SN74LVC07A: replace sn74ls07D

Hi Zhang,

The only TTL input device with open drain outputs is going to be the SN74ACT7541.

Regards,

Owen

You could run the device at a lower voltage. Running the device at 3.3 V converts the VIH and VIL to what you would expect from a TTL device.

The SN74LVC07A also has overvoltage tolerant inputs so if you just want the device to switch at 2 V you can still have the final voltage be around the 5 V range.

Then the Pull-ups can be left the same at the output as the output voltage can be whatever was designed with previously

-Owen