The MC10H141 is a four–bit universal shift register. This device is a functional/pinout duplication of the standard MECL 10K part with 100% improvement in propagation delay and operation frequency and no increase in power supply current.
   
• Shift frequency, 250 MHz Min
• Power Dissipation, 425 mW Typical
• Improved Noise Margin 150 mV (over operating voltage and
    temperature range)
• Voltage Compensated
• MECL 10K–Compatible