【Texas Instruments】SN74LS221N,IC DUAL MONO MULTIVIB 16-DIP
【Texas Instruments】SN74LS221NE4,IC DUAL MONO MULTIVIB 16-DIP
SN74LS221NG4,IC MULTIVIBRATOR 45NS 16DIP
SN74LS221NS,PROTOTYPE
【Texas Instruments】SN74LS221NSR,IC DUAL MONO MULTIVIBRATR 16-SOP
【Texas Instruments】SN74LS221NSRE4,IC DUAL MONO MULTIVIBRATR 16-SOP
【Texas Instruments】SN74LS221NSRG4,IC MONOSTABLE DUAL 14SOP
【Texas Instruments】SN74LS2323D,IC LINE RCVR 2BIT NON-INV 8SOIC