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DM74LS241 Dataheets PDF



Part Number DM74LS241
Manufacturers National Semiconductor
Logo National Semiconductor
Description Octal TRI-STATE Buffers/Line Drivers/Line Receivers
Datasheet DM74LS241 DatasheetDM74LS241 Datasheet (PDF)

DM54LS240 DM74LS240 DM54LS241 DM74LS241 Octal TRI-STATE Buffers Line Drivers Line Receivers April 1992 DM54LS240 DM74LS240 DM54LS241 DM74LS241 Octal TRI-STATE Buffers Line Drivers Line Receivers General Description These buffers line drivers are designed to improve both the performance and PC board density of TRI-STATE buffers drivers employed as memory-address drivers clock drivers and bus-oriented transmitters receivers Featuring 400 mV of hysteresis at each low current PNP data line input t.

  DM74LS241   DM74LS241



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DM54LS240 DM74LS240 DM54LS241 DM74LS241 Octal TRI-STATE Buffers Line Drivers Line Receivers April 1992 DM54LS240 DM74LS240 DM54LS241 DM74LS241 Octal TRI-STATE Buffers Line Drivers Line Receivers General Description These buffers line drivers are designed to improve both the performance and PC board density of TRI-STATE buffers drivers employed as memory-address drivers clock drivers and bus-oriented transmitters receivers Featuring 400 mV of hysteresis at each low current PNP data line input they provide improved noise rejection and high fanout outputs and can be used to drive terminated lines down to 133X Y Y Y Features Y Y Y Y Y TRI-STATE outputs drive bus lines directly PNP inputs reduce DC loading on bus lines Hysteresis at data inputs improves noise margins Typical IOL (sink current) 54LS 12 mA 74LS 24 mA Typical IOH (source current) b 12 mA 54LS b 15 mA 74LS Typical propagation delay times Inverting 10 5 ns Noninverting 12 ns Typical enable disable time 18 ns Typical power dissipation (enabled) Inverting 130 mW Noninverting 135 mW Connection Diagrams Dual-In-Line Package Dual-In-Line Package TL F 6411 – 1 TL F 6411 – 2 Order Number DM54LS240J DM54LS240W DM54LS240E DM74LS240WM or DM74LS240N See NS Package Number E20A J20A M20B N20A or W20A Order Number DM54LS241J DM54LS241W DM54LS241E DM74LS241WM or DM74LS241N See NS Package Number E20A J20A M20B N20A or W20A Function Tables LS240 Inputs G L L H A L H X Output Y H L Z G X X X H H L G L L H X X X LS241 Inputs 1A L H X X X X 2A X X X L H X Outputs 1Y L H Z L H Z 2Y L e Low Logic Level H e High Logic Level X e Either Low or High Logic Level Z e High Impedance TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 6411 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 DM54LS 54LS DM74LS 0 C to a 70 C b 65 C to a 150 C Storage Temperature Range Note The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed The device should not be operated at these limits The parametric values defined in the ‘‘Electrical Characteristics’’ table are not guaranteed at the absolute maximum ratings The ‘‘Recommended Operating Conditions’’ table will define the conditions for actual device operation Recommended Operating Conditions Symbol VCC VIH VIL IOH IOL TA Parameter Min Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Output Current Low Level Output Current Free Air Operating Temperature b 55 DM54LS240 241 Nom 5 Max 55 07 b 12 DM74LS240 241 Min 4 75 2 08 b 15 Units Max 5 25 V V V mA mA C Nom 5 45 2 12 125 0 24 70 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol VI HYS VOH Parameter Input Clamp Voltage Hysteresis (VT a b VTb) Data Inputs Only High Level Output Voltage Conditions VCC e Min II e b18 mA VCC e Min VCC e Min VIH e Min VIL e Max IOH e b1 mA VCC e Min VIH e Min VIL e Max IOH e b3 mA VCC e Min VIH e Min VIL e 0 5V IOH e Max VOL Low Level Output Voltage VCC e Min VIL e Max VIH e Min IOL e 12 mA IOL e Max VO e 2 7V VO e 0 4V DM74 DM54 DM74 DM54 DM74 DM74 DM54 DM74 02 27 24 2 04 04 05 20 b 20 Min Typ Max Units (Note 1) b1 5 V V 04 34 V V IOZH IOZL II IIH IIL IOS ICC Off-State Output Current VCC e Max High Level Voltage Applied VIL e Max VIH e Min Off-State Output Current Low Level Voltage Applied Input Current at Maximum Input Voltage High Level Input Current Low Level Input Current Supply Current VCC e Max VI e 7V (DM74) VI e 10V (DM54) VCC e Max VI e 2 7V VCC e Max VI e 0 4V mA mA mA mA mA mA 01 20 b0 2 b 40 b 225 Short Circuit Output Current VCC e Max (Note 2) VCC e Max Outputs Open Outputs High Outputs Low LS240 LS241 LS240 LS241 Outputs Disabled LS240 LS241 13 26 27 29 32 23 44 46 50 54 mA Note 1 All typicals are at VCC e 5V TA e 25 C Note 2 Not more than one output should be shorted at a time and the duration should not exceed one second 2 Switching Characteristics at VCC e 5V and TA e 25 C Symbol tPLH tPHL tPZL tPZH tPLZ tPHZ tPLH tPHL tPZL tPZH Parameter Propagation Delay Time Low to High Level Output Propagation Delay Time High to Low Level Output Output Enable Time to Low Level Output Enable Time to High Level Output Disable Time from Low Level Output Disable Time from High Level Propagation Delay Time Low to High Level Output Propagation Delay Time High to Low Level Output Output Enable Time to Low Level Output Enable Time to High Level Conditions CL e 45 pF RL e 667X CL e 45 pF RL e 667X CL e 45 pF RL e 667X CL e 45 pF RL e 667X CL e 5 pF RL e 667X CL e 5 pF RL e 667X CL e 150 pF RL e 667X CL e 150 pF RL e 667X CL e 150 pF RL e 667X CL e 150 pF RL e 667X LS240.


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