The M74HC595 apparatus is a high speed CMOS 8-bit shift register with output signal fabricated with silicon gate C2MOS technology. The storage register contains 8 3-state outputs. Separate clocks are supplied for the shift register and the storage register. The shift register has direct predominant clear, sequential input, and serial output (standard) hooks for cascading. The shift register and storage enroll use positive edge triggered clocks. If the two clocks are connected together, the shift register condition will always be a clock pulse ahead of the storage register.