Sale 7490-Decade Counters zoom
Price: Rs 120.00 Rs 110.00
Product Code: 7490-Decade Counters
Availability: In Stock

Description

           Each  of these  monolithic  counters  contains  four master-slave  flip-flops and  additional  gating  to  provide a devide-by-two counter and a three-stage binary counter for which the count cycle length is devide-by-five for the ' 90A and ' LS90, devide-by-six for the ' 92A and ' LS92, and the devide-by-eight for the ' 93A ' LS93. All  of these  counters  have  a gated  zero  reset  and  the  ' 90A  and 'LS90  also  have  gated  set-to-nine  inputs for use in BCD nine's complement applications.

           To use their maximum count length (decade, devide-by-twelve , or four-bit binary) of these counters, the CKB input is  connected t o the QA output.The input count pulses are applied to CKA input and the outputs are as described in the appropriate function table. A symmetrical divide-by-ten  count can be obtained from the ' 90A  or ' LS90 counters by connecting the QD outputs to the  CKA input and applying the input count to the CKB input which  gives a devide-by-ten square wave at output QA.


 

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