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54LS244LMQB Folha de dados(PDF) 2 Page - National Semiconductor (TI) |
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54LS244LMQB Folha de dados(HTML) 2 Page - National Semiconductor (TI) |
2 / 6 page 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 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 54LS244 DM74LS244 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 12 b 15 mA IOL Low Level Output Current 12 24 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 HYS Hysteresis (VTa b VTb)VCC e Min 02 04 V Data Inputs Only VOH High Level Output Voltage VCC e Min VIH e Min DM74 27 VIL e Max IOH eb1mA VCC e Min VIH e Min 54LSDM74 24 34 V VIL e Max IOH eb3mA VCC e Min VIH e Min 54LSDM74 2 VIL e 05V IOH e Max VOL Low Level Output Voltage VCC e Min IOL e 12 mA 54LSDM74 04 VIL e Max V IOL e Max DM74 05 VIH e Min IOZH Off-State Output Current VCC e Max VO e 27V 20 m A High Level Voltage Applied VIL e Max IOZL Off-State Output Current VIH e Min VO e 04V b 20 m A Low Level Voltage Applied II Input Current at Maximum VCC e Max VI e 7V (DM74) 01 mA Input Voltage VI e 10V (54LS) 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 05 b 200 m A IOS Short Circuit Output Current VCC e Max (Note 2) 54LS b 50 b 225 mA DM74 b 40 ICC Supply Current VCC e Max Outputs High 13 23 Outputs Open Outputs Low 27 46 mA Outputs Disabled 32 54 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 |
Nº de peça semelhante - 54LS244LMQB |
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Descrição semelhante - 54LS244LMQB |
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