LTM2889 µModule® Transceiver

Linear Technology's LTM2889 is a complete galvanically isolated CAN µModule transceiver with improved system reliability

Image of Linear Technology's LTM2889 µModule TransceiverLinear Technology's LTM2889 is a complete galvanically isolated controller area network (CAN) μModule (micromodule) transceiver. No external components are required; a single supply powers both sides of the interface through an integrated, isolated DC/DC converter. Separate versions are available for 3.3 V and 5 V power supplies. The dual voltage CAN transceiver and the adjustable regulator allow 3.3 V or 5 V isolated power with either the 3.3 V or 5 V version. Coupled inductors and an isolation power transformer provide 2500 VRMS of isolation between the line transceiver and the logic interface. This device is ideal for systems where the ground loop is broken, allowing for large common mode voltage ranges. Communication remains uninterrupted for common mode transients greater than 30 kV/μs. It supports up to 4 Mbps CAN with flexible data rate (CAN FD). A logic supply pin allows easy interfacing with different logic levels from 1.62 V to 5.5 V, independent of the main supply. Enhanced ESD protection allows this part to withstand up to ±25 kV human body model (HBM) on the transceiver interface pins and ±10 kV HBM across the isolation barrier without latch-up or damage.

Image of Linear Technology's LTM2889 µModule Transceiver Schematic

Features
  • Isolated 4 Mbps CAN FD transceiver
  • 2500 VRMS for 1 minute per UL1577
  • Isolated DC power: 5 V (adjustable to 3.3 V)
  • Up to 150 mA available isolated power output
  • 3.3 V or 5 V input supply voltage options
  • UL-CSA recognition pending
  • No external components required
  • High bus fault voltage tolerance: ±60 V
  • Low power OFF mode: <1 µA typical
  • High common mode transient immunity: 30 kV/µs
  • Variable slew rate driver with active symmetry control and SPLIT pin for low EME
  • Fully ISO 11898-2 and CAN FD compliant
  • Ideal passive behavior to CAN bus with supply off
  • Transmit data (TXD) dominant timeout function
  • High ESD: ±25 kV CANH, CANL to GND2 and VCC2; ±10 kV across isolation barrier
  • Ambient operation from -40°C to 125°C
  • Low profile 15 mm x 11.25 mm BGA package
Applications
   
  • Isolated CAN bus interfaces
  • Industrial networks
 
  • DeviceNet applications

LTM2889 µModule Transceiver

ImageManufacturer Part NumberDescriptionAvailable Quantity
LTM2889CY-5#PBF datasheet linkDGTL ISO 2.5KV 2CH CAN 32BGALTM2889CY-5#PBFDGTL ISO 2.5KV 2CH CAN 32BGA119 - Immediate
LTM2889CY-5#PBF product page link
LTM2889HY-3#PBF datasheet linkDGTL ISO 2.5KV 2CH CAN 32BGALTM2889HY-3#PBFDGTL ISO 2.5KV 2CH CAN 32BGA115 - Immediate
LTM2889HY-3#PBF product page link
LTM2889CY-3#PBF datasheet linkDGTL ISO 2.5KV 2CH CAN 32BGALTM2889CY-3#PBFDGTL ISO 2.5KV 2CH CAN 32BGA50 - Immediate
LTM2889CY-3#PBF product page link
LTM2889HY-5#PBF datasheet linkDGTL ISO 2.5KV 2CH CAN 32BGALTM2889HY-5#PBFDGTL ISO 2.5KV 2CH CAN 32BGA83 - Immediate
LTM2889HY-5#PBF product page link
LTM2889IY-3#PBF datasheet linkDGTL ISO 2.5KV 2CH CAN 32BGALTM2889IY-3#PBFDGTL ISO 2.5KV 2CH CAN 32BGA0LTM2889IY-3#PBF product page link
LTM2889IY-5#PBF datasheet linkDGTL ISO 2.5KV 2CH CAN 32BGALTM2889IY-5#PBFDGTL ISO 2.5KV 2CH CAN 32BGA0LTM2889IY-5#PBF product page link

Demo Boards

ImageManufacturer Part NumberDescriptionUtilized IC / PartAvailable Quantity
DC1903A-B datasheet linkDEMO BOARD FOR LTM2889-5DC1903A-BDEMO BOARD FOR LTM2889-5LTM2889-59 - Immediate
DC1903A-B product page link
DC1903A-A datasheet linkDEMO BOARD FOR LTM2889-3DC1903A-ADEMO BOARD FOR LTM2889-3LTM2889-35 - Immediate
DC1903A-A product page link
Published: 2017-01-19