Attached is a snip from a Texas Instruments datasheet for the 74*04 hex inverter chip.
There are three types represented in the datasheet - 7404, 74LS04, 74S04; the original TTL circuit uses the standard BJT transistor symbol, but the other two use a symbol (attached) that I can't seem to find.
What is it??
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By way of explanation, I am working through the AAC book (V4, C3, S2) about "The NOT Gate" and mocking it up in a simulator for sake of understanding the operation of the circuit. (I'm still fuzzy on BJTs, so I like to work through the gate circuits at this level to help strengthen my understanding.) Since the AAC page doesn't show values for the resistors, I though I'd borrow one of the datasheets' values for my simulation.
There are three types represented in the datasheet - 7404, 74LS04, 74S04; the original TTL circuit uses the standard BJT transistor symbol, but the other two use a symbol (attached) that I can't seem to find.
What is it??
-------
By way of explanation, I am working through the AAC book (V4, C3, S2) about "The NOT Gate" and mocking it up in a simulator for sake of understanding the operation of the circuit. (I'm still fuzzy on BJTs, so I like to work through the gate circuits at this level to help strengthen my understanding.) Since the AAC page doesn't show values for the resistors, I though I'd borrow one of the datasheets' values for my simulation.
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