NIM <-> TTL translation circuits

[lsuphysmn]

I need to build circuits for level translation between NIM logic (fast negative) and TTL. Once upon a time, LeCroy sold such a NIM module but they are long gone.

One idea is to start with existing ICs that translate between TTL and ECL and go from there.

For NIM -> TTL, it appears that the MC10H125 Quad MECL-to-TTL translator might work directly since it has differential inputs.

For TTL -> NIM, the MC10H124 Quad TTL-to-MECL outputs would need to be converted to NIM. Someone has suggested a line driver, but this part I am not clear on.

The eventual PCB will need to contain four TTL -> NIM and four NIM -> TTL circuits. Any suggestions?

 

[D.A.(Tony)Stewart]

NIM is a network interface manager that can use any network physical layer such as ethernet to TTL.

You can buy or make this 50 Ohm design driver with many options and sources that exist depending on your qty required.
e.g. http://www.tcnland.co.jp/nim/nim.htm

 

[FvM]

If you want to design your own converter, using discrete transistors may be the easier way. You find circuit suggestions on the net, e.g.