DP83848KSQ/NOPB - 10/100 Ethernet PHY, WQFN-40 | Texas Instruments
料号： DP83848KSQ/NOPB ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.2 | $7.20 |
| 10 | $6.45 | $64.50 |
| 100 | $5.1 | $510.00 |
| 500 | $4.2 | $2,100.00 |
| 1,000 | $3.55 | $3,550.00 |
DP83848KSQ/NOPB 概述
An Ethernet PHY is the physical layer transceiver that interfaces between a digital MAC (Media Access Controller) and the physical twisted-pair cable. It handles encoding, serialization, line driving, and reception of Ethernet frames. The DP83848x family belongs to the PHYTER series, within the broader hierarchy of Ethernet interface ICs -> network interface ICs -> communication interface ICs -> integrated circuits.
Key features include Auto-MDIX for automatic crossover detection, eliminating the need for crossover cables. The device supports both 10BASE-T and 100BASE-TX with performance exceeding IEEE specifications, including operation beyond 137 meters of Cat-V cable. It offers low power consumption and a small footprint suitable for space-constrained designs, with industrial temperature support from -40C to +85C.
The DP83848K integrates a digital adaptive equalizer, echo canceller, and baseline wander correction to ensure reliable data transmission. The device includes an MDIO serial management interface for configuration and status monitoring, with support for dynamic control of Auto-MDIX and LED indicators. The architecture is built on a low-power 3.3V CMOS process, achieving IEEE 802.3u compliance.
Typical applications include industrial control systems, embedded networking, IP cameras, IoT gateways, factory automation controllers, and building automation. The industrial temperature range makes it suitable for harsh environments such as outdoor enclosures, machine-to-machine communication, and test equipment with extended thermal requirements.
When designing with this PHY, ensure proper isolation transformer selection and 50 ohm termination resistors for the magnetics interface. Careful PCB layout is required to minimize EMI and maintain signal integrity on the differential pairs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： DP83848KSQ/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： DP83848KSQ/NOPB （相同外形与封装尺寸） ——差异在于 Data Rate, MAC Interface, Operating Temperature, Package, Product Type.
快速对比工具——选择替代料号进行并排对比：
DP83848JSQ/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
DP83848QSQE/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
DP83848TSQ/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
DP83848KSQ/NOPB 规格参数
| Product Type | Ethernet PHY Transceiver |
| 数据速率 | 10/100 Mbps |
| 电源电压 | 3.0 V to 3.6 V |
| 工作温度 | -40C to +85C |
| 接口类型 | MII / RMII |
| Number of Ports | 1 |
| 封装 | WQFN-40 (6x6 mm) |
| 安装类型 | Surface Mount |
| Auto-MDIX | Yes |
| Standards Compliance | IEEE 802.3u |
| Cable Reach | Beyond 137 m (Cat-V) |
| MSL 等级 | 3 |
| RoHS 状态 | Compliant |
| Lead Free | Yes |
| MAC Interface | MII / RMII / SNI |
DP83848KSQ/NOPB 引脚配置
| 引脚 1 | TXOP — Differential transmit output positive |
| 引脚 2 | TXON — Differential transmit output negative |
| 引脚 3 | RXIP — Differential receive input positive |
| 引脚 4 | RXIN — Differential receive input negative |
| 引脚 5 | VDD33A — Analog 3.3V supply |
| 引脚 6 | VSS33A — Analog ground |
| 引脚 7 | LED_LINK — Link status LED indicator |
| 引脚 8 | LED_SPEED — Speed status LED indicator |
| 引脚 9 | LED_ACT — Activity LED indicator |
| 引脚 10 | MDIO — Management data I/O |
| 引脚 11 | MDC — Management data clock |
| 引脚 12 | RESET — Hardware reset (active low) |
| 引脚 13 | TX_CLK — MII transmit clock |
| 引脚 14 | TX_EN — MII transmit enable |
| 引脚 15 | TXD0 — MII transmit data 0 |
| 引脚 16 | TXD1 — MII transmit data 1 |
| 引脚 17 | TXD2 — MII transmit data 2 |
| 引脚 18 | TXD3 — MII transmit data 3 |
| 引脚 19 | RX_CLK — MII receive clock |
| 引脚 20 | RX_DV — MII receive data valid |
| 引脚 21 | RXD0 — MII receive data 0 |
| 引脚 22 | RXD1 — MII receive data 1 |
| 引脚 23 | RXD2 — MII receive data 2 |
| 引脚 24 | RXD3 — MII receive data 3 |
| 引脚 25 | RX_ER — MII receive error |
| 引脚 26 | CRS — Carrier sense |
| 引脚 27 | COL — Collision detected |
| 引脚 28 | VDD33D — Digital 3.3V supply |
| 引脚 29 | VSS33D — Digital ground |
| 引脚 30 | XI — Crystal oscillator input |
| 引脚 31 | XO — Crystal oscillator output |
| 引脚 32 | NC — Not connected (per datasheet) |
| 引脚 33 | NC — Not connected (per datasheet) |
| 引脚 34 | NC — Not connected (per datasheet) |
| 引脚 35 | NC — Not connected (per datasheet) |
| 引脚 36 | NC — Not connected (per datasheet) |
| 引脚 37 | NC — Not connected (per datasheet) |
| 引脚 38 | NC — Not connected (per datasheet) |
| 引脚 39 | NC — Not connected (per datasheet) |
| 引脚 40 | PAD — Exposed thermal pad (ground) |
典型应用
DP83848KSQ/NOPB 适用于 6 应用s: Industrial Ethernet Controllers, IP Cameras and Surveillance, IoT Gateways and Edge Devices, Building Automation Systems, Test and Measurement Equipment, Embedded Networking Modules.
Industrial Ethernet Controllers
The DP83848KSQ/NOPB is ideal for industrial Ethernet controllers requiring robust 10/100 Mbps connectivity on factory floors. Its industrial temperature range of -40C to +85C, Auto-MDIX support, and cable reach beyond 137 m of Cat-V make it well-suited for PLCs, motor drives, and industrial gateways. The WQFN-40 footprint fits compact embedded designs, while the MII/RMII interface connects to common industrial MCUs like TI's Sitara and ST's STM32. The device's adaptive equalizer and baseline wander correction ensure reliable data transmission in electrically noisy factory environments with motor drives and switching power supplies nearby.
推荐
IP Cameras and Surveillance
The DP83848KSQ/NOPB provides reliable 10/100 Mbps Ethernet connectivity for IP cameras and surveillance equipment. Its low power consumption extends PoE budget headroom for powered devices, while the Auto-MDIX feature simplifies installation regardless of cable type used. The PHY's robust EMI margin from integrated adaptive equalization and echo cancellation ensures stable video streaming even with marginal cable installations. For outdoor PoE cameras operating in -40C to +85C environments, the industrial temperature rating is essential. The WQFN-40 package allows compact camera housing designs while maintaining signal integrity on the MII interface to the image processor SoC.
推荐
IoT Gateways and Edge Devices
The DP83848KSQ/NOPB enables wired Ethernet backhaul for IoT gateways and edge devices that aggregate sensor data from multiple wireless nodes. The MII/RMII interface is compatible with common IoT processors, and the Auto-Negotiation feature automatically selects the highest link speed. The PHY's small 6x6 mm WQFN-40 footprint is critical for compact gateway enclosures, while its industrial temperature range supports outdoor and factory deployments. Combined with the 3.3V single-supply operation, the DP83848K simplifies power tree design in battery-backed edge nodes that occasionally connect to wired infrastructure for firmware updates and bulk data transfer.
推荐
Building Automation Systems
The DP83848KSQ/NOPB integrates into building automation systems including BACnet/IP controllers, HVAC smart thermostats, and access control panels requiring reliable wired Ethernet. Its industrial temperature grade ensures operation in unconditioned spaces like electrical closets and outdoor panels. The Auto-MDIX feature eliminates cabling errors during installation, reducing commissioning time and field service calls. The PHY's 264 mW typical active power consumption is acceptable for always-on building automation devices. The MII interface supports legacy building automation MCUs, while the device's compliance with IEEE 802.3u ensures interoperability with commercial Ethernet switches used in building management systems.
推荐
Test and Measurement Equipment
The DP83848KSQ/NOPB suits test and measurement equipment that requires deterministic Ethernet connectivity for remote control, data acquisition, and lab instrumentation networking. The PHY's MDIO management interface allows real-time link status monitoring, which is critical for test systems that need to detect cable faults or link degradation. The -40C to +85C industrial temperature rating supports lab and production floor environments. The 100 Mbps speed is sufficient for most test data uploads, and the WQFN-40 footprint allows integration into compact bench instruments. The device's cable reach beyond 137 m provides flexibility in test rack layouts across large laboratory spaces.
推荐
Embedded Networking Modules
The DP83848KSQ/NOPB is used in embedded networking modules such as SOM (System on Module) Ethernet companion chips and industrial router modules. Its single-port 10/100 capability and MII/RMII flexibility allow connection to various host processors in modular designs. The small WQFN-40 package enables compact module form factors while the industrial temperature rating supports harsh deployment scenarios. Combined with its low BOM requirements (only external magnetics and termination resistors), the DP83848K minimizes total system cost for high-volume embedded networking products. The PHY's proven interoperability ensures seamless connection with switches and routers in industrial networks.
推荐
推荐产品汇总
工程参考数据： DP83848KSQ/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 | DP83848JSQ/NOPB | DP83848QSQE/NOPB | DP83848TSQ/NOPB | DP83848CVVX/NOPB |
|---|---|---|---|---|---|
| Package | WQFN-40 (6x6 mm) | WQFN-40 (6x6 mm) - same | WQFN-40 (6x6 mm) - same | WQFN-40 (6x6 mm) - same | LQFP-48 - different |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Operating Temperature | -40C to +85C | 0C to +70C (commercial) | -40C to +105C (extended) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Data Rate | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps |
| Supply Voltage | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V |
| Auto-MDIX | Yes | Yes | Yes | Yes | Yes |
| MAC Interface | MII / RMII | MII / RMII | MII / RMII | MII / RMII | MII / RMII |
| Integrated Termination | No (external) | No (external) | No (external) | Yes (internal) | No (external) |
关键差异点
- Industrial temperature grade （对比 DP83848JSQ/NOPB)
- Standard 40-pin WQFN footprint （对比 DP83848HSQ/NOPB)
- No integrated termination （对比 DP83848TSQ/NOPB)
设计说明
Route the MII/RMII traces between the MAC and PHY as short as possible with matched lengths (within 50 mil for MII). Keep digital traces away from the analog TX/RX differential pairs and use a continuous ground plane under the MII bus. Place the 25 MHz crystal within 5 mm of the XI/XO pins with short traces and guard ring to ground. Decouple each VDD33A and VDD33D pin with a 0.1uF ceramic capacitor placed within 2 mm of the pin.
Do not omit the center-tap capacitors on the magnetics; these are required for proper PHY operation. Verify the isolation transformer ratio (1:1) matches the DP83848K requirements. Some early designs failed because designers used 1CT:1CT instead of 1:1 center-tapped magnetics. Also ensure proper 50 ohm termination on the cable-side differential pairs with appropriate common-mode termination to prevent reflections.
Maintain 100 ohm differential impedance on the TX and RX pairs routed to the magnetics. Use AC-coupling capacitors (0.1uF) on each differential pair if required by the magnetics vendor. Keep these traces symmetric and avoid crossing split ground planes. For EMI reduction, add common-mode chokes at the RJ45 connector side of the magnetics.
合规信息
RoHS and REACH compliant per TI product page. Not AEC-Q100 qualified - this is an industrial-grade PHY, not automotive grade.
