power supply of ADM3078E

Question

Hi 
 can ADM3078E be powered using 5V? 
 
 thanks 
 wang jian

NQuinn · Accepted Answer

Hello, 
 The ADM3078E was designed and optimized for 3.3V power supply, and has been characterized at 3.3V only. 
 
 The device should not be operated with a 5V power supply, with 5V power the transceiver won&rsquo;t conform to all datasheet specifications. Specifications like supply current, receiver/transmitter skew, receiver input thresholds, input leakage currents, will likely operate all out of specification at 5V. 
 ADI has a wide select of RS-485 transceivers available for use with a 5V power supply, I've listed some options below, 
 For excellent EMC and timing performance up to 50 Mbps, I'd recommend the ADM3065E 
 https://www.analog.com/media/en/technical-documentation/data-sheets/ADM3061E-3062E-3063E-3064E-3065E-3066E-3067E-3068E.pdf 
 The LTC2862A is a highly robust transceiver with extended common mode range and protection against faults up to 60V on the RS-485 bus 
 https://www.analog.com/media/en/technical-documentation/data-sheets/2862af.pdf 
 For ultra low power I would recommend something from the ADM4850 family 
 https://www.analog.com/media/en/technical-documentation/data-sheets/ADM4850_4851_4852_4853_4854_4855_4856_4857.pdf 
 If you need support for up to 256 nodes, either the LTC2856 or the LTC286x (fault protected) 
 https://www.analog.com/media/en/technical-documentation/data-sheets/285678fg.pdf 
 https://www.analog.com/media/en/technical-documentation/data-sheets/2862345fc.pdf 
 
 Regards, 
 Neil

Electronic Design Services - PartnerZone

power supply of ADM3078E

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