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74AS160 Datasheet(PDF) 3 Page - Texas Instruments |
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74AS160 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 11 page SN54ALS161B, SN54ALS163B, SN54AS161, SN54AS163 SN74ALS161B, SN74ALS163B, SN74AS161, SN74AS163 SYNCHRONOUS 4-BIT BINARY COUNTERS SDAS024A – D2661, APRIL 1982 – REVISED MAY 1986 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 logic symbols† 9 LOAD CLR 1 ENT 10 ENP 7 CLK 2 A 3 B 4 C 5 D 6 CTRDIV16 3CT = 15 15 RCO QA 14 QB 13 QC 12 QD 11 5CT=0 M1 M2 G3 G4 C5/2,3,4+ 1,5D [1] [2] [4] [8] [8] [4] [2] [1] 1,5D C5/2,3,4+ G4 G3 M2 M1 CT=0 11 QD 12 QC 13 QB 14 QA RCO 15 3CT = 15 CTRDIV16 6 D 5 C 4 B 3 A 2 CLK 7 ENP 10 ENT 1 CLR LOAD 9 ’ALS161B AND ’AS161 BINARY COUNTERS WITH DIRECT CLEAR ’ALS163B AND ’AS163 BINARY COUNTERS WITH SYNCHRONOUS CLEAR ’ALS163B and ’AS163 logic diagram (positive logic) 10 6 D C 5 4 B 11 QD 1D C1 12 QC 1D C1 C1 1D 15 RCO QA 14 QB 13 9 LOAD CLR 1 ENT ENP 7 CLK 2 A 3 1D C1 † These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for D, J, and N packages. ’ALS161B and ’AS161 synchronous binary counters are similar; however the clear is asynchronous as shown for the ’ALS160B and ’AS160 decade counters. |
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