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54LS174DMQB bảng dữ liệu(PDF) 2 Page - National Semiconductor (TI) |
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54LS174DMQB bảng dữ liệu(HTML) 2 Page - National Semiconductor (TI) |
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2 / 8 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 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 DM54LS174 DM74LS174 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 fCLK Clock Frequency (Note 1) 0 30 0 30 MHz fCLK Clock Frequency (Note 2) 0 25 0 25 MHz tW Pulse Width Clock 20 20 ns (Note 6) Clear 20 20 tSU Data Setup Time (Note 6) 20 20 ns tH Data Hold Time (Note 6) 0 0 ns tREL Clear Release Time (Note 6) 25 25 ns TA Free Air Operating Temperature b 55 125 0 70 C ’LS174 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ Max Units (Note 3) 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 VIH e Min DM74 27 34 VOL Low Level Output VCC e Min IOL e Max DM54 025 04 Voltage VIL e Max 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 VCC e Max Clock b 04 Current VI e 04V Clear b 04 mA Data b 036 IOS Short Circuit VCC e Max DM54 b 20 b 100 mA Output Current (Note 4) DM74 b 20 b 100 ICC Supply Current VCC e Max (Note 5) 16 26 mA Note 1 CL e 15 pF RL e 2kX TA e 25 C and VCC e 5V Note 2 CL e 50 pF RL e 2kX TA e 25 C and VCC e 5V Note 3 All typicals are at VCC e 5V TA e 25 C Note 4 Not more than one output should be shorted at a time and the duration should not exceed one second Note 5 With all outputs open and 45V applied to all data and clear inputs ICC is measured after a momentary ground then 45V applied to the clock Note 6 TA e 25 C and VCC e 5V 2 |
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