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DM54LS190/DM74LS190, DM54LS191/DM74LS191 Synchronous 4-Bit Up/Down Counters w ith Mode Control
National
Semiconductor
May 1989
DM54LS190/DM74LS190, DM54LS191/DM74LS191 Synchronous 4-B
Scan
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