LT1039

Question

Hi, 
 According to LT1039 datasheet for specific pin V+ and V-, I assume these 2 pins are "input" that you can connect to external &plusmn;15V (&plusmn;16V max) power supplies. Am I correct? Many other RS-232 devices have +V and V- pins as "output" only. 
 Could you please help to confirm these pins V+ and V- are "input only"? I need RS-232 that can fully swing &plusmn;15V for my application. 
 Thank you.

Naveen Afzal · Accepted Answer

Hi Inguyen, Note that the driver output of this part can be externally forced to &plusmn;30V with no damage or excessive current flow, and will not disrupt the supplies. Also, this part doesn&rsquo;t have a switching power supply, so you can power V+ and V- externally with up to +-15V (abs max rating is +-16V on Driver (V+, V&ndash;)), and it will give you around +14.9V to -14V swing on the outputs (typically). Please refer to the table at the bottom of page on the data sheet. 
 
 Regards, Naveen)

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Products Mentioned

LT1039