Hello, Currently I am developing a board which interfaces with an ECL device. These ECL diff. pairs need to be converted to TTL for data processing. But all the translators I found require a negative voltage supply. This is not an option because then I have to use DC-DC converters and that will make the board to expensive. Is there any proven solution to connect ECL diff pairs to a PECL-TTL translator? My idea was to use a capacitor and a two resistors to shift the ECL level from -1.6 for low and -0.8 for high to PECL levels. But a DC level on the ECL line would not work. Can you help me?