74240
Eight three-state inverting buffer / line driver / line receiver (San Mao)
74244
Octal 3-STATE Buffer/Line Driver/Line Receiver (Fairchild Semiconductor)
74244
Octal 3-STATE Buffer/Line Driver/Line Receiver (ETC)
74245
3-STATE Octal Bus Transceiver (Fairchild Semiconductor)
74247
BCD to 7-Segment Decoder/Driver (National Semiconductor)
74248
BCD to 7-Segment Decoder/Driver (ETC)
7420
Dual 4-Input NAND Gates (Fairchild Semiconductor)
7420
Dual 4-Input Positive NAND Gate (NTE)
7421
Dual 4-Input Positive AND Gate (Fairchild Semiconductor)
74221
Dual non-retriggerable monostable multivibrator (NXP)