These data selectors/multiplexers contain inverters and drivers to supply full on-chip data selection to the four 3STATE outputs that can interface directly with data lines of bus-organized systems. A 4-bit word selected from one of two sources is routed to the four outputs. The DM74ALS257 presents true data whereas the DM74ALS258 presents inverted data to m.
s Switching specifications at 50 pF s Switching specifications guaranteed over full temperature and VCC range s Advanced oxide-isolated, ion-implanted Schottky TTL process s Functionally and pin for pin compatible with Schottky and low power Schottky TTL counterpart s Improved AC performance over Schottky and low power Schottky counterparts s 3-STATE buffer-type outputs drive bus lines directly s Expand any data input point s Multiplex dual data buses s General four functions of two variables (one variable is common) s Source programmable counters Ordering Code: Order Number DM74ALS257M DM74A.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | DM74ALS251 |
Fairchild Semiconductor |
3-STATE 1-of-8 Line Data Selector/Multiplexer | |
2 | DM74ALS253 |
Fairchild Semiconductor |
3-STATE Dual 1-of-4 Line Data Selector/Multiplexer | |
3 | DM74ALS258 |
Fairchild Semiconductor |
3-STATE Quad 1-of-2-Line Data Selector/Multiplexer | |
4 | DM74ALS20A |
Fairchild Semiconductor |
Dual 4-Input NAND Gate | |
5 | DM74ALS21A |
Fairchild Semiconductor |
Dual 4-Input AND Gate | |
6 | DM74ALS240A |
Fairchild Semiconductor |
Octal 3-STATE Bus Driver | |
7 | DM74ALS241A |
Fairchild Semiconductor |
Octal 3-STATE Bus Driver | |
8 | DM74ALS244A |
Fairchild Semiconductor |
Octal 3-STATE Bus Driver | |
9 | DM74ALS245A |
Fairchild Semiconductor |
Octal 3-STATE Bus Transceiver | |
10 | DM74ALS27 |
Fairchild Semiconductor |
Triple 3-Input NOR Gate | |
11 | DM74ALS273 |
Fairchild Semiconductor |
Octal D-Type Edge-Triggered Flip-Flop | |
12 | DM74ALS00A |
Fairchild Semiconductor |
Quad 2-Input NAND Gate |