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TLK2501: TLK 2501

Part Number: TLK2501

Hello guys,

I am bit new in power electronics, I am devoloping a optical communication link, and I have used the TLK 2501 as a motherboard of my transreceiver , nevertheless, I used it for sequentially converting the 14bit parallel input to serial output. Besides, it will synchronize the data with receiver circuit. I have checked all the pins, including Tx D0-15, and GTX CLK , so on , I found it perfect condition,

Unfortunately, I did not get my expected output in the DOUTTXP or DOUTTXN pin, instead of getting a serial data bit stream , I am getting  a DC signal of 2.5 volt.

I will be really thankful if anyone provide me any suggestion.

Thanks in advance,

Asif