SN74F163A: Logic Gate Symbol Confusion

Louis Christensen

Part Number: SN74F163A
Other Parts Discussed in Thread: SN74HC163

While looking at the data sheet for the SN74F163A I came across I logic symbol I haven't seen before or understand. It looks like and AND gate, but has a junction in ehe center. What does this symbol represent? I included a screenshot with the symbols in question below.

over 6 years ago

0 Emrys Maier over 6 years ago

TI__Guru* 96591 points

Hi Louis,
It looks like whoever wrote this intended it as an AND gate with the bottom and left signals as inputs and the right signal as an output -- the actual circuit is probably more convoluted than what is shown here.

I would recommend looking at a newer device (the 'F' family is about 40 years old, unless I'm mistaken). Perhaps SN74HC163?

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SN74F163A: Logic Gate Symbol Confusion