The ADCMP563/ADCMP564 are high speed comparators fabricated on Analog Devices’ proprietary XFCB process. The devices feature a 700 ps propagation delay with less than 75 ps overdrive dispersion. Dispersion, a measure of the difference in propagation delay under differing overdrive conditions, is a particularly important characteristic of high speed comparators. A separate programmable hysteresis pin is available on the ADCMP564. A differential input stage permits consistent propagation delay with a wide variety of signals in the common-mode range from −2.0 V to +3.0 V. Outputs are complementary digital signals that are fully compatible with ECL 10 K and 10 KH logic families. The outputs provide sufficient drive current to directly drive transmission lines terminated in 50 Ω to −2 V. A latch input, which is included, permits tracking, track-and-hold, or sample-and-hold modes of operation. The latch input pins contain internal pull-ups that set the latch in tracking mode when left open. The ADCMP563/ADCMP564 are specified over the industrial temperature range (−40°C to +85°C). Applications * Automatic test equipment * High speed instrumentation * Scope and logic analyzer front ends * Window comparators * High speed line receivers * Threshold detection * Peak detection * High speed triggers * Patient diagnostics * Hand-held test instruments * Zero crossing detectors * Line receivers and signal restoration * Clock drivers * Differential ECL-compatible outputs * 700 ps propagation delay input to output * 75 ps propagation delay dispersion * Input common-mode range: –2.0 V to +3.0 V * Robust input protection * Differential latch control * Internal latch pull-up resistors * Power supply rejection greater than 85 dB * 700 ps minimum pulse width * 1.5 GHz equivalent input rise time bandwidth * Typical output rise/fall time of 500 ps * ESD protection > 4kV HBM, >200V MM * Programmable hysteresis