器件名称:
DM74LS253M
功能描述:
3-STATE Data Selector/Multiplexer
文件大小:
56.94KB 共6页
简 介:
DM74LS253 3-STATE Data Selector/Multiplexer August 1986 Revised March 2000 DM74LS253 3-STATE 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 enabled output will drive the bus line to a HIGH or LOW logic level. Features s 3-STATE version of DM74LS153 with same pinout s Schottky-diode-clamped transistors s Permit multiplexing from N-lines to one line s Performs parallel-to-serial conversion s Strobe/output control s High fanout totem-pole outputs s Typical propagation delay Data to output Select to output 12 ns 21 ns s Typical power dissipation 35 mW Ordering Code: Order Number DM74LS253M DM74LS253N Package Number M16A N16E Package Description 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. 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……
