LTM2894

PRODUCTION

Isolated USB Data Transceiver

Data Sheet (Rev. A) Product Selection Table
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Overview

  • Isolated USB Transceiver: 7500VRMS for 1 Minute
  • UL-CSA Recognition Pending
  • Reinforced Insulation
  • USB 2.0 Full Speed and Low Speed Compatible
  • Auto-Configuration of Bus Speed
  • 4.4V to 36V VBUS and VBUS2 Operating Range
  • 3.3V LDO Output Supply Signal References VLO and VLO2
  • 50kV/μs Common Mode Transient Immunity
  • ±20kV HBM ESD: on USB Interface Pins
  • 1414VPEAK Maximum Continuous Working Voltage
  • 17.4mm Creepage Distance
  • 22mm × 6.25mm Surface Mount BGA

The LTM2894 is a complete galvanically-isolated USB 2.0 compatible μModule® (micromodule) transceiver.

The LTM2894 is ideal for isolation in host, hub, bus splitter or peripheral device applications. It is compatible with USB 2.0 full speed (12Mbps) and low speed (1.5Mbps) operation. Automatic speed selection configures integrated pull-up resistors on the upstream port to match those sensed on the downstream device.

The isolator μModule technology uses coupled inductors to provide 7500VRMS of isolation and 17.4mm of creepage between the upstream and downstream USB interface. This device is ideal for systems requiring isolated ground returns or large common mode voltage variations. Uninterrupted communication is guaranteed for common mode transients greater than 50kV/μs.

Enhanced ESD protection allows this part to withstand up to ±20kV (human body model) on the USB transceiver interface pins to local supplies and ±20kV through the isolation barrier to supplies without latch-up or damage.

Applications

  • Isolated USB Interfaces
  • Host, Hub, or Device Isolation
  • Industrial/Medical Data Acquisition
LTM2894
Isolated USB Data Transceiver
LTM2894 Application Circuit LTM2894 Pin Configuration LTM2894 Performance Graph
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Safety and Regulatory Compliance 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Protection Switches & Controllers 1
LTC4362-1
LTC4362-2
1.2A Overvoltage/Overcurrent Protector
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Evaluation Kits

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schematic 1
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schematic 5
DC2438A

LTM2894 Demo Board | USB µModule Isolator

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Product Details

Demonstration circuit 2438A is an isolated USB data transceiver featuring the LTM2894. The demo circuit features an EMI optimized circuit configuration, including an isolated DC-DC converter, and printed circuit board layout. All components for data signaling and isolation are integrated into the LTM2894 using LTC’s isolator μModule® technology. The demo circuit operates from a supply on VCC and/or VBUS. The DC-DC converter generates an unregulated isolated output voltage on VCC2 and regulated 5V for USB communication on VBUS2.


 
DC2438A
LTM2894 Demo Board | USB µModule Isolator
DC2438A Demo Board DC2438A Demo Board DC2438A Demo Board DC2438A Demo Board DC2438A - Schematic

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