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74HC181N Datasheet(PDF) 4 Page - NXP Semiconductors |
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74HC181N Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 20 page 1998 Jun 10 4 Philips Semiconductors Product specification 4-bit arithmetic logic unit 74HC/HCT181 PIN DESCRIPTION PIN NO. SYMBOL NAME AND FUNCTION 1, 22, 20, 18 B0 to B3 operand inputs (active LOW) 2, 23, 21, 19 A0 to A3 operand inputs (active LOW) 6, 5, 4, 3 S0 to S3 select inputs 7Cn carry input 8 M mode control input 9, 10, 11, 13 F0 to F3 function outputs (active LOW) 12 GND ground (0 V) 14 A=B comparator output 15 P carry propagate output (active LOW) 16 Cn+4 carry output 17 G carry generate output (active LOW) 24 VCC positive supply voltage Fig.4 Functional diagram. ok, halfpage MBK219 A0 A1 A2 2 23 21 19 1 22 20 18 15 17 14 16 13 11 10 9 A3 B0 B1 Cn+4 F3 F2 F1 F0 A=B G B2 P B3 7 Cn 6 S0 5 S1 4 S2 3 S3 8M Fig.5 Active HIGH operands - active LOW operands. |
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