74ACQ543
Quiet Series Octal Registered Transceiver (National Semiconductor)
74ACQ544
Quiet Series Octal Registered Transceiver (Fairchild Semiconductor)
74ACQ573
Quiet Series Octal Latch (Fairchild Semiconductor)
74ACQ574
Quiet Series Octal D-Type Flip-Flop (Fairchild Semiconductor)
74ACQ574
Quiet Series Octal D Flip-Flop (National Semiconductor)
74ACQ240
Quiet Series. Octal Buffer/Line Driver (Fairchild Semiconductor)
74ACQ241
Octal Buffer/Line Driver (Fairchild Semiconductor)
74ACQ241
Quiet Series Octal Buffer/Line Driver (National Semiconductor)
74ACQ244
Quiet Series. Octal Buffer/Line Driver (Fairchild Semiconductor)
74ACQ244
Quiet Seres Octal Buffer/Line Driver (National Semiconductor)