HFA-0003/HFA-0003L pdf datashe

The HFA-0003/0003L are monolithic, ultra high speed,
voltage comparators. These comparators combine a low
input offset voltage (1.0mV) with a low propagation delay
(2.0ns) to achieve a large dynamic input range. The low offset
voltage also makes these comparators ideally suited for
high speed, precision analog-to-digital processing applications.
The circuits have differential analog inputs, and provide
complementary, ECL compatible (10K and 100K) logic
outputs. The outputs are capable of supplying the current
required by terminated 50Ω transmission lines. Both outputs
are open emitter structures, requiring external pull-down
resistors. The recommended circuit is 50Ω connected to -
2.0V, but any equivalent ECL termination circuit may be
used.