SN74LS151: Error in datasheet

Rodrigo Soares

Part Number: SN74LS151

Tool/software:

The logic function provided in the datasheet differs from the truth table in the enable input.

The enable should not be denied in the logic function.

0 Albert Xu1 7 months ago

Hi Rodrigo,

I am not too clear what you are referring to. Can you help clarify?

0 Rodrigo Soares 7 months ago in reply to Albert Xu1

The truth table does not agree with the logic function in the enable input.

When E'=0, Z=0,where E' is the negation of E.

But here, is the opposite:

0 Clemens Ladisch 7 months ago in reply to Rodrigo Soares

Guru 318050 points

Which datasheet are these screenshots from? The SN74LS151 datasheet does not call the strobe input "/E".

The truth table is correct.

0 Rodrigo Soares 7 months ago in reply to Clemens Ladisch

Yes I agree the truth table is correct. The logic function is wrong. 74LS151.pdf

+1 Clemens Ladisch 7 months ago in reply to Rodrigo Soares

Guru 318050 points

You have attached the datasheet from ON Semiconductor. The TI datasheet is correct.

Logic forum