CD40182BMS

CD40182BMS December 1992 CMOS Look-Ahead Carry Generator Description The CD40182BMS is a high-speed look-ahead carry generator capable of anticipating a carry across four binary adders or groups of adders. The CD40182BMS is cascadable to perform full look-ahead across n-bit adders. Carry, propagate-carry, and generate-carry functions are provided as enumerated in the terminal designation below. The CD40182BMS, when used in conjuction with the CD40181BMS arithmetic logic unit (ALU), provides full highspeed look-ahead carry capability for up to n-bit words. Each CD40182BMS generates the look-ahead (anticipated carry) across a group of four ALU’s. In addition, other CD40182BMS’s may be employed to anticipate the carry across sections of four look-ahead blocks up to n-bits. Carry inputs and outputs of the CD40181BMS are active-high logic, and carry-generate (G) and carry-propagate (P) outputs are active-low. Therefore the inputs and outputs of the CD40182BMS are compatible. The CD40182BMS is supplied in these 16-lead outline packages: Braze Seal DIP Frit Seal DIP Ceramic Flatpack H4V H1E H6P Features High Voltage Type (20V Rating) Generates High-Speed Carry Across Four Adders or Adder Groups High-Speed Operation - tPHL, tPLH =100 ns (typ) at VDD = 10V Cascadable for Fast Carries Over N Bits Designed for Use with CD40181BMS ALU 100% Tested for Quiescent Current at 20V 5V, 10V and 15V Parametric Ratings Standardized Symmetrical Output Characteristics Maximum Inp...