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TC74AC161F Arkusz danych(PDF) 2 Page - Toshiba Semiconductor |
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TC74AC161F Arkusz danych(HTML) 2 Page - Toshiba Semiconductor |
2 / 15 page TC74AC161,163P/F/FN/FT 2007-10-01 2 Pin Assignment IEC Logic Symbol Truth Table (Note) Inputs Outputs CLR (161) CLR (163) LOAD ENP ENT CK (161) CK (163) QA QB QC QD Function L L X X X X L L L L Reset to “0” H H L X X A B C D Preset Data H H H X L No Change No Count H H H L X No Change No Count H H H H H Count Up Count H X X X X No Change No Count Note: X: Don’t care A, B, C, D: Logic level of data inputs Carry: Carry = ENT·QA·QB·QC·QD VCC 16 Carry Output QA QB 15 14 13 12 11 10 CLR 1 2 3 4 5 6 7 B C D ENP GND QC 8 LOAD 9 QD ENT (top view) CK A (9) (1) (10) (2) (7) ENP 1, 5D (1) CK (3) (4) B A (15) (14) QB (13) QA QC CT = 0 M1 LOAD CLR C (5) (6) D (12) QD (11) Carry Output ENT TC74AC161 CTRDIV 16 M2 G3 G4 C5/2, 3, 4+ 3CT = 15 (2) (4) (8) (9) (1) (10) (2) (7) ENP 1, 5D (1) CK (3) (4) B A (15) (14) QB (13) QA QC 5CT = 0 M1 LOAD CLR C (5) (6) D (12) QD (11) Carry Output ENT TC74AC163 CTRDIV 16 M2 G3 G4 C5/2, 3, 4+ 3CT = 15 (2) (4) (8) |
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