SN74S280NSR
Rochester Electronics
RO-3-2513
74F402PC
PY28349BOC
SN74AS280DE4
DM74S280J
QS74FCT1280ATSO
QS74FCT2521BTSO
SN74ALS280N
SN74ALS280DR
QS74FCT280BTS1
QS74FCT1280TS0
QS74FCT1280TQ
CP82C88S2485
CP82C88S2064
QS74FCT1280TSO
COM8136-6P
MC10H160M
MC10H160FNG
MC10H160FN