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DM74LS123N Datasheet(PDF) 2 Page - National Semiconductor (TI) |
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DM74LS123N Datasheet(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 0 Cto a70 C Storage Temperature 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 Min Nom Max Units VCC Supply Voltage 475 5 525 V VIH High Level Input Voltage 2 V VIL Low Level Input Voltage 08 V IOH High Level Output Current b 04 mA IOL Low Level Output Current 8 mA tW Pulse Width A or B High 40 (Note 6) A or B Low 40 ns Clear Low 40 REXT External Timing Resistor 5 260 kX CEXT External Timing Capacitance No Restriction m F CWIRE Wiring Capacitance 50 pF at REXT CEXT Terminal TA Free Air Operating Temperature 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 27 34 V Voltage VIL e Max VIH e Min VOL Low Level Output VCC e Min IOL e Max 035 05 Voltage VIL e Max VIH e Min V IOL e 4 mA VCC e Min 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 04 mA IOS Short Circuit VCC e Max b 20 b 100 mA Output Current (Note 2) ICC Supply Current VCC e Max (Notes 34 and 5) 12 20 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 Note 3 Quiescent ICC is measured (after clearing) with 24V applied to all clear and A inputs B inputs grounded all outputs open CEXT e 002 mF and REXT e 25 kX Note 4 ICC is measured in the triggered state with 24V applied to all clear and B inputs A inputs grounded all outputs open CEXT e 002 mF and REXT e 25 kX Note 5 With all outputs open and 45V applied to all data and clear inputs ICC is measured after a momentary ground then 45V is applied to the clock Note 6 TA e 25 C and VCC e 5V 2 |
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