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                                                                                                                                     DM74LS240, DM74LS241 Octal 3-STATE Buffers/Line Drivers/Line Receivers
                                                                                                                   March 1998




  DM74LS240, DM74LS241
  Octal 3-STATE Buffers/Line Drivers/Line Receivers
  General Description                                                n Typical IOL (sink current)
                                                                         54LS       12 mA
  These buffers/line drivers are designed to improve both the            74LS       24 mA
  performance and PC board density of 3-STATE buffers/               n Typical IOH (source current)
  drivers employed as memory-address drivers, clock drivers,
                                                                         54LS       -12 mA
  and bus-oriented transmitters/receivers. Featuring 400 mV
                                                                         74LS       -15 mA
  of hysteresis at each low current PNP data line input, they
                                                                     n Typical propagation delay times
  provide improved noise rejection and high fanout outputs
                                                                         Inverting        10.5 ns
  and can be used to drive terminated lines down to 133.
                                                                         Noninverting      12 ns
                                                                     n Typical enable/disable time 18 ns
  Features                                                           n Typical power dissipation (enabled)
  n 3-STATE outputs drive bus lines directly                             Inverting        130 mW
  n PNP inputs reduce DC loading on bus lines                            Noninverting      135 mW
  n Hysteresis at data inputs improves noise margins


  Connection Diagrams
                          Dual-In-Line Package
                                                                                          Dual-In-Line Package




                                                        DS006411-1
                                                                                                                      DS006411-2
                   Order Number DM54LS240J,
                   DM54LS240W, DM54LS240E,                                           Order Number DM54LS241J,
                  DM74LS240WM or DM74LS240N                                          DM54LS241W, DM54LS241E,
                 See Package Number E20A, J20A,                                     DM74LS241WM or DM74LS241N
                       M20B, N20A or W20A                                          See Package Number E20A, J20A,
                                                                                         M20B, N20A or W20A

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