[can i change the 74HC14 with the 74LS14]

Hi to all ive a question can i replace the 74HC14 with the 74LS14 can it work as well.

thx to all.

ECHO

[could i replace the 74LS240 for the 74HCT240]

Thx men i can find the 74LS240 to replace it for the 74HCT240 thats the circuit i just need to find another replace for the MPF970 thx to you men good luck.

ECHO

[need a MPF970 replace]

hi to all i've start to find the transistor MPF970 and i cant find it in my location i've been read another post and find a possible replace but i cant find it again its the 2N3993 AND THE 2N5114 can anybody help me with another components more commons i'm from Colombia south-america. thx to all.

[could i replace the 74LS240 for the 74HCT240]

Hi to all ive a question i need a replace for the integrated circuit cause in my town i cant find it.

he name of the ic is

74HCT240 and a provider said to me that the 74LS240 can replace it but i dont trust at all in his words can anybody help me???

SO many thxs to all.

Echo