TC74VHC393FT

The TC74VHC393FT from Toshiba is an advanced, high-speed CMOS dual 4-bit binary counter fabricated with silicon gate C2MOS technology. It offers high-speed operation comparable to Bipolar Schottky TTL while maintaining low CMOS power dissipation.

This device contains two independent counter circuits, enabling the counting or frequency division of up to eight binary bits within a single IC. It changes state on the negative-going transition of the clock pulse and can be reset to '0' via the CLEAR input. The counter operates with a supply voltage range of 2.0 V to 5.5 V and an input voltage range of 0 V to 5.5 V. It features a maximum clock frequency of 170 MHz at 5 V and a low quiescent current of 4 μA at 25°C.

The TC74VHC393FT is designed for applications requiring high-speed counting and frequency division. Its wide operating voltage range allows for interfacing between 5 V and 3 V systems. The device is available in a TSSOP14 package, weighing approximately 0.06 g.

Key electrical characteristics include a low noise output (VOLP max 0.8 V) and high noise immunity (28% VCC min). Input protection circuits prevent damage from mismatched supply and input voltages.