Hi,
Good Day. I have a customer who is working with SN74HC266. Please see below his query for your reference. Thank you very much.
I have a chip that I would like to use in my digital electronics classroom - product # SN74HC266N. However, I cannot get any outputs to work.
I'm trying to get the chip# SN74HC266N to work, but I can't seem to get any true outputs, no matter the input.
When I apply 5V to both pins 1 and 2, there is no voltage output. Same case if 0V is applied to pins 1+2.
I am looking at pin 3 for the output.
I am just doing a simple logic circuit, so the schematic I am building is only a single XNOR gate.
page 1, with the input and outputs and pins, then page 22 to know that pin1 is just below the bubble, and where 5V and 0V are.
I'd just really like to get this chip working to avoid doing a NOT IC and then an XOR IC in our next project.
The correct pins have VCC and GND. I have tested supply and input voltages. All voltages (input and supply) are at 5V. The current is at 18mA. I have several logic IC chips for my course, and this one is the only one that does not work to spec.
Please advise. Thank you very much.
Best Regards,
Ray Vincent
