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DM74LS47 Arkusz danych(PDF) 5 Page - Fairchild Semiconductor |
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DM74LS47 Arkusz danych(HTML) 5 Page - Fairchild Semiconductor |
5 / 8 page Logic Symbol Truth Table Decimal Inputs Outputs or Note Function LT RBI A3 A2 A1 A0 BI/RBO a b c d e f g 0 H H LLLL H LLLLLL H (Note 7) 1 H X L L L H H H L L HHHH (Note 7) 2 H X L L H L H L LHL LHL 3 H X L L H H H LLLL H H L 4 H X L H L L H HL LH HL L 5 H X L H L H H LHL LHL L 6 H X L H H L H H H LLLLL 7 H X L H H H H L L L HHHH 8 H X H L L L H LLLLLLL 9 H X H L L H H LLL H H LL 10 H X HLHL H H H H L L H L 11 H X H L H H H H HL LH HL 12 H X H H L L H H L HHH L L 13 H X H H L H H L H HLHL L 14 H X H H H L H H H H LLLL 15 H X HHHH H HHHHHHH BI X X XXXX L HHHHHHH (Note 8) RBI H L LLLL L HHHHHHH (Note 9) LT L X XXXX H LLLLLLL (Note 10) Note 7: BI/RBO is wire-AND logic serving as blanking input (BI ) and/or ripple-blanking output (RBO ). The blanking out (BI ) must be open or held at a HIGH level when output functions 0 through 15 are desired, and ripple-blanking input (RBI ) must be open or at a HIGH level if blanking or a decimal 0 is not desired. X = input may be HIGH or LOW. Note 8: When a LOW level is applied to the blanking input (forced condition) all segment outputs go to a HIGH level regardless of the state of any other input con- dition. Note 9: When ripple-blanking input (RBI) and inputs A0, A1, A2 and A3 are LOW level, with the lamp test input at HIGH level, all segment outputs go to a HIGH level and the ripple-blanking output (RBO ) goes to a LOW level (response condition). Note 10: When the blanking input/ripple-blanking output (BI/RBO ) is open or held at a HIGH level, and a LOW level is applied to lamp test input, all segment outputs go to a LOW level. DS009817-2 VCC = Pin 16 GND = Pin 8 5 www.fairchildsemi.com |
Podobny numer części - DM74LS47_07 |
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Podobny opis - DM74LS47_07 |
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