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100336 Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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100336 Datasheet(HTML) 4 Page - National Semiconductor (TI) |
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4 / 16 page ![]() Function Select Table S 2 S 1 S 0 Function L L L Parallel Load L L H Complement L H L Shift Left L H H Shift Right H L L Count Down H L H Clear H H L Count Up H H H Hold Truth Table Q 0 = LSB Inputs Outputs MR S 2 S 1 S 0 CEP D 0/CET D 3 CP Q 3 Q 2 Q 1 Q 0 TC Mode LLLL X X X N P 3 P 2 P 1 P 0 L Preset (Parallel Load) LLL H X X X N Q 3 Q 2 Q 1 Q 0 L Invert L LHL X X X N D 3 Q 3 Q 2 Q 1 D 3 Shift to LSB LL H H X X X N Q 2 Q 1 Q 0 D 0 Q 3(Note 1) Shift to MSB LHL L L L X N (Q 0–3) minus 1 1 Count Down LHL L H L X X Q 3 Q 2 Q 1 Q 0 1 Count Down with CEP not active LHL L X H X X Q 3 Q 2 Q 1 Q 0 H Count Down with CET not active LHLH X X X N LLLL H Clear LH HL L L X N (Q 0–3) plus 1 2 Count Up LH HL H L X X Q 3 Q 2 Q 1 Q 0 2 Count Up with CEP not active LH HL X H X X Q 3 Q 2 Q 1 Q 0 H Count Up with CET not active L HHH X X X X Q 3 Q 2 Q 1 Q 0 H Hold H LLL X X X X LLLL L H L L H X X X X LLLL L HLHL X X X X LLLL L H L H H X X X X LLLL L Asynchronous H H LL X L X X LLLL L Master Reset H H LL X H X X LLLL H H H L H X X X X LLLL H H H H L X X X X LLLL H HHHH X X X X LLLL H 1 = Lif Q0–Q3 = LLLL HifQ0–Q3 ≠ LLLL 2 = Lif Q0–Q3 = HHHH HifQ0–Q3 ≠ HHHH H = HIGH Voltage Level L = LOW Voltage Level X = Don’t Care N = LOW-to-HIGH Transition Note 1: Before the clock, TC is Q3 After the clock, TC is Q2 www.national.com 4 |
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