CD4518 Dual BCD Up-Counter and CD4520 Dual Binary Up-Counter each consist of two identical, internally synchronous 4-stage counters. The counter stages are D-type flip-flops having interchangeable CLOCK and ENABLE lines for incrementing on either the positive-going or negative-going transition. For single-unit operation the ENABLE input is maintained high and the counter advances on each positive-going transition of the CLOCK. The counters are cleared by high levels on their RESET lines.
• DC Supply Voltage Range, (VDD): -0.5V to +20V
• Input Voltage Range, All Inputs: -0.5V to VDD +0.5V
• DC Input Current, Any One Input: 10mA
• Storage Temperature Range: -65ºC to +150ºC
There are no reviews yet.