TTL Logic Diagrams (cont'd) TTT TT | B2 a2 At Bt = =6A0 BO [Lie att ae A>B A=B As OUT OUT OUT LULA Te fishers! A<B A=B A>B,A>B A~8 A<B, GND CASCADING INPUTS OUTPUTS 4-Bit Magnitude Comparator Diag. 74 14-Pin DIP See Fig. D6 J Diag. 75 16-Pin DIP See Fig. D8 ECG7482 ECG7483, ECG74LS83A A2 82 2 GND 2 NC. AC a ni} 8 Q4 4 C4 CO GND 81 Al 21 | | ws fal fal fiz ifn lol fs B27 ca | | | | | A2 4 ca co B81 Al - Liege "1 1 Al 81 co , n | T T T T T Tilers Pisa w2atefshef7ts Bt al 81 Vcc co NC nc Af 53 AI B3 Vec 2 82 A2 2-Bit Binary Full Adder 4-Bit Full Adder Diag. 76 16-Pin DIP See Fig. D8 | Diag. 77 16-Pin DIP See Fig. D8 Diag. 78 14-Pin DIP See Fig. D6 ECG7485, ECG74LS85 ECG74C85 ECG7486, ECG74H86, ECG74HC86, . ECG74LS86, ECG74S86 DATA INPUTS. INPUTS ouTPuTS INPUTS , Veo AR B2 AZ Al Bl ADiO Yeo a3. BS) ADB AB BO ES) Bi 6 Us twill lo lf WEL 1S [v4 p13 1 2 Ly tr Ly Ly 8 iL | | 7 7 TT as a3 A>B A<B_ BO Ad OUTPUT OUTPUT B2 BI A=-B A>B A<B a=B A2 OUTPUT INPUT INPUT INPUT al til2eTs fiefs fret atts A>B A<B AeB At INPUT CASCADE INPUTS 92 az, AnvB GND Neem! OUTPUT INPUTS 4-Bit Magnitude Comparator Quad Exclusive OR Gate Diag. 79 14-Pin DIP See Fig. D6 ECG74H87 Voc AS YS NC ABB 8 4 93 12 tt LJ 8 8 aa vA a3 V3 se B AY oy A2___v2 1 2 3 4 6 ? Cc Al oYt NG) 8 A222 GND 4-Bit True/Complement Zero/One Element Diag. 80 ECG7489 SELECT INPUTS 16-Pin DIP See Fig. D8 DATA SENSE DATA SENSE sNPUT OUTPUT INPUT OUTPUT SELECT \MEM. WRITE/ DATA SENSE DATA SENSE INPUT A SAE! INPUT OUTPUT INPUT OUTPUT ENABLES 1 1 2 2 64-Bit RAM (16 x 4) Diag. 81 14-Pin DIP See Fig. D6 ECG7490, ECG74C90, ECG74LS90 1 2 3 4 $ 8 ? ur Ports = Roxas veo WU ry Decade Counter Diag. 82 ECG7491, ECG74LS91 14-Pin DIP See Fig. D6 INPUT INPUT A a Ou Oy GND CLOCK NC 8-Bit Serial Shift Register Diag. 83 , IECG7492, ECG74LS92 14-Pin DIP See Fig. D6 Ra Rows Divide-by-12 Counter Diag. 84 _ 14-Pin DIP See Fig. D6 ECG7493A, ECG74LS93 wneuy Fon = Row) 4-Bit Binary Counter Package Outlines - See Page 1-357