The MC10H174 is a Dual 4–to–1 Multiplexer. This device is a functional/pinout duplication of the standard MECL 10K part, with 100% improvement in propagation delay and no increase in power supply current.
   
• Propagation Delay, 1.5 ns Typical
• Power Dissipation, 305 mW Typical
• Improved Noise Margin 150 mV (over operating voltage and
    temperature range)
• Voltage Compensated
• MECL 10K–Compatible