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 ’LS90 and divide-by-eight for the ’LS93.
Features
- n Typical power dissipation 45 mW n Count frequency 42 MHz
Connection Diagrams (Dual-In-Line Packages)
DS006381-1
Order Number DM74LS90M or DM74LS90N See Package Number M14A or N14A
DS006381-2
Order Number DM74LS93M or DM74LS93N See Package Number M14A or N14A
© 1998 Fairchild Semiconductor Corporation DS006381
www. fairchildsemi. com
Absolute Maximum Ratings (Note 1)
Supply Voltage Input Voltage (Reset) Input Voltage (A or B)
7V 7V 5.5V
Operating Free Air Temperature Range DM74LS
Storage.
DM74LS90-FairchildSemiconductor.pdf