Part Number
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7493 |
Manufacturer
|
Fairchild |
Description
|
Decade and Binary Counters |
Published
|
Aug 19, 2005 |
Detailed Description
|
DM7490A, DM7493A Decade and Binary Counters
March 1998
DM7490A, DM7493A Decade and Binary Counters
General Descriptio...
|
Datasheet
|
7493
|
Overview
DM7490A, DM7493A Decade and Binary Counters
March 1998
DM7490A, DM7493A Decade and Binary Counters
General Description
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.
To use their maximum count length (decade or four-bit binary), the B input is connected to the QA output.
The input count pulses are applied to input A and the outputs are as
descr...
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