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CD54AC163F Datasheet(PDF) 2 Page - Texas Instruments |
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CD54AC163F Datasheet(HTML) 2 Page - Texas Instruments |
2 / 11 page CD54AC163, CD74AC163 4-BIT SYNCHRONOUS BINARY COUNTERS SCHS299 – APRIL 2000 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 FUNCTION TABLE INPUTS OUTPUTS FUNCTION CLR CLK ENP ENT LOAD A,B,C,D Qn RCO FUNCTION L ↑ X X X X L L Reset (clear) h ↑ X X l l L L Parallel load h ↑ XX l h H Note 1 Parallel load h ↑ h h h X Count Note 1 Count h X l X h X qn Note 1 Inhibit h X X l h X qn L Inhibit H = high level, L = low level, X = don’t care, h = high level one setup time prior to the CLK low-to-high transition, l = low level one setup time prior to the CLK low-to-high transition, q = the state of the referenced output prior to the CLK low-to-high transition, ↑ = CLK low-to-high transition. NOTE 1: The RCO output is high when ENT is high and the counter is at terminal count (HHHH). logic symbol† † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 14 13 12 11 CTRDIV16 LOAD 1,5D 3 A 4 B 5 C 6 D 5CT=0 1 M2 M1 9 C5/2,3,4+ G3 10 ENT RCO 15 3CT=15 QA QB QC QD G4 7 ENP 2 CLK CLR [1] [2] [4] [8] |
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