Each of these monolithic counters 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 for the 90A and divide by-eight for the 93A.
All of these counters have a gated zero reset and the 90A also has gated set-to-nine inputs for use in BCD nine’s complement applications.

Block Diagram

Acquired by Texas Instruments on September 23rd, 2011.

Other data sheets within the file : 7490A, 7493A, DM5490, DM5490J

Each of these monolithic counters contains four master-slave flip-flops and addtional gating to provide a divide-by-two counter and a three-stage binary counter for which the count cycle length is divide-by-five for the 90A and divide-by-eight for the 93A.

All of these counters have a gated zero reset and the 90A also has gated set-to-nine inputs for use in BCD nine’s complement applications.

Features

1. Typical power dissipation
(1) 90A 145mW
(2) 93A 130mW