DM74LS253 Datasheet | National Semiconductor

Description Each of these Schottky-clamped data selectors multiplexers contains inverters and drivers to supply fully plementary 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 TRI-STATE outputs can interface directly with data lines of bus-organized systems With all but one of the mon 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 Y Y Y Y Y Y Y TRI-STATE version of LS153 with same pinout Schottky-diode-clamped transistors Permit multiplexing from N-lines to one line Performs parallel-to-serial conversion Strobe output control High fanout totem-pole outputs Typical propagation delay Data to output 12 ns Select to output 21 ns Typical power dissipation 35 m W Alternate Military Aerospace device (54LS253) is available Contact a National Semiconductor Sales Office Distributor for specifications Connection Diagram Dual-In-Line Package 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 Data Inputs 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 Output Control G H L L L L L L L L Output Y Z L H L H L H L H Address Inputs A and B are mon to both sections H e High Level L e Low Level X e Don’t Care Z e High Impedance (off) TL F 6416 - 1 Order Number 54LS253DMQB 54LS253FMQB 54LS253LMQB DM54LS253J DM54LS253W DM74LS253M or DM74LS253N See NS Package Number E20A J16A M16A N16E or W16A TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 6416 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Note) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range b 55 C to a 125 C...