Motorola 4581 free download

File name 4581.pdf

MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC14581B 4-Bit Arithmetic Logic Unit The MC14581B is a CMOS 4­bit ALU capable of providing 16 functions of two Boolean variables and 16 binary arithmetic operations on two 14­bit words. The level of the mode control input determines whether the output function is logic or arithmetic. The desired logic function is selected by applying the appropriate binary word to the select inputs (S0 thru S3) with the mode control input high, while the desired arithmetic operation is selected by applying a low voltage to the mode control input, the required level to carry in, and the appropriate word to the select inputs. The word inputs and function outputs can be operated with either active high or active low data. Carry propagate (P) and carry generate (G) outputs are provided to allow a full look­ahead carry scheme for fast simultaneous carry generation for the four bits in the package. Fast arithmetic operations on long words are obtainable by using the MC14582B as a second order look ahead block. An inverted ripple carry input (Cn) and a ripple carry output (Cn+4) are included for ripple through operation. When the device is in the subtract mode (LHHL), comparison of two 4­bit words present at the A and B inputs is provided using the A = B output. It assumes a high­level state when indicating equality. Also, when the ALU is in the subtract mode the Cn+4 output can be used to indicate relative magnitude as shown in this table: Data Level Active High Cn H L H L L H L H Cn+4 H H L L L L H H Magnitude A B AB A B L SUFFIX CERAMIC CASE 623 P SUFFIX PLASTIC CASE 709 DW SUFFIX SOIC CASE 751E ORDERING INFORMATION MC14XXXBCP MC14XXXBCL MC14XXXBDW Plastic Ceramic SOIC TA = ­ 55° to 125°C for all packages. PIN ASSIGNMENT v B0 A0 S3 S2 S1 S0 Cn MC F0 F1 F2 VSS 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VDD A1 B1 A2 B2 A3 B3 G Cn+4 P A=B F3 Active Low w AvB AB A B w ООООООООООООООООООООО ООООООООООООООООООООО ООООООООООООООООООООО ООООООООООООООООООООО MAXIMUM RATINGS* (Voltages Referenced to VSS) Symbol VDD Parameter DC Supply Voltage Value Unit V V ­ 0.5 to + 18.0 ± 10 500 ­ 65 to + 150 260 Vin, Vout Iin, Iout PD Tstg TL Input or Output Voltage (DC or Transient) ­ 0.5 to VDD + 0.5 Input or Output Current (DC or Transient), per Pin Power Dissipation, per Package Storage Temperature Lead Temperature (8­Second Soldering) mA mW · · · · · Functional and Pinout Equivalent to 74181. Diode Protection on All Inputs All Outputs Buffered Supply Voltage Range = 3.0 Vdc to 18 Vdc Capable of Driving Two Low­power TTL Loads or One Low­power Schottky TTL Load over the Rated Temperature Range _C _C * Maximum Ratings are those values beyond which damage to the device may occur. Temperature Derating: Plastic "P and D/DW" Packages: ­ 7.0 mW/_C From 65_C To 125_C Ceramic "L" Packages: ­ 12 mW/_C From 100_C To 125_C REV 3 1/94 ©MOTOROLA CMOS LOGIC DATA Motorola, Inc. 1995 MC14581B 1 ОООООООООООООООО