HD74LS20P

This is a 4-bit Binary Counter contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and divideby-eight counter. This counter has a gated zero reset. To use the maximum count length of this counter, the B input is connected to the QA output

Technical Specification

• Supply voltage : 5V
• Operating temperature: -20 - 75C
• Maximun count frequency: 42Mhz
• Propagation delay time: 10ns