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Part Number: MAX232
I am trying to connect TTL output to a GPS generator device (by spirent). The generator needs trigger in with 50 OHm impedance. I connected the source (MAX232) and Load (GPS Trig in) with RG316 (50 Ohm) Coax cable of 6m length. The initial TTL signal i measured was 5V, 1PPS, after conneting the Load it was about 0.3V at it's highest. I was thinking to use an oped-drain buffer (SN74AUP1G07) for a kind of impedance matching. Yet i'm really not sure it's the proper solution, can someone suggest a better solution?
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