Microchip`s single-pair Ethernet PHY LAN8770 Offers the Industry’s Leading Ultra-low TC10-compliant Sleep Current and is Functional Safety Ready

Single-pair Ethernet PHY Offers the Industry’s Leading Ultra-low TC10-compliant Sleep Current and is Functional Safety Ready

 

 

Microchip Technology Inc. a leader in automotive Ethernet, today announced the LAN8770, an OPEN Alliance TC10 sleep standard Ethernet physical layer transceiver (PHY) with the industry’s lowest sleep currentless than 15 µA—which is around four times lower than other available devices.

The LAN8770 is a compact, cost-effective, single-port 100BASE-T1 Ethernet PHY compliant with the IEEE 802.3bw-2015 specification and available in a 5 x 5 mm or 6 x 6 mm wettable-flanks QFN package. The small package is ideal for space-constrained applications such as the infotainment head unit, telematics modules or Advanced Driver Assistance Systems (ADAS). It provides 100 Mbps transmit and receive capability over a single Unshielded Twisted Pair (UTP), exceeds automotive electromagnetic interference requirements and is Grade 1 (-40°C to +125°C) automotive AEC-Q100 qualified. In addition, the LAN8770 is Microchip Functional Safety Ready; it is specifically designed to simplify customers’ end-product ISO26262 safety certification with the support of specialized hardware safety features, Failure Modes, Effects, and Diagnostic Analysis (FMEDA) and safety manual.

The LAN8770M and LAN8770R support communication with an Ethernet MAC via standard MII/RMII and MII/RMII/RGMII interfaces, respectively. An optional 125 MHz or 50 MHz reference clock output is also provided for RGMII and RMII applications, often enabling elimination of an external reference clock.

 

Additional Features

  • Supports MII/RMII/RGMII interface with SMI management for rapid register access
  • OPEN Alliance TC10 support
  • FlexPWR® technology power management
  • Extended cable reach
  • Small footprint 32-pin VQFN (5 x 5 mm) and 36-pin VQFN (6 x 6 mm) with wettable flanks
  • Grade 1 Automotive (-40°C to +125°C) qualified
  • Fully integrated transmission line filtering
  • MII/RMII/RGMII drive strength adjust
  • 125MHz RGMII clock slew rate adjust
  • Ultra low-power sleep mode (typical 12uA)
  • Microchip Functional Safety Ready

 

Microchip’s LAN8770 EtherGREEN™ energy efficiency technology provides low-power operation along with ultra-low-power sleep and wake-up modes. Power efficiency is further enhanced with optional integrated linear regulator and Microchip’s flexPWR® technology for variable xMII and input/output supply voltages, providing flexible design options and more opportunities to save power.

 

Parametrics

Name Value
Description 100Base-T1 PHY Transceiver with TC10 support
Ethernet Bandwidth 10/100Mbps T1
LEDs 1
# of Ethernet Ports 1
Interface MII/RMII/RGMII
Temp. Range Min. (°C) -40
Temp. Range Max. (°C) 125
Automotive Yes
Copper Support Yes
Supply Voltage (V) 3.3
Internal Regular Yes
MAC I/O Voltage 1.8/2.5/3.3
Cable Diagnostics Yes
On-Chip Termination Yes

 

 

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