M74LS221P
Dual Monostable Multivibrator (Mitsubishi Electric)
M74LS20P
Dual 4-Input Positive NAND Gate (Mitsubishi Electric)
M74LS244P
OCTAL BUFFER/LINE DRIVERS (Mitsubishi)
M74LS251P
8-Line to 3-Line Data Selector / Multiplexer (Mitsubishi Electric)
M74LS253P
Dual 4-Line to 1-Line Data Selector / Multiplexer (Mitsubishi Electric)
M74LS256P
Dual 4-Bit Addressable Latch (Mitsubishi Electric)
M74LS257AP
Quadruple 2-Line to 1-Line Data Selector / Multiplexer (Mitsubishi Electric)
M74LS258AP
Quadruple 2-Line to 1-Line Data Selector / Multiplexer (Mitsubishi Electric)
M74LS259P
8-Bit Addressable Latch (Mitsubishi Electric)
M74LS273P
OCTAL POSITIVE EDGE-TRIGGERED D-TYPE FLIP-FLOP (Mitsubishi)