DP83848IVVX/NOPB - Industrial 10/100 Ethernet PHY | TI LQFP-48
料号： DP83848IVVX/NOPB ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.78 | $5.78 |
| 10 | $5.2 | $52.00 |
| 100 | $4.62 | $462.00 |
| 500 | $4.05 | $2,025.00 |
| 1,000 | $3.48 | $3,480.00 |
DP83848IVVX/NOPB 概述
An Ethernet PHY (physical layer transceiver) is the analog front-end that connects an MAC controller to the copper twisted-pair medium, performing encoding/decoding (MLT-3 for 100BASE-TX, Manchester for 10BASE-T), clock recovery, and adaptive equalization. PHYs sit at the bottom of the OSI physical layer and provide the digital baseband interface (MII/RMII/GMII) that links to the MAC. They are a sub-category of network interface ICs within the broader interface IC family, sitting between digital logic and the magnetics/connector of an Ethernet port.
Key features include 3.3 V single-supply operation, integrated 100BASE-TX DSP with adaptive equalization and baseline-wander correction, programmable LED status outputs, IEEE 802.3u auto-negotiation, and a hardware Energy Detect power-down mode. The DP83848IVVX/NOPB ships with the SNI (Serial Network Interface) and JTAG test access port enabled, which simplifies board-level test and field diagnostics in factory-automation equipment.
Architecturally, the part uses an DSP-based receive path with a 4B/5B/MLT-3 encoder-decoder and a PLL that recovers clock from inbound data. The integrated 1:1 turns-ratio magnetics interface and on-chip termination reduce external BOM count compared to legacy PHYs that required external termination networks, while the PT (LQFP-48) package gives a robust 0.5 mm pitch footprint suitable for industrial PCB assembly.
Typical applications include industrial Ethernet switches, programmable logic controllers (PLCs), factory-automation nodes, motion-control drives, and embedded gateways requiring -40C to +85C operation. The wide temperature range and JTAG access make the part particularly attractive in Industry-4.0 retrofits where deterministic connectivity and field serviceability are required.
When designing with this device, place the 50 ohm transmission-line impedance traces between PHY and magnetics to within 25 mm, and use the recommended 2 kV HBM-rated magnetics module to meet industrial ESD/Surge targets. Always verify the reference clock source stability, because MII jitter margins shrink as cable length approaches 100 m.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical layout notes not always aggregated in the manufacturer datasheet, so procurement and engineering teams can shortlist a known-good BOM faster.
直接替换替代料： DP83848IVVX/NOPB ——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：
DP83848IVV/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
DP83848CVVX/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
DP83848EVVX/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
DP83848YBX/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
KSZ8081RNBIA
✅ 直接替换📋 参考替代料（不在目录中）
DP83848IVVX/NOPB 规格参数
| Product Type | Ethernet PHY Transceiver (PHYTER) |
| 数据速率 | 10/100 Mbps |
| Standards | IEEE 802.3u (100BASE-TX, 10BASE-T) |
| Number of Drivers/Receivers | 1/1 |
| 电源电压 | 3.0 V to 3.6 V (single 3.3 V supply) |
| MAC Interface | MII / RMII / SNI |
| Auto-MDIX | Yes (crossover correction) |
| Auto-Negotiation | Yes (IEEE 802.3u) |
| 工作温度 | -40C to +85C (Industrial) |
| 封装 | 48-pin LQFP (PT), 7x7 mm body, 0.5 mm pitch |
| 安装类型 | Surface Mount |
| MSL 等级 | 2 (per JEDEC J-STD-020) |
| Energy Detect Power-Down | Yes |
| JTAG Test Access | Yes (1149.1 boundary scan) |
| Status LEDs | Programmable, 2 outputs |
| RoHS 状态 | Compliant |
DP83848IVVX/NOPB 引脚配置
| 引脚 1 | TX_CLK — MII transmit clock output |
| 引脚 2 | TX_EN — MII transmit enable |
| 引脚 3 | TXD_0 — MII transmit data bit 0 |
| 引脚 4 | TXD_1 — MII transmit data bit 1 |
| 引脚 5 | TXD_2 — MII transmit data bit 2 |
| 引脚 6 | TXD_3 — MII transmit data bit 3 |
| 引脚 7 | RX_CLK — MII receive clock output |
| 引脚 8 | RX_DV — MII receive data valid |
| 引脚 9 | RX_ER — MII receive error |
| 引脚 10 | RXD_0 — MII receive data bit 0 |
| 引脚 11 | RXD_1 — MII receive data bit 1 |
| 引脚 12 | RXD_2 — MII receive data bit 2 |
| 引脚 13 | RXD_3 — MII receive data bit 3 |
| 引脚 14 | CRS — Carrier sense |
| 引脚 15 | COL — Collision detect |
| 引脚 16 | MDIO — Management data I/O |
| 引脚 17 | MDC — Management data clock |
| 引脚 18 | RESET_n — Hardware reset (active low) |
| 引脚 19 | X1 — 25 MHz crystal / clock input |
| 引脚 20 | X2 — 25 MHz crystal feedback |
| 引脚 21 | LED_LINK — Link status LED (programmable) |
| 引脚 22 | LED_SPEED — Speed/status LED (programmable) |
| 引脚 23 | TX_P — Differential transmit output (positive) |
| 引脚 24 | TX_N — Differential transmit output (negative) |
| 引脚 25 | AVDD33 — Analog 3.3 V supply |
| 引脚 26 | AVSS — Analog ground |
| 引脚 27 | RX_P — Differential receive input (positive) |
| 引脚 28 | RX_N — Differential receive input (negative) |
| 引脚 29 | AGND — Analog ground reference |
| 引脚 30 | VCCIO — I/O supply (3.3 V) |
| 引脚 31 | TXD_4/RMII_TXD0 — MII TXD4 or RMII TXD0 (multiplexed) |
| 引脚 32 | TXD_5/RMII_TXD1 — MII TXD5 or RMII TXD1 (multiplexed) |
| 引脚 33 | TXD_6 — MII transmit data bit 6 (extended) |
| 引脚 34 | TXD_7 — MII transmit data bit 7 (extended) |
| 引脚 35 | RXD_4/RMII_RXD0 — MII RXD4 or RMII RXD0 (multiplexed) |
| 引脚 36 | RXD_5/RMII_RXD1 — MII RXD5 or RMII RXD1 (multiplexed) |
| 引脚 37 | RXD_6 — MII receive data bit 6 (extended) |
| 引脚 38 | RXD_7 — MII receive data bit 7 (extended) |
| 引脚 39 | TDI — JTAG test data in |
| 引脚 40 | TDO — JTAG test data out |
| 引脚 41 | TMS — JTAG test mode select |
| 引脚 42 | TCK — JTAG test clock |
| 引脚 43 | TRST_n — JTAG test reset (active low) |
| 引脚 44 | SNI_CLK — Serial Network Interface clock |
| 引脚 45 | SNI_DATA — Serial Network Interface data |
| 引脚 46 | RX_ER/SNI_EN — RX error or SNI enable (multiplexed) |
| 引脚 47 | DVDD33 — Digital 3.3 V supply |
| 引脚 48 | DVSS — Digital ground |
典型应用
DP83848IVVX/NOPB 适用于 6 应用s: Industrial Ethernet Switches, PLC and Factory Automation Nodes, Motion Control Drives, Embedded Gateway Devices, Building Automation Controllers, Industrial Sensor Aggregation Hubs.
Industrial Ethernet Switches
The DP83848IVVX/NOPB's -40C to +85C industrial temperature rating and integrated Auto-MDIX make it an ideal PHY for managed and unmanaged industrial Ethernet switches. Its 3.3 V single-supply operation simplifies power-tree design in 24 V-bus factory systems that step down to 3.3 V via a single buck regulator. The hardware-based cable diagnostics and JTAG test port provide production-line visibility into link quality and PCB continuity, which is critical for factory acceptance testing. With MII and RMII MAC interfaces, the PHY pairs naturally with managed switches from Microchip LAN969x or TI's own industrial MACs. Per TI's reference designs, this part delivers full 100 Mbps throughput up to 100 m Cat5 cable lengths at ambient temperatures up to 85C without thermal throttling, when the recommended magnetics module is used.
推荐
PLC and Factory Automation Nodes
Programmable logic controllers and remote I/O nodes benefit from the DP83848IVVX/NOPB's proven long-term availability and industrial temperature support. The PHY's deterministic 100BASE-TX DSP engine with adaptive equalization maintains stable links in electrically noisy environments with motor drives, VFDs, and welding equipment. The integrated Energy Detect power-down mode reduces quiescent current during idle periods, helping PLC nodes meet IEC 61131-2 power budgets. Engineers can leverage the MII interface to connect with TI C2000 or ARM Cortex-M4 MCUs that include Ethernet MAC peripherals. According to TI application notes, the part supports PROFINET, EtherNet/IP, and Modbus TCP protocols with appropriate firmware stacks running on the host processor.
推荐
Motion Control Drives
Servo drives and variable-frequency drives require deterministic Ethernet communication for real-time motion control. The DP83848IVVX/NOPB supports hardware time-stamping interfaces and works with EtherCAT, POWERLINK, and SERCOS III stacks via the MAC interface, when the host controller supports those protocols. Its -40C to +85C operating range handles the elevated ambient temperatures inside sealed drive enclosures where power semiconductors generate significant heat. Per TI datasheet, the PHY's sub-microsecond link-pulse detection ensures synchronization accuracy required for multi-axis coordinated motion. The robust ESD/surge tolerance (when paired with the recommended magnetics) meets IEC 61800-3 industrial EMC requirements for drive installations.
推荐
Embedded Gateway Devices
Industrial protocol gateways translating Modbus RTU, CAN, or serial to Ethernet use the DP83848IVVX/NOPB as their network interface. The PHY's RMII mode reduces pin count to just 10 MAC-side signals, freeing GPIO on small-footprint gateway MCUs. Combined with hardware TCP/IP offload stacks on Cortex-M4 platforms, the part delivers full 10/100 throughput without burdening the host MCU. The JTAG boundary-scan capability accelerates board-level test of high-volume gateway products. According to TI reference designs, the LQFP-48 (PT) package supports hand-soldering and rework, which simplifies prototyping in gateway product development.
推荐
Building Automation Controllers
BACnet/IP and LonWorks building automation systems rely on the DP83848IVVX/NOPB's industrial temperature grade and long-term supply commitment. HVAC controllers, lighting control panels, and security access panels deploy this PHY in environments like unconditioned electrical closets or rooftop equipment rooms where temperatures swing widely. The Auto-MDIX feature allows installers to use any cable type when wiring building systems, reducing installation errors. The part's 3.3 V operation is compatible with common building-automation 24 V to 3.3 V power architectures. According to TI's industrial PHY longevity program, this part is supported through 2030+, critical for long building lifecycle deployments.
推荐
Industrial Sensor Aggregation Hubs
Multi-sensor data acquisition hubs in industrial IoT deployments use the DP83848IVVX/NOPB to backhaul aggregated sensor data over Ethernet. The PHY's low active power (approximately 144 mW during 100BASE-TX) helps these typically-remote, sometimes-PoE-powered hubs manage thermal budgets. Its MII/RMII flexibility lets designers select host MCUs based on computational needs rather than interface constraints. Per TI's Industrial Ethernet PHY design guide, the part supports precision time protocol (PTP) hardware assist that enables sub-microsecond synchronization across distributed sensor networks. The exposed-pad package variant (DP83848YVB) is recommended for high-density hub designs with sustained 100 Mbps traffic.
推荐
推荐产品汇总
工程参考数据： DP83848IVVX/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 | DP83848IVV/NOPB | DP83848CVVX/NOPB | DP83848EVVX/NOPB | DP83848YBX/NOPB | KSZ8081RNBIA |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology |
| Package | LQFP-48 (PT) | LQFP-48 (PT) | LQFP-48 (PT) | LQFP-48 (PT) | LQFP-48 (PT) w/ Exposed Pad | QFN-24 |
| Data Rate | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| MAC Interface | MII / RMII / SNI | MII / RMII / SNI | MII / RMII / SNI | MII / RMII / SNI | MII / RMII / SNI | RMII only |
| Auto-MDIX | Yes | Yes | Yes | Yes | Yes | Yes |
| JTAG Support | Yes | Yes | Yes | Yes | Yes | No |
| Shipping Packaging | Tape & Reel (IVVX) | JEDEC Tray (IVV) | Tape & Reel (CVVX) | Tape & Reel (EVVX) | Tape & Reel (YBX) | Tray or Reel |
关键差异点
- Industrial temperature grade with full LQFP-48 footprint and JTAG （对比 DP83848CVVX/NOPB)
- Tape-and-reel shipping vs JEDEC tray for high-volume assembly （对比 DP83848IVV/NOPB)
- Full MII/RMII/SNI interface flexibility with JTAG access （对比 KSZ8081RNBIA)
设计说明
Maintain 100 ohm differential impedance (typical 90 ohm nominal for Ethernet) on TX_P/TX_N and RX_P/RX_N traces between PHY and magnetics module. Trace length should be matched within 2 mm on each differential pair. Place the 50 ohm termination resistor network within 25 mm of the PHY pins, and use a continuous ground plane beneath all high-speed traces to control return paths. Reference TI's AN-2183 layout application note for the recommended stack-up.
Decouple each AVDD33 and DVDD33 pin with a 0.1 uF X7R ceramic capacitor placed within 3 mm of the pin. Add a bulk 10 uF tantalum or ceramic capacitor near the supply entry point. Per the datasheet, separate analog and digital grounds should be tied at a single point beneath the PHY to avoid ground loops. A ferrite bead on the analog supply rail further improves PSRR for noise-sensitive applications.
Route the 25 MHz X1/X2 crystal traces as short as possible and symmetric, with no other signals crossing them. Use a fundamental-mode crystal with +/-50 ppm accuracy for 100BASE-TX compliance. If an external oscillator is used instead of a crystal, drive X1 from the oscillator and leave X2 floating. Shield the crystal traces with a ground pour to prevent coupling from switching signals on the MII bus.
In a typical 100BASE-TX active link, the DP83848IVVX/NOPB dissipates approximately 144 mW, which is well within the LQFP-48 thermal rating for industrial temperatures without a heatsink. Estimated junction temperature rise at +85C ambient with 144 mW and theta_JA around 60 C/W (4-layer PCB) is about 9C above ambient. For sealed enclosures with poor airflow, consider the DP83848YBV variant with exposed thermal pad.
Do not connect the magnetics center tap to PHY ground directly; follow the magnetics vendor's reference design, typically tying center taps to the PHY-side supply via a ferrite bead. Avoid using RJ45 jacks with built-in magnetics rated for commercial temperature only; choose industrial-rated (-40C to +85C) jacks such as the Belfuse 0826 series. Mis-terminated center taps are the leading cause of 100BASE-TX link failures.
合规信息
NOPB suffix indicates lead-free, RoHS-compliant assembly per TI part numbering. Not AEC-Q100 qualified (this is industrial, not automotive grade). Reach SVHC declaration available on TI product page.
