What is this symbol?

[Chris W]

I was looking at the logic diagram of a 74LVX238 and there is a symbol
that looks like a NOT gate, except it has the little circle on the input
instead of the output. What is that?

--
Chris W

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[John Fields]

On Tue, 15 Feb 2005 18:57:06 -0600, Chris W <1qazse4@cox.net> wrote:

I was looking at the logic diagram of a 74LVX238 and there is a symbol
that looks like a NOT gate, except it has the little circle on the input
instead of the output. What is that?

---
It's still an inverter, but the "bubble" on the input means that
that's what's important to the circuit; a _low_ on the input of the
inverter causes the desired action to occur on its output.

--
John Fields

 

[John Popelish]

Chris W wrote:

I was looking at the logic diagram of a 74LVX238 and there is a symbol
that looks like a NOT gate, except it has the little circle on the input
instead of the output. What is that?

I think it indicates an input that is active when low.

--
John Popelish