74F181 Datasheet | National

Description The ’F181 is a 4-bit Arithmetic logic Unit (ALU) which can perform all the possible 16 logic operations on two variables and a variety of arithmetic operations It is 40% faster than the Schottky ALU and only consumes 30% as much power Features Full lookahead for high-speed arithmetic operation on long words Guaranteed 4000V minimum ESD protection mercial 74F181PC 74F181SPC Military Package Number N24A N24C Package Description 24-Lead (0 600 Wide) Molded Dual-In-Line 24-Lead (0 300 Wide) Molded Dual-In-Line 24-Lead Ceramic Dual-In-Line 24-Lead (0 300 ) Ceramic Dual-In-Line 24-Lead (0 300 ) Molded Small Outline JEDEC 24-Lead Cerpack 24-Lead Ceramic Leadless Chip Carrier Type C 54F181DM (Note 2) 54F181SDM (Note 2) 74F181SC (Note 1) 54F181FM (Note 2) 54F181LM (Note 2) Note 1 Devices also available in 13 reel Use suffix e SCX J24A J24F M24B W24C E28A Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB Connection Diagrams Pin Assignment for DIP SOIC and Flatpak Pin Assignment for LCC TL F 9491 - 2 TL F 9491 - 1 TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 9491 RRD-B30M105 Printed in U S A Logic Symbols Active-HIGH Operands Active-LOW Operands IEEE IEC TL F 9491- 3 TL F 9491 - 4 Unit Loading Fan Out 54F 74F Pin Names Description UL Input IIH IIL HIGH LOW Output IOH IOL 10 30 10 30 10 40 10 10 10 50 50 33 3 OC 33 3 50 33 3 50 33 3 50 33 3 20 m A b1 8 m A 20 m A b1 8 m A 20 m A b2 4 m A 20 m A b0 6 m A 20 m A b3 0 m A b 1 m A 20 m A 20 m A b 1 m A 20 m A b 1 m A 20 m A b 1 m A 20 m A TL F 9491 - 10 A 0 - A3 B 0 - B3 S0 - S3 M Cn F0 - F3 Ae B G P Cn a 4 A Operand Inputs (Active LOW) B Operand Inputs (Active LOW) Function Select Inputs Mode Control Input Carry Input Function Outputs (Active LOW) parator Output Carry Generate Output (Active LOW) Carry Propagate Output (Active LOW) Carry Output OC-Open Collector Functional Description The...