DM74S253

DM74S253 Dual 3-STATE 1-of-4 Line Data Selector/Multiplexer August 1986 Revised May 2000 DM74S253 Dual 3-STATE 1-of-4 Line Data Selector/Multiplexer General Description Each of these Schottky-clamped data selectors/multiplexers contains inverters and drivers to supply fully complementary, on-chip, binary decoding data selection to the AND-OR gates. Separate output control inputs are provided for each of the two four-line sections. The 3-STATE outputs can interface directly with data lines of bus-organized systems. With all but one of the common outputs disabled (at a high impedance state), the low impedance of the single enable output will drive the bus line to a HIGH or LOW logic level. Features s 3-STATE version of S153 with same pin-out s Schottky-diode-clamped transistors s Permits multiplexing from N lines to 1 line s Performs parallel-T-serial conversion s Strobe/output control s High fan-out totem-pole outputs s Typical propagation delay From data to output From select to output 6 ns 12 ns s Typical power dissipation 275 mW Ordering Code: Order Number DM74S253N Package Number N16E Package Description 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Connection Diagram Function Table Select Inputs B X L L L L H H H H A X L L H H L L H H C0 X L H X X X X X X C1 X X X L H X X X X C2 X X X X X L H X X C3 X X X X X X X L H Data Inputs Output Control G H L L L L L L L L Y Z L H L H L H L H Output Address inputs A and B are common to both sections....