The VHC/VHCT374 is an advanced high speed CMOS octal flip-flop with TRI-STATE output fabricated with silicon gate CMOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. This 8-bit D-type flip-flop is controlled by a clock input (CP) and an output enable input (OE). When the OEinput is high, the eight outputs are in a high impedance state. An input protection circuit ensures that 0V± 7V can be ap
plied to the input pins without regard to the supply voltage. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages.