View m74hc181 datasheet:

M74HC181 ARITHMETIC LOGIC UNIT/FUNCTION GENERATOR .HIGH SPEED t = 13 ns (TYP.) AT V =5V PD CC .LOW POWER DISSIPATION I =4µA (MAX.) at T =25 °C CC A .HIGH NOISE IMMUNITY V =V =28%V (MIN.) NIH NIL CC .OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS .SYMMETRICAL OUTPUT IMPEDANCE ?I ? =I = 4 mA (MIN.) OH OL B1R M1R .BALANCED PROPAGATION DELAYS (Plastic Package) (Micro Package) t =t PLH PHL .WIDE OPERATING VOLTAGE RANGE V (OPR) = 2 V to 6 V CC .PIN AND FUNCTION COMPATIBLE ORDER CODES : WITH 54/74LS181 M74HC181M1R M74HC181B1R DESCRIPTION The 74HC181 is a high speed CMOS ARITHMETIC LOGIC UNIT/FUNCTION GENERATOR fabricated PIN CONNECTIONS (top view) with silicon gate C2MOS technology. It has the same highspeed performance ofLSTTL combined withtrue CMOS low power consumptio