GENERAL DESCRIPTION
The HMC674LC3C/HMC674LP3E are silicon germanium (SiGe), monolithic, ultrafast comparators that feature reduced swing positive emitter-coupled logic (RSPECL) output drivers and latch inputs. These comparators support 10 Gbps operation and provide 85 ps propagation delay and an input signal minimum pulse width of 60 ps with 0.2 ps rms of random jitter (RJ). Overdrive and slew rate dispersion is typically 10 ps, making the HMC674LC3C/HMC674LP3E ideal for a wide range of applications from ATE to broadband communications. The RSPECL output stages directly drive 400 mV into a 50 Ω resistor terminated to VTT = (VCCO − 2.0 V), where VTT is the PECL termination voltage (see Figure 16). The HMC674LC3C/HMC674LP3E feature a high speed latch and programmable hysteresis. These devices can operate in either latch mode or as a tracking comparator.

FEATURES
   Equivalent input bandwidth: 9.3 GHz typical
   Propagation delay: 85 ps typical
   Overdrive and slew rate dispersion: 10 ps typical
   Input signal minimum pulse width: 60 ps typical
   Resistor programmable hysteresis
   Differential latch control
   Power dissipation: 140 mW typical
   16-terminal, 3 mm × 3 mm, ceramic leadless chip carrier (LCC)
   16-lead lead frame chip scale package (LFCSP)

APPLICATIONS
   Automatic test equipment (ATE) applications
   High speed instrumentation
   Digital receiver systems
   Pulse spectroscopy
   High speed trigger circuits
   Clock and data restoration