 适用于 6 应用s: Industrial Ethernet Switching Equipment, Dual-Port Network Interface Controller, Industrial Gateway and Edge Router, Ethernet Media Converter, Embedded Automation Controller, Redundant Industrial Network Endpoint.
Industrial Ethernet Switching Equipment
The DP83849IVSX/NOPB fits industrial switching equipment that needs two 10/100-Mbps copper interfaces in one device. Its flexible port switching and industrial -40 °C to +85 °C rating support equipment operating beyond a typical office environment. Place the two PHY channels close to their respective connectors and magnetics, then route each 100-Mbps differential pair over a continuous ground reference with no plane splits. The 3.3 V supply architecture aligns with contemporary switching silicon, while the 80-pin TQFP package provides access to the complete dual-channel interface.
推荐
Dual-Port Network Interface Controller
The DP83849IVSX/NOPB is suitable for a controller that must manage two 10/100-Mbps links for redundancy, bridging, or traffic distribution. The dual PHY channels avoid two separate single-port transceiver footprints on a space-constrained board. Designers should confirm the required management and data interfaces, then allocate the PHY reference clock and supply domains according to the manufacturer reference design. Differential pair routing must remain symmetrical because mismatched lengths can degrade signal integrity and increase electromagnetic emissions.
推荐
Industrial Gateway and Edge Router
The DP83849IVSX/NOPB can serve as the dual copper Ethernet front end of an industrial gateway or edge router. Two 10/100-Mbps ports support equipment-to-network and equipment-to-device connectivity while a host processor handles protocol conversion. The industrial temperature range of -40 °C to +85 °C suits equipment expected to operate in uncontrolled spaces. Use surge protection and isolation components appropriate to the cable environment, and keep protection devices away from the high-speed differential pairs to minimize added parasitic capacitance.
推荐
Ethernet Media Converter
The DP83849IVSX/NOPB fits copper-to-fiber media-conversion equipment because it combines two 10/100 copper PHYs in one industrial package. The manufacturer describes a DP83849 evaluation-board methodology for implementing a 10/100BASE-TX to 10/100BASE-FX media converter, which provides a useful architectural starting point. Design the copper side around the manufacturer reference layout and keep the fiber-side circuitry physically separated to reduce coupling between high-speed interfaces.
推荐
Embedded Automation Controller
The DP83849IVSX/NOPB is appropriate for embedded automation equipment with two Ethernet ports used for a control network and an engineering workstation. The industrial temperature range supports industrial enclosures, while flexible port switching can simplify dual-link traffic management. Provide clean 3.3 V regulation with local high-frequency decoupling at the device and isolate copper interfaces from chassis and surge paths. Validate the controller timing, PHY register configuration, and startup sequence using the manufacturer evaluation material.
推荐
Redundant Industrial Network Endpoint
The DP83849IVSX/NOPB supports redundant network endpoint designs in which two 10/100-Mbps copper paths provide link backup or segmented connectivity. Its two integrated PHYs reduce the board area and component count associated with separate transceivers. Implement the redundancy policy in the host MAC or switch controller rather than assuming the PHY performs network-level failover autonomously. Test link-loss recovery, cable insertion, and startup timing under worst-case system load because these behaviors are controlled by the surrounding network architecture.
推荐
推荐产品汇总
工程参考数据： DP83849IVSX/NOPB ——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 | DP83849IVS/NOPB | DP83849IDVSX/NOPB |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 80-pin TQFP (PFC), 12 x 12 mm | 80-pin TQFP (PFC), 12 x 12 mm | 80-pin TQFP (PFC), 12 x 12 mm |
| PHY Channels | 2 | 2 | 2 |
| Supported Data Rates | 10 Mbps and 100 Mbps | 10 Mbps and 100 Mbps | 10 Mbps and 100 Mbps |
关键差异点
- Two copper PHY channels in one device （对比 KSZ8041TL-TR)
- Industrial operating range （对比 DP83849IVS/NOPB)
- Dual-port integration for board-space reduction （对比 KSZ8721BL-TR)
设计说明
Follow the manufacturer reference layout for the 80-pin PFC TQFP footprint. Place each 10/100-Mbps differential pair as a short, continuous, impedance-controlled route over a solid ground reference. Avoid plane splits, right-angle turns, and long stubs between the PHY and the magnetics or protection network, since these transitions can degrade differential signaling and increase emissions.
Distribute the 3.3 V supply to the PHY with local decoupling placed close to the device pins. Keep high-current switching supply paths and inductors physically separated from the Ethernet differential pairs. Review the complete power-up sequence and any required enable or reset sequencing in the manufacturer datasheet before power is applied to the assembled board.
Do not treat every DP83849I ordering suffix as functionally identical. The verified cross-reference results identify DP83849IVS/NOPB and DP83849IDVSX/NOPB as related family members, but cable diagnostics, fiber support, flexible-port features, and interface configuration can differ. Compare the ordering table, pin configuration, and register requirements before approving a substitution.
Use manufacturer-recommended Ethernet magnetics and protection components, and route chassis, surge, and isolation paths so they do not pass directly beneath the high-speed pairs. Keep the PHY-to-connector interface compact and preserve symmetric pair geometry. Verify radiated and conducted emissions in the final enclosure because cable placement and enclosure grounding can materially change compliance results.
合规信息
The NOPB ordering suffix is associated with lead-free packaging, but explicit RoHS, REACH, halogen-free, and conflict-minerals statements are not stated for this exact ordering code. AEC-Q100 is not applicable to this industrial interface IC.
