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DM54L74J датащи(PDF) 1 Page - National Semiconductor (TI) |
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DM54L74J датащи(HTML) 1 Page - National Semiconductor (TI) |
1 / 4 page TLF6631 June 1989 DM54L74 Dual Positive-Edge-Triggered D Flip-Flops with Preset Clear and Complementary Outputs General Description This device contains two independent positive-edge-trig- gered D flip-flops with complementary outputs The informa- tion on the D input is accepted by the flip-flops on the posi- tive going edge of the clock pulse The triggering occurs at a voltage level and is not directly related to the transition time of the rising edge of the clock The data on the D input may be changed while the clock is low or high without af- fecting the outputs as long as the data setup and hold times are not violated A low logic level on the preset or clear inputs will set or reset the outputs regardless of the logic levels of the other inputs Connection Diagram Dual-In-Line Package TLF6631 – 1 Order Number DM54L74J or DM54L74W See NS Package Number J14A or W14B Function Table Inputs Outputs PR CLR CLK D Q Q LH X X H L HL X X L H LL X X H H HH u HH L HH u LL H HH L X QO QO H e High Logic Level X e Either Low or High Logic Level L e Low Logic Level u e Positive-going transition QO e The output logic level of Q before the indicated input conditions were established e This configuration is nonstable that is it will not persist when either the preset andor clear inputs returned to their inactive (high) level C1995 National Semiconductor Corporation RRD-B30M105Printed in U S A |
Аналогичный номер детали - DM54L74J |
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Аналогичное описание - DM54L74J |
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