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i designed a new board were a TTL 3.3v signal is suppose to transmit through a modem. But when i tried connecting a ttl signal the voltage level is dropping form 3.3v to 2v. Please anyone suggest a solution to avoid the same.
TTL voltage dropping from 3.3v to 2v
- Thread starter sreeragmt1990
- Start date
djsfantasi
- Joined Apr 11, 2010
- 9,237
Please! Another post which requires a Crystal Ball.
How do you expect an answer when you haven’t provided sufficient information?
What chips are you using? How is the circuit powered? What is the supply voltage? Where is the 3.3V signal coming from? How is the output connected?
Please post a schematic of your circuit. It should answer most of these questions.
How do you expect an answer when you haven’t provided sufficient information?
What chips are you using? How is the circuit powered? What is the supply voltage? Where is the 3.3V signal coming from? How is the output connected?
Please post a schematic of your circuit. It should answer most of these questions.
Hi , basically i am connecting Pixhawk Cube Telemetry to radio, and it is a direct connection. is schematic really needed here?
djsfantasi
- Joined Apr 11, 2010
- 9,237
Ummm... yes. But if everything is a commercial module, then we need their schematics and datasheets. Particularly of the module with 3.3V in and 2V out.
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