spdif ttl->coax

[orange47]

Treba mi nesto ovako:

S/PDIF: TTL to Coax Converter

I'm working on converting TTL S/PDIF to Coaxial level (0.5Vpp). I have implemented the following circuit using a Toshiba TC7W04, which is a 74HC04-type inverter: But it does not appear to work in

electronics.stackexchange.com

za dat uredjaj koji ima konektor sa ttl spdif signalom. Ima li tako nesto da se kupi gotovo kod nas ili neka jednostavna shema uredjaja koja provereno radi?