DP83848IVV - 10/100 Ethernet PHY Transceiver | Texas Instruments
MPN: DP83848IVV ✓ Hoạt độngDP83848IVV Tóm tắt
An Ethernet PHY (Physical Layer Device) is a transceiver IC that sits between a MAC controller and the copper media (twisted pair), handling analog line driving/receiving, clock recovery, link monitoring, and 10BASE-T/100BASE-TX encoding/decoding. PHYTERs are a category of Ethernet PHYs that emphasize robust industrial-grade operation, sitting within the broader Ethernet controller hierarchy: PHY -> transceiver -> network interface device -> communication IC -> semiconductor.
Key features of the DP83848IVV include integrated 100BASE-TX/FX physical coding sublayer (PCS) and physical media attachment (PMA), 3.3V single-rail operation with 2.5V internal LDO, Auto-MDIX crossover detection, Energy Detect Plus power-down modes, and 4 kV ESD tolerance on the MDI pins. The device also features low-latency (sub-100ns) MII throughput, hardware pause-frame support for flow control, and an IEEE 1149.1 JTAG boundary-scan port for board test. The 48-LQFP package provides a thermally efficient surface-mount footprint with 31.4 C/W typical junction-to-ambient resistance.
Architecture-wise, the DP83848IVV combines a DSP-based receive path with adaptive equalization to recover signals over >150m of CAT-5 cable, a 125 MHz PLL for 100BASE-TX clocking, and a 25 MHz crystal interface or external clock input. Internal voltage regulation simplifies power tree implementation by accepting a single 3.3V supply.
The DP83848IVV is designed for industrial Ethernet nodes, factory automation controllers, motor drives with EtherCAT/PROFINET bridges, building-automation gateways, IP-based surveillance cameras, and any embedded MCU/MPU with MII/RMII needing 10/100 connectivity. Its -40C to +85C industrial temperature grade supports deployment in harsh environments.
When designing with the DP83848IVV, follow TI's reference layout for the magnetics and 49.9 ohm 1% termination resistors as specified in the datasheet application section. Use a 25 MHz crystal or feed a clean external CMOS clock; keep the MDI traces length-matched within 50 mils and 100-ohm differential-impedance controlled for best EMI margin.
Bộ thay thế dễ dàng lắp đặt cho DP83848IVV — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với DP83848IVV (cùng hình factor và footprint) — khác nhau ở Auto-MDIX, Auto-Negotiation, MAC Interface, Operating Temperature, Package.
DP83848CVV/NOPB
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DP83848EVV/NOPB
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DP83848IVV/NOPB
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DP83848IVV Thông số kỹ thuật
| Product Type | Ethernet PHY Transceiver |
| Tốc độ dữ liệu | 10/100 Mbps |
| Standards | IEEE 802.3u, IEEE 802.3 |
| Number of Ports | 1 |
| MAC Interface | MII / RMII |
| Điện áp cung cấp | 3.3 V |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 48-LQFP (7x7 mm) |
| Auto-MDIX | Yes |
| Auto-Negotiation | Yes |
| Power-Down Modes | Energy Detect Plus |
| JTAG Support | IEEE 1149.1 |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant (NOPB suffix) |
Cấu hình chân DP83848IVV
| Chân 1 | TXD0 — Transmit Data bit 0 (MII) |
| Chân 2 | TXD1 — Transmit Data bit 1 (MII) |
| Chân 3 | TXD2 — Transmit Data bit 2 (MII) |
| Chân 4 | TXD3 — Transmit Data bit 3 (MII) |
| Chân 5 | TX_EN — Transmit Enable (MII) |
| Chân 6 | TX_CLK — Transmit Clock 25 MHz output (MII) |
| Chân 7 | TX_ER — Transmit Coding Error (MII) |
| Chân 8 | COL — Collision Detect (MII) |
| Chân 9 | RXD0 — Receive Data bit 0 (MII) |
| Chân 10 | RXD1 — Receive Data bit 1 (MII) |
| Chân 11 | RXD2 — Receive Data bit 2 (MII) |
| Chân 12 | RXD3 — Receive Data bit 3 (MII) |
| Chân 13 | RX_DV — Receive Data Valid (MII) |
| Chân 14 | RX_CLK — Receive Clock 25 MHz output (MII) |
| Chân 15 | RX_ER — Receive Error (MII) |
| Chân 16 | CRS — Carrier Sense (MII) |
| Chân 17 | MDC — Management Data Clock |
| Chân 18 | MDIO — Management Data I/O |
| Chân 19 | RESET_N — Hardware Reset (active-low) |
| Chân 20 | X1 — 25 MHz Crystal In |
| Chân 21 | X2 — 25 MHz Crystal Out |
| Chân 22 | LED0/PHYAD0 — LED 0 / PHY Address strap |
| Chân 23 | LED1/PHYAD1 — LED 1 / PHY Address strap |
| Chân 24 | LED2/PHYAD2 — LED 2 / PHY Address strap |
| Chân 25 | LED3/AN0 — LED 3 / Auto-Neg strap |
| Chân 26 | LED4/AN1 — LED 4 / Auto-Neg strap |
| Chân 27 | NC — Not connected (per datasheet) |
| Chân 28 | TD+ — Differential transmit positive |
| Chân 29 | TD- — Differential transmit negative |
| Chân 30 | NC — Not connected (per datasheet) |
| Chân 31 | RD+ — Differential receive positive |
| Chân 32 | RD- — Differential receive negative |
| Chân 33 | NC — Not connected (per datasheet) |
| Chân 34 | GND — Ground (substrate) |
| Chân 35 | AVDD33 — Analog 3.3V supply |
| Chân 36 | AGND — Analog ground |
| Chân 37 | AVDD25 — Analog 2.5V internal LDO output (bypass cap) |
| Chân 38 | NC — Not connected (per datasheet) |
| Chân 39 | NC — Not connected (per datasheet) |
| Chân 40 | DVDD33 — Digital 3.3V supply |
| Chân 41 | DGND — Digital ground |
| Chân 42 | TDI — JTAG Test Data In |
| Chân 43 | TDO — JTAG Test Data Out |
| Chân 44 | TMS — JTAG Test Mode Select |
| Chân 45 | TCK — JTAG Test Clock |
| Chân 46 | TRST_N — JTAG Test Reset (active-low) |
| Chân 47 | RBIN — Reduced MII mode select strap |
| Chân 48 | IOVDD33 — I/O 3.3V supply (separate pin for noise isolation) |
Ứng dụng tiêu biểu
DP83848IVV phù hợp cho 6 Áp dụngs: Industrial Ethernet Nodes, Motor Drives with EtherCAT/PROFINET Bridges, IP Surveillance Cameras, Building Automation Gateways, Embedded Routers / IoT Gateways, Test & Measurement Equipment.
Industrial Ethernet Nodes
The DP83848IVV's -40C to +85C industrial temperature grade and 48-LQFP compact footprint make it ideal for factory-floor PLCs and remote I/O blocks requiring 10/100 Ethernet connectivity. Its integrated Auto-MDIX eliminates crossover-cable mistakes by technicians in field installations. Placed between an MCU/MAC and the RJ45 magnetics, it provides 100 m CAT-5 reach with on-die adaptive equalization that recovers signals cleanly in electrically noisy cabinet environments. The 3.3V single-rail operation simplifies power-tree design on 24V-input industrial boards.
Được đề xuất
Motor Drives with EtherCAT/PROFINET Bridges
Industrial servo drives and variable-frequency motor drives need 10/100 Ethernet to host PLCs over EtherCAT, PROFINET, or Ethernet/IP. The DP83848IVV supports these protocols via the MII interface to protocol-specific MAC ASICs from Beckhoff, Siemens, or HMS. Its industrial temperature rating ensures stable operation in sealed drive enclosures reaching 70C+. The 48-LQFP-7x7 fits within typical 50x80mm motor control boards, leaving room for IGBT/MOSFET power components nearby.
Được đề xuất
IP Surveillance Cameras
Outdoor PoE-powered IP cameras need a robust 10/100 PHY operating in -40C ambient temperature extremes. The DP83848IVV's industrial temperature grade and Auto-MDIX simplify installation, while its energy-detect power-down mode enables <100 mW standby consumption. Placed between the image sensor SoC's MAC and the RJ45 jack, it streams 1080p30 H.264/265 video at 100 Mb/s with sub-100-ns MII latency. The 48-LQFP package provides thermal headroom for sealed IP67 housings without additional heatsinking.
Được đề xuất
Building Automation Gateways
BACnet/IP, KNXnet/IP, and Modbus-TCP building-automation gateways require reliable 10/100 Ethernet in ceiling-mounted enclosures. The DP83848IVV's Auto-MDIX eliminates wiring mistakes in field installations by contractors unfamiliar with crossover cables. Its 3.3V single-supply operation simplifies power design on shared 24V building rails, and the 48-LQFP package with 7x7 mm footprint fits in compact DIN-rail gateway housings. JTAG support enables boundary-scan verification during board bring-up for reliable multi-year deployments.
Được đề xuất
Embedded Routers / IoT Gateways
Edge routers and IoT gateways with 10/100 WAN/LAN ports benefit from the DP83848IVV's low-latency MII throughput and hardware pause-frame flow control. The device pairs naturally with embedded Linux MCUs (i.MX RT, AM335x) for OpenWrt-based routers. Its energy-detect power-down reduces idle consumption below 50 mW when the cable is unplugged, critical for energy-star IoT products. The integrated 2.5V LDO saves the cost of an external regulator on space-constrained gateway boards.
Được đề xuất
Test & Measurement Equipment
Lab instruments such as oscilloscopes, spectrum analyzers, and protocol analyzers need reliable LXI-compliant 10/100 Ethernet connectivity for SCPI remote control. The DP83848IVV's IEEE 1149.1 JTAG interface simplifies board boundary-scan testing during manufacturing test, and its hardware pause-frame support enables lossless capture streaming. Placed between an FPGA MAC and the rear-panel RJ45 jack, it provides 100 Mb/s throughput sufficient for waveform upload in <2 seconds for typical 100 MB acquisitions.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DP83848IVV — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | DP83848CVV/NOPB | DP83848EVV/NOPB | DP83848IVV/NOPB |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same |
| Data Rate | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +105C (Extended) | -40C to +85C (Industrial) |
| MAC Interface | MII / RMII | MII / RMII | MII / RMII | MII / RMII |
| Supply Voltage | 3.3V | 3.3V | 3.3V | 3.3V |
| Auto-MDIX | Yes | Yes | Yes | Yes |
| RoHS Compliant | With /NOPB suffix | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Wider industrial temperature grade (vsDP83848CVV/NOPB)
- Lower cost vs extended-temperature E variant (vsDP83848EVV/NOPB)
- Most widely stocked DP83848 grade (vsDP83848IVV/NOPB)
Ghi chú thiết kế
Follow TI's reference layout for the DP83848IVV: place the 49.9 ohm 1% termination resistors within 5 mm of the TD+/TD- and RD+/RD- pins. The differential MDI traces must be 100-ohm differential impedance and length-matched within 50 mils for IEEE 802.3u compliance. Keep analog and digital ground planes separated and join only at the EPAD ground pins. Use a 4-layer stack-up with a continuous ground plane beneath the device for best EMI performance.
Bypass each supply pin (AVDD33, DVDD33, IOVDD33) with a 0.1 uF X7R ceramic capacitor within 2 mm of the pin. Add a 10 uF bulk tantalum or ceramic at the device's main supply input. The internal 2.5V LDO requires a 0.1 uF + 10 uF bypass cap on the AVDD25 pin for PLL clean operation. Use a ferrite bead between digital and analog 3.3V rails to isolate switching noise.
Do not omit the 25 MHz crystal or external CMOS clock on X1/X2 - the PHYTER has no internal oscillator. Strapping pins (PHYAD, RBIN, AN) are read only at hardware reset; do not drive them with active signals during reset. Auto-MDIX requires Auto-Negotiation to be enabled. For fiber-only FX applications, choose the DP83848VF variant instead - the IVV supports FX only when the MDI pins are properly reconfigured via the FXD strap.
Thông tin tuân thủ
RoHS/REACH compliant only with /NOPB suffix. Standard DP83848IVV (without NOPB) is non-RoHS. Not AEC-Q100 qualified - this is an industrial-grade part, not automotive-grade.