SN74LVC07A: replace sn74ls07D

zhang ping

Part Number: SN74LVC07A

Tool/software:

SN74LS07D needs to find an industrial grade alternative that supports TTL level input. We have tried SN74LVC07AD but it cannot be used. Please recommend one

4 months ago

0 Owen Westfall 4 months ago

TI__Genius 9341 points

Hi Zhang,

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

Regards,

Owen

0 zhang ping 4 months ago in reply to Owen Westfall

Genius 3555 points

Can you give me some suggestions to adjust the circuit so that SN74LVC07A or SN74LV07 can be used on TTL input circuits?

0 Owen Westfall 4 months ago in reply to zhang ping

TI__Genius 9341 points

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

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SN74LVC07A: replace sn74ls07D