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Low voltage replacement for 74HC74 circuit

Low voltage replacement for 74HC74 circuit

Low voltage replacement for 74HC74 circuit

(OP)
I'm working in a tight space envelope (about the size of a AAA battery) and need a momentary switch to latch on/off a tiny motor. In order to conserve on parts and assembly, I was going to use a 74HC74 (http://www.nxp.com/documents/data_sheet/74HC_HCT74...) turn my circuit on and off and keep it that way until I hit the momentary switch again.

However, the 74HC74 has a minimum voltage supply of 2v while I am restricted to using 1.2v AAA batteries. I'm quite a layman groping in the dark here, but how would I go about finding a similar/identical circuit for use on a lower voltage?

I am adapting the design from here: http://www.discovercircuits.com/DJ-Circuits/onoffw...
Although, my understanding is that I can remove most of the extra parts and have the 74HC74 do all of the work (as a latching switch).

RE: Low voltage replacement for 74HC74 circuit

(OP)
Cool, kind of a perfect article. However, since we're hoping to mass produce and our entire foot print has to fit inside the diameter of a AAA battery, having a single IC do all the work without exterior parts would be ideal. Plus, I'm limited to a single 1.2v AAA battery, is there a class of IC's that work in that range, or would I always have to step the voltage up?

RE: Low voltage replacement for 74HC74 circuit

If you don't need a full dual D Flip-Flop like the 74HC74, a number of companies make single type devices in small surface mount packages. Devices like a Texas Insturments SN74AUP1G79DBVR work down to 0.8 volts. There is a wide variety of these available with a variety of positive/negative inputs, etc. Usually called tiny logic or single gate logic.

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