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Absolute Maximum Ratings (Note) If MilitaryAerospace specified devices are required please contact the National Semiconductor Sales OfficeDistributors for availability and specifications Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range DM54LS and 54LS b 55 Cto a125 C DM74LS 0 Cto a70 C Storage Temperature Range b 65 Cto a150 C Note The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaran- teed 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 Parameter DM54LS04 DM74LS04 Units Min Nom Max Min Nom Max VCC Supply Voltage 45 5 55 475 5 525 V VIH High Level Input Voltage 2 2 V VIL Low Level Input Voltage 07 08 V IOH High Level Output Current b 04 b 04 mA IOL Low Level Output Current 4 8 mA TA Free Air Operating Temperature b 55 125 0 70 C Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ Max Units (Note 1) VI Input Clamp Voltage VCC e Min II eb18 mA b 15 V VOH High Level Output VCC e Min IOH e Max DM54 25 34 V Voltage VIL e Max DM74 27 34 VOL Low Level Output VCC e Min IOL e Max DM54 025 04 Voltage VIH e Min DM74 035 05 V IOL e 4 mA VCC e Min DM74 025 04 II Input Current Max VCC e Max VI e 7V 01 mA Input Voltage IIH High Level Input Current VCC e Max VI e 27V 20 m A IIL Low Level Input Current VCC e Max VI e 04V b 036 mA IOS Short Circuit VCC e Max DM54 b 20 b 100 mA Output Current (Note 2) DM74 b 20 b 100 ICCH Supply Current with VCC e Max 12 24 mA Outputs High ICCL Supply Current with VCC e Max 36 66 mA Outputs Low Switching Characteristics at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load) RL e 2kX Symbol Parameter CL e 15 pF CL e 50 pF Units Min Max Min Max tPLH Propagation Delay Time 310415 ns Low to High Level Output tPHL Propagation Delay Time 310415 ns High to Low Level Output 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 |
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