74F821SPC Logic IC - DIP24 - National Semiconductor - NSC

74F544SPC Logic IC - DIP24 - National Semiconductor - NSC

74F827SPC Logic IC - DIP24 - National Semiconductor - NSC

74F651SPC Logic IC - DIP24 - National Semiconductor - NSC

74F652SPC Logic IC - DIP24 - National Semiconductor - NSC

74HC646 Logic IC - DIP24 - Harris Semiconductor

74FCT646 Logic IC - DIP24 - Cypress Semiconductor

74F646 Logic IC TTL - DIP24 - National Semiconductor - NSC