LAN8670B1-E/LMX Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
The LAN8670B1-E/LMX is a single-port 10BASE-T1S Ethernet transceiver from Microchip supporting 10 Mbps half/full-duplex over a single twisted pair. It integrates PHY and PCS in a compact 32-VQFN package with 3.3 V supply.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 33
- Lifecycle
- OBSOLETE
- Datasheet
- LAN8670B1-E/LMX Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 10BASE-T1S single-pair Ethernet PHY supporting up to 10 Mbps data rate in a compact 32-VQFN 5x5 mm package
- Supports both half-duplex and full-duplex operation for flexible automotive and industrial network topologies
- 3.3 V supply voltage with integrated PCS and PMD layers for simplified board design and reduced BOM
Applications
The LAN8670B1-E/LMX is well-suited for automotive in-vehicle networking applications such as body control modules and sensor nodes requiring 10BASE-T1S single-pair Ethernet connectivity. It also fits industrial automation edge devices and smart building systems where low-cost, low-bandwidth wired Ethernet over a single unshielded pair simplifies cabling. Its compact 32-VQFN footprint makes it ideal for space-constrained IoT gateway and embedded controller designs.
Specifications
| YTEOL | 0 |
| Data Rate | 10000Mbps |
| JESD-30 Code | S-PQCC-N32 |
| Number of Functions | 1 |
| Number of Transceivers | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC32,.2SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Telecom IC Type | ETHERNET TRANSCEIVER |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What data rate does the LAN8670B1-E/LMX support and over what physical medium?
The LAN8670B1-E/LMX supports 10 Mbps data rate over a single twisted pair as defined by the 10BASE-T1S standard, enabling low-cost Ethernet wiring in automotive and industrial environments without needing multiple conductors.
Which automotive or industrial network topologies can the LAN8670B1-E/LMX support at 3.3 V?
Operating from a 3.3 V supply, the LAN8670B1-E/LMX supports both half-duplex multidrop bus topologies and point-to-point full-duplex links, making it versatile for automotive body networks (up to 8 nodes on a bus) and industrial sensor clusters.
How does the 32-VQFN package size of the LAN8670B1-E/LMX affect PCB layout in space-constrained designs?
The 32-VQFN measures only 5x5 mm with a 0.5 mm pitch, allowing designers to fit the complete 10BASE-T1S PHY within a very compact PCB area of under 25 mm², which is critical for small sensor nodes or ECU sub-boards with tight space constraints.
Is the LAN8670B1-E/LMX a suitable alternative to CAN transceivers for automotive sensor networks?
Yes, for sensor networks requiring IP-based communication, the LAN8670B1-E/LMX offers 10 Mbps Ethernet bandwidth over a single pair—significantly higher throughput than classic CAN at 1 Mbps—while using a similarly simple 2-wire bus topology, making it a strong candidate for next-generation automotive sensor nodes.
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