7490 Decade Counter IC 4 Bit BCD Counter IC

7490 is a Binary coded decimal counter and counts up to ten digits. Being binary counter it counts in binary digit like 0000, 0001, etc. The IC contains 4 master-slave flip-flops and some gating circuits to provide a divide-by-two counter and three-stage binary counter for which counter is divided by 5. The counter circuit gets reset for every new clock

Specification

• Voltage supply: 4.5-5.5V
• Typical voltage supply: 5V
• Maximum clock frequency: 30MHz
• High-level output current: -800µA
• Low-level output current: 16mA
• High-level input voltage: 2V
• Low-level input voltage: 0.8V
• Current rating: 5.2mA
• Propagation delay: 18ns
• High speed
• Low power consumption
• TTL compatible
• High noise immunity