74HC393D,653

74HC393D,653 is a dual 4-stage binary ripple counter. Each counter features a clock input (n active-low CP), an overriding asynchronous host reset input (nMR) and 4 buffered parallel outputs (nQ0 to nQ3). The counter advances on the HIGH-to-LOW transition of n active-low CP. A HIGH on nMR clears the counter stages and forces the outputs LOW, independent of the state of n active-low CP. Inputs include clamp diodes. This enables the use of current-limiting resistors to interface inputs to voltages in excess of VCC.

• Wide supply voltage range from 2.0V to 6.0V
• CMOS low power dissipation, high noise immunity
• Latch-up performance exceeds 100mA per JESD 78 Class II Level B
• CMOS input levels, two 4-bit binary counters with individual clocks
• Input transition rise and fall rate is 625ns/V max at VCC = 2.0V
• Input leakage current is ±1.0μA max at VI = VCC or GND; VCC = 6.0V
• Total power dissipation is 500mW maximum
• Propagation delay is 190ns max at -40°C to +125°C, VCC = 2.0V
• SO14 package
• Temperature range from -40°C to +125°C