MAX9360, MAX9361 pdf datasheet

The MAX9360/MAX9361 are low-skew, single LVTTL/TTL/CMOS-to-differential LVECL/ECL translators designed for high-speed signal and clock driver applications.For interfacing to LVTTL/TTL/CMOS input signals,these devices operate over a 3.0V to 5.5V supply range, allowing high-performance clock or data distribution.For interfacing to differential LVECL/ECL output signals, these devices operate from a -2.375V to -5.5V supply.
The MAX9360 is a 3.3V LVTTL/CMOS-to-LVECL/ECL translator that operates at a typical speed of 3GHz. The MAX9361 is a 5V TTL/CMOS-to-LVECL/ECL translator that operates at a typical speed of 1.3GHz. Both devices can be used to drive either LVECL devices or standard ECL devices with a negative supply range of -2.375V to -5.5V.
The devices default to high if the input is disconnected,and feature ultra-low propagation delay: 440ps for the MAX9360, 810ps for the MAX9361.