SN74LVC8T245: Max cable length

Alex Segler

Part Number: SN74LVC8T245

Tool/software:

Hello team - can you help with the below?

We would like to know what’s the max cable length we can go with when driving 5V TTL thru SN74LVC8T245? Our clock speed is under 20MHz, and we can go with low capacitance cable or whatever you recommend etc.

6 months ago

0 Clemens Ladisch 6 months ago

Guru 317110 points

See [FAQ] What's the difference between TTL and 5V CMOS logic?, [FAQ] What is the maximum trace length that a logic device can drive?, and [FAQ] What happens when I connect a logic device's output to a 50 ohm transmission line?

0 Joshua Salinas 6 months ago

TI__Mastermind 23060 points

Hello Alex,

The FAQs that Clemens shared should be help answer your question.

Let us know if you have additional questions.

Regards,

Josh

Logic

Logic forum

SN74LVC8T245: Max cable length