1 Features
• Wide operating voltage range of 2V to 6V
• Outputs can drive up to 10 LSTTL loads
• Low power consumption: 80μA max ICC
• Typical tpd = 13ns
• ±4mA output drive at 5V
• Low input current of 1μA max
• Dual 4-bit binary counters with individual clocks
• Direct clear for each 4-bit counter
• Can significantly improve system densities by
reducing counter package count by 50%

2 Description
The ’HC393 devices contain eight flip-flops and
additional gating to implement two individual 4-bit
counters in a single package.