Part Number: 1489NDS1489N (Nationl) Part Number: 1489NMC14 (National semiconductor) Part Number: 1489NSIG (Mc1489n) Part Number: 1489P (P) Part Number: 1489P1018 (Nut) Part Number: 1489P1032 (Nut) Part Number: 1489P12 (Call for availability and pricin) Part Number: 1489P16 (Call for availability and pricin) Part Number: 1489P20 (Call for availability and pricin) Part Number: 1489P25 (Call for availability and pricin) Part Number: 1489P30 (Call for availability and pricin) Part Number: 1489P36 (Hammond m) Part Number: 1489P4 (Hammond m) Part Number: 1489P42 (Call for availability and pricin)