The AD8611/AD8612 are single and dual 4 ns comparators with latch function and complementary output. Fast 4 ns propagation delay makes the AD8611/AD8612 a good choice for timing circuits and line receivers. Propagation delays for rising and falling signals are closely matched and track over temperature. This matched delay makes the AD8611/AD8612 a good choice for clock recovery, since the duty cycle of the output will match the duty cycle of the input. The AD8611 has the same pinout as the LT1016 and LT1394, with lower supply current and a wider common-mode input range, which includes the negative supply rail.