7490 Decade Counter (from 0 to 9)

74LS90 This integrated is a decimal counter, contains four master-slave flip-flops and additional gate to provide a two-stage binary counter and a three-stage binary counter for which the counting cycle duration is split-by-five for The '90A and 'LS90, division-between-six for the '92A and 'LS92 and division-eight for the '93a and 'ls93. All of these counters have a gate zeroing and the '90A and 'LS90' also have gate-to-nine inputs for use in nine BCD plug-ins. To use their maximum count length (decade, division-twelve, or 4-bit binary) of these counters, the CKB input is connected to the QA output. The input count pulses are applied to the CKA input and the outputs are as described in the appropriate function table. 

Specs

• Family: LS
• Logic Circuit Type: Counter
• Counter Type: Decade
• Maximum count: 9
• Minimum supply voltage: 4.75 V
• Maximum supply voltage: 5.25 V
• Clock frequency: 42 MHz
• Minimum operating temperature: 0°C
• Maximum operating temperature: 70°C
• Encapsulated: Dip
• Number of pins: 14