What would we do without them?
+---+--+---+ Q3 |1 +--+ 16| Q2 Q4 |2 15| Q1 GND |3 14| /RST GND |4 74 13| VCC GND |5 303 12| VCC Q5 |6 11| CLK Q6 |7 10| /PRE /Q7 |8 9| /Q8 +----------+
+---+--+---+ Q3 |1 +--+ 16| Q2 Q4 |2 15| Q1 GND |3 14| /RST GND |4 74 13| VCC GND |5 304 12| VCC Q5 |6 11| CLK Q6 |7 10| /PRE Q7 |8 9| Q8 +----------+
+---+--+---+ Q3 |1 +--+ 16| Q2 Q4 |2 15| Q1 GND |3 14| /RST GND |4 74 13| VCC GND |5 305 12| VCC /Q5 |6 11| CLK /Q6 |7 10| /PRE /Q7 |8 9| /Q8 +----------+
+---+--+---+ +---+---*---+ /1OE |1 +--+ 8| 1Y | A |/OE| Y | 1A |2 74 7| VCC +===+===*===+ GND |3 306 6| 1A | 0 | 0 | 0 | /2OE |4 5| 2Y | 1 | 0 | 1 | +----------+ | X | 1 | Z | +---+---*---+
+---+--+---+ /OE |1 +--+ 20| VCC SH//LD |2 19| E//D D |3 18| /SEXT P0 |4 17| E P2 |5 74 16| P1 P4 |6 322 15| P3 P6 |7 14| P5 /OE |8 13| P7 /RST |9 12| Q7 GND |10 11| CLK +----------+
+---+--+---+ S0 |1 +--+ 20| VCC /OE1 |2 19| S1 /OE2 |3 18| D P6 |4 17| Q7 P4 |5 74 16| P7 P2 |6 323 15| P5 P0 |7 14| P3 Q0 |8 13| P1 /RST |9 12| CLK GND |10 11| L +----------+
+---+--+---+ GND |1 +--+ 16| 1Y1 1Y2 |2 15| SEL1 2Y1 |3 14| VCC GND |4 74 13| SEL2 2Y2 |5 328 12| A 3Y1 |6 11| VCC GND |7 10| SEL3 4Y1 |8 9| SEL4 +----------+
+---+--+---+ GND |1 +--+ 16| 1Y1 1Y2 |2 15| SEL1 2Y1 |3 14| VCC GND |4 74 13| SEL2 2Y2 |5 329 12| A 3Y1 |6 11| VCC GND |7 10| SEL3 4Y1 |8 9| SEL4 +----------+
+---+--+---+ GND |1 +--+ 24| OEQ Q1 |2 23| Q3 Q2 |3 22| CLKQ GND |4 21| VCC X1 |5 20| RST OEX |6 74 19| X3 CLKX |7 330 18| GND X2 |8 17| X4 GND |9 16| VCC Y1 |10 15| OEY Y2 |11 14| Y3 GND |12 13| CLKY +----------+
+---+--+---+ Y3 |1 +--+ 20| Y2 GND |2 19| GND Y4 |3 18| Y1 VCC |4 17| VCC /OE |5 74 16| CLK /RST |6 337 15| GND VCC |7 14| VCC Q1 |8 13| Q4 GND |9 12| GND Q2 |10 11| Q3 +----------+
+---+--+---+ GND |1 +--+ 20| /OE Y1 |2 19| VCC GND |3 18| DF Y2 |4 17| VCC GND |5 74 16| CLKIN GND |6 338 15| GND Y3 |7 14| HF GND |8 13| VCC Y4 |9 12| /RST GND |10 11| VCC +----------+
+---+--+---+ Y3 |1 +--+ 20| Y2 GND |2 19| GND Y4 |3 18| Y1 VCC |4 17| VCC /OE |5 74 16| CLK /RST |6 339 15| GND VCC |7 14| VCC Q1 |8 13| Q4 GND |9 12| GND Q2 |10 11| Q3 +----------+
+---+--+---+ VCC |1 +--+ 20| VCC E1 |2 19| Q1 E2 |3 18| Q2 IN |4 17| GND P0 |5 74 16| Q3 P1 |6 340 15| Q4 VCC |7 14| GND Q8 |8 13| Q5 Q7 |9 12| Q6 GND |10 11| GND +----------+
+---+--+---+ /A4 |1 +--+ 16| VCC /A5 |2 15| /EO /A6 |3 14| /GS /A7 |4 74 13| /A3 /EI |5 348 12| /A2 Y2 |6 11| /A1 Y1 |7 10| /A0 GND |8 9| Y0 +----------+
+---+--+---+ /1EN |1 +--+ 16| VCC S1 |2 15| /2EN 1A3 |3 14| S0 1A2 |4 74 13| 2A3 1A1 |5 352 12| 2A2 1A0 |6 11| 2A1 1Y |7 10| 2A0 GND |8 9| 2Y +----------+
+---+--+---+ /1EN |1 +--+ 16| VCC S1 |2 15| /2EN 1A3 |3 14| S0 1A2 |4 74 13| 2A3 1A1 |5 353 12| 2A2 1A0 |6 11| 2A1 /1Y |7 10| 2A0 GND |8 9| /2Y +----------+
+---+--+---+ A7 |1 +--+ 20| VCC A6 |2 19| Y A5 |3 18| /Y A4 |4 17| OE3 A3 |5 74 16| /OE2 A2 |6 354 15| /OE1 A1 |7 14| A0 A0 |8 13| A1 DLE |9 12| A2 GND |10 11| ALE +----------+
+---+--+---+ A7 |1 +--+ 20| VCC A6 |2 19| Y A5 |3 18| /Y A4 |4 17| OE3 A3 |5 74 16| /OE2 A2 |6 356 15| /OE1 A1 |7 14| A0 A0 |8 13| A1 DLE |9 12| A2 GND |10 11| ALE +----------+
+---+--+---+ +---+---*---+ /OE1 |1 +--+ 16| VCC |/OE| A | Y | A1 |2 15| /OE2 +===+===*===+ Y1 |3 14| A6 | 1 | X | Z | A2 |4 74 13| Y6 | 0 | 0 | 0 | Y2 |5 365 12| A5 | 0 | 1 | 1 | A3 |6 11| Y5 +---+---*---+ Y3 |7 10| A4 GND |8 9| Y4 +----------+
+---+--+---+ +---+---*---+ /OE1 |1 +--+ 16| VCC |/OE| A |/Y | A1 |2 15| /OE2 +===+===*===+ /Y1 |3 14| A6 | 1 | X | Z | A2 |4 74 13| /Y6 | 0 | 0 | 1 | /Y2 |5 366 12| A5 | 0 | 1 | 0 | A3 |6 11| /Y5 +---+---*---+ /Y3 |7 10| A4 GND |8 9| /Y4 +----------+
+---+--+---+ +---+---*---+ /1OE |1 +--+ 16| VCC |/OE| A | Y | 1A1 |2 15| /2OE +===+===*===+ 1Y1 |3 14| 2A2 | 1 | X | Z | 1A2 |4 74 13| 2Y2 | 0 | 0 | 0 | 1Y2 |5 367 12| 2A1 | 0 | 1 | 1 | 1A3 |6 11| 2Y1 +---+---*---+ 1Y3 |7 10| 1A4 GND |8 9| 1Y4 +----------+
+---+--+---+ +---+---*---+ /1OE |1 +--+ 16| VCC |/OE| A |/Y | 1A1 |2 15| /2OE +===+===*===+ /1Y1 |3 14| 2A2 | 1 | X | Z | 1A2 |4 74 13| /2Y2 | 0 | 0 | 1 | /1Y2 |5 368 12| 2A1 | 0 | 1 | 0 | 1A3 |6 11| /2Y1 +---+---*---+ /1Y3 |7 10| 1A4 GND |8 9| /1Y4 +----------+
+---+--+---+ +---+---+---*---+ /OE |1 +--+ 20| VCC |/OE| LE| D | Q | Q1 |2 19| Q8 +===+===+===*===+ D1 |3 18| D8 | 1 | X | X | Z | D2 |4 17| D7 | 0 | 0 | X | - | Q2 |5 74 16| Q7 | 0 | 1 | 0 | 0 | Q3 |6 373 15| Q6 | 0 | 1 | 1 | 1 | D3 |7 14| D6 +---+---+---*---+ D4 |8 13| D5 Q4 |9 12| Q5 GND |10 11| LE +----------+
+---+--+---+ +---+---+---*---+ /OE |1 +--+ 20| VCC |/OE|CLK| D | Q | Q1 |2 19| Q8 +===+===+===*===+ D1 |3 18| D8 | 1 | X | X | Z | D2 |4 17| D7 | 0 | / | 0 | 0 | Q2 |5 74 16| Q7 | 0 | / | 1 | 1 | Q3 |6 374 15| Q6 | 0 |!/ | X | - | D3 |7 14| D6 +---+---+---*---+ D4 |8 13| D5 Q4 |9 12| Q5 GND |10 11| CLK +----------+
+---+--+---+ 1D1 |1 +--+ 16| VCC /1Q1 |2 15| 2D1 1Q1 |3 14| /2Q1 1LE |4 74 13| 2Q1 1Q2 |5 375 12| 2LE /1Q2 |6 11| 2Q2 1D2 |7 10| /2Q2 GND |8 9| 2D2 +----------+
+---+--+---+ +---+---+---+----*---+---+ /RST |1 +--+ 16| VCC | J |/K |CLK|/RST| Q |/Q | J1 |2 15| J4 +===+===+===+====*===+===+ /K1 |3 14| /K4 | X | X | X | 0 | 0 | 1 | Q1 |4 74 13| Q4 | 0 | 0 | / | 1 | 0 | 1 | Q2 |5 376 12| Q3 | 0 | 1 | / | 1 | - | - | /K2 |6 11| /K3 | 1 | 0 | / | 1 |/Q | Q | J2 |7 10| J3 | 1 | 1 | / | 1 | 1 | 0 | GND |8 9| CLK | X | X |!/ | 1 | - | - | +----------+ +---+---+---+----*---+---+
+---+--+---+ +----+---+---*---+ /CLKEN |1 +--+ 20| VCC |/CEN|CLK| D | Q | Q1 |2 19| Q8 +====+===+===*===+ D1 |3 18| D8 | 1 | X | X | - | D2 |4 17| D7 | 0 | / | 0 | 0 | Q2 |5 74 16| Q7 | 0 | / | 1 | 1 | Q3 |6 377 15| Q6 | 0 |!/ | X | - | D3 |7 14| D6 +----+---+---*---+ D4 |8 13| D5 Q4 |9 12| Q5 GND |10 11| CLK +----------+
+---+--+---+ +----+---+---*---+ /CLKEN |1 +--+ 16| VCC |/CEN|CLK| D | Q | Q1 |2 15| Q6 +====+===+===*===+ D1 |3 14| D6 | 1 | X | X | - | D2 |4 74 13| D5 | 0 | / | 0 | 0 | Q2 |5 378 12| Q5 | 0 | / | 1 | 1 | D3 |6 11| D4 | 0 |!/ | X | - | Q3 |7 10| Q4 +----+---+---*---+ GND |8 9| CLK +----------+
+---+--+---+ +----+---+---*---+---+ /CLKEN |1 +--+ 16| VCC |/CEN|CLK| D | Q |/Q | Q1 |2 15| Q4 +====+===+===*===+===+ /Q1 |3 14| /Q4 | 1 | X | X | - | - | D1 |4 74 13| D4 | 0 | / | 0 | 0 | 1 | D2 |5 379 12| D3 | 0 | / | 1 | 1 | 0 | /Q2 |6 11| /Q3 | 0 |!/ | X | - | - | Q2 |7 10| Q3 +----+---+---*---+---+ GND |8 9| CLK +----------+
+---+--+---+ A1 |1 +--+ 20| VCC B1 |2 19| A2 A0 |3 18| B2 B0 |4 17| A3 S0 |5 74 16| B3 S1 |6 381 15| CIN S2 |7 14| /P F0 |8 13| /G F1 |9 12| F3 GND |10 11| F2 +----------+
+---+--+---+ A1 |1 +--+ 20| VCC B1 |2 19| A2 A0 |3 18| B2 B0 |4 17| A3 S0 |5 74 16| B3 S1 |6 382 15| CIN S2 |7 14| COUT F0 |8 13| OVR F1 |9 12| F3 GND |10 11| F2 +----------+
+---+--+---+ CLK |1 +--+ 20| VCC 1S |2 19| 4S 1S//A |3 18| 4S//A 1B |4 17| 4B 1A |5 74 16| 4A 2A |6 385 15| 3A 2B |7 14| 3B 2S//A |8 13| 3S//A 2S |9 12| 3S GND |10 11| RST +----------+
+---+--+---+ +---+---*---+ _ _ 1A |1 +--+ 14| VCC | A | B | Y | Y = A$B = (A.B)+(A.B) 1B |2 13| 4B +===+===*===+ 1Y |3 74 12| 4A | 0 | 0 | 0 | 2Y |4 386 11| 4Y | 0 | 1 | 1 | 2A |5 10| 3Y | 1 | 0 | 1 | 2B |6 9| 3B | 1 | 1 | 0 | GND |7 8| 3A +---+---*---+ +----------+
+---+--+---+ /1CLK0 |1 +--+ 16| VCC 1RST |2 15| /2CLK0 1Q0 |3 14| 2RST /1CLK1 |4 74 13| 2Q0 1Q1 |5 390 12| /2CLK1 1Q2 |6 11| 2Q1 1Q3 |7 10| 2Q2 GND |8 9| 2Q3 +----------+
+---+--+---+ /1CLK |1 +--+ 14| VCC 1RST |2 13| /2CLK 1Q0 |3 74 12| 2RST 1Q1 |4 393 11| 2Q0 1Q2 |5 10| 2Q1 1Q3 |6 9| 2Q2 GND |7 8| 2Q3 +----------+
+---+--+---+ /RST |1 +--+ 16| VCC D |2 15| Y0 P0 |3 14| Y1 P1 |4 74 13| Y2 P2 |5 395 12| Y3 P3 |6 11| Q3 LD//SH |7 10| CLK GND |8 9| /OE +----------+
+---+--+---+ S |1 +--+ 20| VCC 1Y |2 19| 4Y /1Y |3 18| /4Y 1A0 |4 17| 4A0 1A1 |5 74 16| 4A1 2A1 |6 398 15| 3A1 2A0 |7 14| 3A0 /2Y |8 13| /3Y 2Y |9 12| 3Y GND |10 11| CLK +----------+
+---+--+---+ S |1 +--+ 16| VCC 1Y |2 15| 4Y 1A0 |3 14| 4A0 1A1 |4 74 13| 4A1 2A1 |5 399 12| 3A1 2A0 |6 11| 3A0 2Y |7 10| 3Y GND |8 9| CLK +----------+