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Voltage stepdown and stuff

Name: Anonymous 2005-11-25 0:56


How can I convert 5V to 3.6V? Is this something that a few diodes will do, or is there a cheap IC that would perform this task? For example NEC makes an 8-pin chip to convert 5V to 2V, but 3.6V seems like an unusual voltage.

I want to provide either 5V or 0V at a pin depending on the state of a 74LS74 output. I'm unfamiliar with analog electronics, but can a transistor be used to do this? If so, how?

I think I'd have the base connected to the TTL output, the collector to the 5V source, and the emitter to the output pin. Not sure if I need to use NPN vs PNP or really anything else.

Name: Anonymous 2005-12-02 18:23

>>1
Answer to question 1 http//www.digikey.co/...

As for question 2, that's easy, just use a transmission gate.

Name: Anonymous 2005-12-02 18:30

>>1
Wait, you wouldn't even need a transmission gate. If you know digital electronics but not analog, why are you even asking this?

Name: Anonymous 2005-12-09 18:14 (sage)

>>3

I see, from looking around it seems like a 74HC4066 does this function (hadn't heard the term transmission gate before). In fact now that I think about it I've seen those used to switch signals around that weren't at TTL levels too, like audio and video signals. Very versatile. Thanks.

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