DP83TG720SWRHARQ1 - 1000BASE-T1 Automotive Ethernet PHY
MPN: DP83TG720SWRHARQ1 ✓ ActiveDP83TG720SWRHARQ1 Overview
An automotive Ethernet PHY is the physical-layer component that converts digital MAC data into signals suitable for a single twisted-pair cable and converts received cable signals back into digital data. The PHY sits between an automotive Ethernet MAC or microcontroller and the vehicle network. Within the broader hierarchy, it is an Ethernet transceiver, an interface IC, and a semiconductor designed for in-vehicle networking infrastructure.
The DP83TG720SWRHARQ1 provides the physical-layer functions required to transmit and receive data over unshielded or shielded single twisted-pair cables. Its RGMII and SGMII support gives a system designer flexibility when connecting the PHY to different automotive Ethernet MAC interfaces. The part is also identified as compliant with IEEE 802.3bp and Open Alliance requirements, including automotive Ethernet EMC compliance.
A key architectural benefit is the ability to use one PCB design across two automotive Ethernet speeds. The DP83TG720 family is described as a pin-compatible drop-in replacement for TI’s 100BASE-T1 PHY, allowing a platform to support 100BASE-T1 and 1000BASE-T1 implementations without changing the printed-circuit-board footprint. This scalability is particularly valuable for shared vehicle electrical architectures that must serve multiple ECU generations or network bandwidth tiers.
Typical automotive Ethernet applications include electronic control units, advanced driver-assistance systems, vehicle domain controllers, infotainment platforms, body and comfort controllers, gateways, and telematics units. In each case, the PHY can connect an RGMII- or SGMII-based host processor to a 1000BASE-T1 single-pair network while providing a common automotive software-control interface.
The main PCB design consideration is high-speed differential routing. The 36-pin VQFN requires a compact, symmetric single-pair Ethernet layout, with the cable-side network and magnetics interface placed according to the manufacturer’s reference layout. Power and signal-return paths also need careful partitioning so switching activity from the digital interface does not degrade the cable-side signal.
This page organizes the device’s function, automotive Ethernet positioning, verified electrical identity, family alternatives, application guidance, and PCB considerations. It also distinguishes confirmed pin-compatible family options from broader functional alternatives so engineers can evaluate PCB reuse without confusing protocol similarity with exact drop-in compatibility.
Drop-in alternatives for DP83TG720SWRHARQ1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DP83TG720SWRHARQ1 (same form factor and footprint) — differing in Product Type, Automotive Qualification, Open Alliance Compliance, Package.
DP83TG720SWRHATQ1
✅ Drop-InContact for price
View Datasheet →DP83TG720RWRHARQ1
✅ Drop-InContact for price
View Datasheet →DP83TG720RWRHATQ1
✅ Drop-InContact for price
View Datasheet →DP83TG720SWRHAR01
✅ Drop-In📋 Reference alternative (not in catalog)
DP83TG720SWRHAT01
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DP83TG720SWRHARQ1 Specifications
| Product Type | 1000BASE-T1 automotive Ethernet physical-layer transceiver |
| Ethernet Speed | 1000BASE-T1 |
| Channel Count | 1 channel |
| Duplex Mode | Full duplex |
| MAC Interface | RGMII and SGMII |
| Cable Medium | Shielded or unshielded single twisted-pair cable |
| IEEE Standard | IEEE 802.3bp |
| Open Alliance Compliance | Compliant |
| Automotive EMC Compliance | Open Alliance EMC compliant |
| Supply Voltage Options | 1.8 V, 2.5 V, or 3.3 V |
| Automotive Qualification | AEC-Q100 |
| Package | 36-pin VQFN, 6 mm x 6 mm |
| Mounting Type | Surface mount |
| Shipping Format | Tape and reel |
| Diagnostic Support | Real-time monitoring, debugging tools, and test modes |
DP83TG720SWRHARQ1 36-pin vqfn, 6 mm x 6 mm Pin Configuration Guide
Pin configuration for DP83TG720SWRHARQ1 (36-pin vqfn, 6 mm x 6 mm package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for DP83TG720SWRHARQ1.
Refer to the datasheet for full pin configuration.
Typical Applications
DP83TG720SWRHARQ1 is suitable for 6 applications: Automotive Domain Controller, Advanced Driver-Assistance System, Vehicle Body Controller, Automotive Infotainment Head Unit, Automotive Ethernet Gateway, Telematics Control Unit.
Automotive Domain Controller
DP83TG720SWRHARQ1 fits a domain controller that connects a high-performance host processor to a 1000BASE-T1 vehicle network. Its 1000BASE-T1 capability supports higher bandwidth than a 100BASE-T1-only design, while RGMII or SGMII selection lets the board match the processor interface architecture. The 36-pin 6 mm by 6 mm VQFN also keeps the PHY compact, although high-speed single-pair routing and the exposed thermal pad still require careful layout. For platforms that may migrate between 100BASE-T1 and 1000BASE-T1, the TI family’s pin-compatible scaling can simplify board reuse.
Recommended
Advanced Driver-Assistance System
DP83TG720SWRHARQ1 is suitable for the Ethernet link between an ADAS controller and cameras, radar nodes, or other high-bandwidth vehicle sensors. A 1000BASE-T1 single-pair interface can carry sensor data over an automotive Ethernet network while leaving board space for compute and memory components. RGMII and SGMII host-interface support permits integration with processors using parallel or serial MAC connections. The design must use controlled-impedance differential routing, a compliant automotive Ethernet magnetic interface, and verified isolation or filtering strategies where required by the vehicle architecture.
Recommended
Vehicle Body Controller
DP83TG720SWRHARQ1 can add 1000BASE-T1 connectivity to a body or comfort controller that coordinates lighting, doors, climate equipment, or seat functions. The higher-speed PHY option allows a common electronic architecture to combine service-oriented traffic with legacy 100BASE-T1 nodes when appropriate. Its compact 36-pin VQFN footprint supports dense ECU layouts, and its diagnostic toolkit helps commissioning teams observe link status and run physical-layer tests. Firmware must configure the MAC interface, cable-side network, clocking, and automotive diagnostics before the controller enters production validation.
Recommended
Automotive Infotainment Head Unit
DP83TG720SWRHARQ1 provides a 1000BASE-T1 physical layer for infotainment head units that exchange compressed video, audio, and control traffic with vehicle Ethernet networks. Its RGMII and SGMII interfaces allow selection according to the host processor and internal clock architecture, while one full-duplex 1000BASE-T1 channel supports high-speed network communication over a single pair. The PHY should be placed near the cable connector and magnetic network to minimize differential loss and keep sensitive high-speed traces short and symmetric.
Recommended
Automotive Ethernet Gateway
DP83TG720SWRHARQ1 is appropriate for a gateway intended to bridge multiple vehicle Ethernet domains while providing a common path between 100BASE-T1 and 1000BASE-T1 equipment. The TI family’s pin-compatible relationship to its 100BASE-T1 PHY supports platform scalability without relocating the connector and PHY landing pattern. RGMII or SGMII connectivity can connect the PHY to the gateway processor, depending on throughput and board constraints. Administrators still need to verify protocol timing, automotive network management, wake-up behavior, and cable-side magnetic components for each supported speed.
Recommended
Telematics Control Unit
DP83TG720SWRHARQ1 can serve as the 1000BASE-T1 network interface in a telematics control unit connecting a communications module to the vehicle backbone. A single-pair Ethernet connection offers a practical path to higher data throughput without requiring multiple conductors, while RGMII or SGMII gives flexibility in processor selection. In a compact TCU layout, the exposed-pad thermal requirement and cable-side component placement can significantly influence routing. Production validation should include EMC behavior, link margin, temperature operation, and recovery from cable faults or network interruptions.
Recommended
Recommended Products Summary
Engineering reference data for DP83TG720SWRHARQ1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DP83TG720SWRHATQ1 | DP83TG720RWRHARQ1 | DP83TG720RWRHATQ1 | DP83TG720SWRHAR01 | DP83TG720SWRHAT01 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | VQFN-36 (6x6) | VQFN-36 (6x6) - same | VQFN-36 (6x6) - same | VQFN-36 (6x6) - same | VQFN-36 (6x6) - same | VQFN-36 (6x6) - same |
| Ethernet Speed | 1000BASE-T1 | 1000BASE-T1 | 1000BASE-T1 | 1000BASE-T1 | 1000BASE-T1 | 1000BASE-T1 |
| Channel Count | 1 channel | 1 channel | 1 channel | 1 channel | 1 channel | 1 channel |
| MAC Interface | RGMII and SGMII | RGMII and SGMII | RGMII and SGMII | RGMII and SGMII | RGMII and SGMII | RGMII and SGMII |
| Cable Support | Shielded or unshielded single twisted pair | Shielded or unshielded single twisted pair | Shielded or unshielded single twisted pair | Shielded or unshielded single twisted pair | Shielded or unshielded single twisted pair | Shielded or unshielded single twisted pair |
Key Differentiators
- Supports 1000BASE-T1 while preserving a path to shared 100BASE-T1 board designs (vs DP83TG720SWRHATQ1)
- Offers both parallel and serial host connectivity (vs DP83TG720RWRHARQ1)
- Combines automotive EMC alignment with production diagnostics (vs DP83TG720RWRHATQ1)
Design Notes
Route the 1000BASE-T1 differential pair as a controlled-impedance, tightly coupled pair with symmetric length and geometry from the PHY through the magnetic network toward the connector. Keep the pair as short as practical and preserve the reference-plane reference from the manufacturer layout. Do not route digital RGMII or SGMII signals beneath the cable-side pair or split the differential pair around unrelated circuitry, because asymmetry can reduce EMC margin and link reliability.
Place the PHY, decoupling capacitors, clock components, and cable-side network according to the manufacturer reference layout. Keep the 36-pin VQFN exposed thermal pad connected to the required ground and thermal-via structure, and keep high-current or high-di/dt paths away from the sensitive cable-side pins. Confirm capacitor voltage ratings, DC-bias behavior, and placement directly against the TI application circuit before releasing the PCB.
Treat the RGMII or SGMII interface as a high-speed digital interface requiring correct clock topology, controlled-impedance routing, and clean return paths. Check edge-rate content and crosstalk at the PHY and host-device pins, especially when the two devices connect through a connector or long PCB trace. Use the manufacturer timing and reference-layout guidance as the controlling source for trace geometry, termination, and interface configuration.
Do not select a replacement solely because its Ethernet speed or package count appears similar. Verify the decoded ordering suffix, temperature grade, automotive qualification, RGMII or SGMII configuration, clock requirements, supply sequencing, reset behavior, cable-side network, and exposed-pad layout. The DP83TG720 family is intended to support pin-compatible scaling, but a production substitution still requires a complete schematic, firmware, EMC, and link-margin comparison.
Compliance Information
The manufacturer identifies the DP83TG720SWRHARQ1 as an AEC-Q100-qualified automotive Ethernet PHY and states IEEE 802.3bp and Open Alliance EMC compliance. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status require confirmation for the exact orderable MPN.
