74HCT221N,112
Rochester Electronics
DM74LS221SJ
CD74HCT4538M
74VHC221AMTC
MC74HC4538ADR2
CD74HCT221E
MC74HC4538AFELG
CD74HC423E
74HCT123N,652
SC14538BDTR2G
MC74HC4538AFR2-MO
MC74HC4538AFR2
MM74HC4538SJX
CD74HC123NS
74HCT221DB,112
74HCT221DB,118
NLV14538BDWR2G
74LS123FP-E
9602PC
9602PCQR