General Description

The DM7490A monolithic counter contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and a three-stage binary counter for which the count cycle length is divide-by-five.

The counter has a gated zero reset and also has gated setto-nine inputs for use in BCD nine’s complement applications.

Features

■ Typical power dissipation

—90A 145 mW

■ Count frequency 42 MHz

• 7490
• 7490
• HD7490A
• SN7490A
• SN7490A
• SN7490A
• SN7490AN
• SN7490AN