поискавой системы для электроныых деталей |
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DM74LS90 датащи(PDF) 3 Page - National Semiconductor (TI) |
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DM74LS90 датащи(HTML) 3 Page - National Semiconductor (TI) |
3 / 10 page ’LS90 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) (Continued) Symbol Parameter Conditions Min Typ Max Units (Note 1) IIH High Level Input VCC e Max VI e 27V Reset 20 Current A40 m A B80 IIL Low Level Input VCC e Max VI e 04V Reset b 04 Current A b 24 mA B b 32 IOS Short Circuit VCC e Max (Note 2) b 20 b 100 mA Output Current ICC Supply Current VCC e Max (Note 3) 9 15 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 ICC is measured with all outputs open both RO inputs grounded following momentary connection to 45V and all other inputs grounded Note 4 QA outputs are tested at IOL e Max plus the limit value of IIL for the B input This permits driving the B input while maintaining full fan-out capability ’LS90 Switching Characteristics at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load) From (Input) RL e 2kX Symbol Parameter To (Output) CL e 15 pF CL e 50 pF Units Min Max Min Max fMAX Maximum Clock A to QA 32 20 MHz Frequency BtoQB 16 10 tPLH Propagation Delay Time AtoQA 16 20 ns Low to High Level Output tPHL Propagation Delay Time AtoQA 18 24 ns High to Low Level Output tPLH Propagation Delay Time AtoQD 48 52 ns Low to High Level Output tPHL Propagation Delay Time AtoQD 50 60 ns High to Low Level Output tPLH Propagation Delay Time BtoQB 16 23 ns Low to High Level Output tPHL Propagation Delay Time BtoQB 21 30 ns High to Low Level Output tPLH Propagation Delay Time BtoQC 32 37 ns Low to High Level Output tPHL Propagation Delay Time BtoQC 35 44 ns High to Low Level Output tPLH Propagation Delay Time BtoQD 32 36 ns Low to High Level Output tPHL Propagation Delay Time BtoQD 35 44 ns High to Low Level Output tPLH Propagation Delay Time SET-9 to 30 35 ns Low to High Level Output QA QD tPHL Propagation Delay Time SET-9 to 40 48 ns High to Low Level Output QB QC tPHL Propagation Delay Time SET-0 to 40 52 ns High to Low Level Output Any Q 3 |
Аналогичный номер детали - DM74LS90 |
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Аналогичное описание - DM74LS90 |
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