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Part Number 74LS22
Description DUAL 4-INPUT NAND GATE
Info DUAL 4-INPUT NAND GATE SN54/74LS22 VCC 14 13 12 .
Manufacture Motorola
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Part Number 74LS221
Description Dual Monostable Multivibrators
Info SN74LS221 Dual Monostable Multivibrators with Schm.
Manufacture ON Semiconductor
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Part Number 74LS221
Description Dual Non-Retriggerable One-Shot
Info DM74LS221 Dual Non-Retriggerable One-Shot with Cle.
Manufacture Fairchild Semiconductor
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