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DM74LS90

Part Number	DM74LS90
Manufacturer	Fairchild Semiconductor
Description	Decade and Binary Counters
Published	Feb 6, 2015
Detailed Description	DM74LS90 Decade and Binary Counters August 1986 Revised March 2000 DM74LS90 Decade and Binary Counters General Descri...
Datasheet	DM74LS90 PDF File

Overview

DM74LS90 Decade and Binary Counters August 1986 Revised March 2000 DM74LS90 Decade and Binary Counters General Description Each of these monolithic counters contains four masterslave flip-flops and additional gating to provide a divide-bytwo counter and a three-stage binary counter for which the count cycle length is divide-by-five for the DM74LS90.
All of these counters have a gated zero reset and the DM74LS90 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 described in the appropria...

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