Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Can I substitute a 74ls20 for an obsolete 7440 if I can keep the IOl to 24 mA?
The logic functions are the same except the 7440 has a buffered output. Both have totem pole outputs.
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