LTM2889 ISOLATIONCHARACTERISTICS TA = 25°CSYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS VISO Rated Dielectric Insulation Voltage 1 Second (Notes 7, 8, 9) 3000 VRMS 1 Minute, Derived from 1 Second Test (Note 9) 2500 VRMS Common Mode Transient Immunity LTM2889-3 VCC = 3.3V, LTM2889-5 30 50 kV/µs VCC = 5.0V, VL = ON = 3.3V, ΔV(GND2-GND) = 1kV, Δt = 33ns (Note 3) VIORM Maximum Working Insulation Voltage (Notes 3,10) 560 VPEAK, VDC 400 VRMS Partial Discharge VPD = 1060 VPEAK (Note 7) 5 pC CTI Comparative Tracking Index IEC 60112 (Note 3) 600 VRMS Depth of Erosion IEC 60112 (Note 3) 0.017 mm DTI Distance Through Insulation (Note 3) 0.06 mm Input to Output Resistance (Notes 3, 7) 109 Ω Input to Output Capacitance (Notes 3, 7) 6 pF Creepage Distance (Notes 3, 7) 9.5 mm Note 1. Stresses beyond those listed under Absolute Maximum Ratings Note 6. Pin capacitance given for reference only and is not tested in may cause permanent damage to the device. Exposure to any Absolute production. Maximum Rating condition for extended periods may affect device Note 7. Device considered a 2-terminal device. Pin group A1 through B8 reliability and lifetime. shorted together and pin group K1 through L8 shorted together. Note 2. All currents into device pins are positive; all currents out of device Note 8. The Rated Dielectric Insulation Voltage should not be interpreted pins are negative. All voltages are referenced to device ground unless as a continuous voltage rating. otherwise specified. Note 9. In accordance with UL1577, each device is proof tested for the Note 3. Not tested in production. 2500VRMS rating by applying an insulation test voltage of 3000VRMS for 1 Note 4. This module includes overtemperature protection that is intended second. to protect the device during momentary overload conditions. Junction Note 10. Maximum Working Insulation Voltage is for continuous or temperature exceeds 150°C when overtemperature protection is active. repeated voltage applied across the isolation boundary. Refer also to Continuous operation above the specified maximum operating temperature relevant equipment level safety specifications which may reduce VIORM may result in device degradation or failure. depending on application conditions. Note 5. TXD must make a high to low transition after this time to assert a bus dominant state. 2889fa For more information www.linear.com/LTM2889 7
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