Can the LMH0344 and LMH0302 together can perform the same functions as the LMH0387? If so what are the possible setbacks and loop holes to look out for.
Hypothetically, yes, this is possible. But in reality, it is a very tricky layout exercise to create a bidirectional I/O using a discrete equalizer and cable driver (such as the LMH0344 and LMH0302). Performance is inherently compromised when combining the two functions. There are several concerns:
If you attempt this discrete solution, you will have a very difficult layout exercise as described above. Once (if) you are happy with the design after your efforts, you will have to support a board design with these many critical passive components. Assembly issues such as bad solder joints will be a nightmare to troubleshoot. This is another benefit of using the LMH0387: one device replaces two ICs and many (critical) passives.
Thank you Gary. I will relay this information over to the customer.
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