描述 Description

The CD40182BMS is a high-speed look-ahead carry gener ator 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.

特性 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 Input Current of 1μA at 18V Over Full Pack

age Temperature Range; 100nA at 18V and +25°C

? Noise Margin (Over Full Package/Temperature Range)

- 1V at VDD = 5V

- 2V at VDD = 10V

- 2.5V at VDD = 15V

? Meets All Requirements of JEDEC Tentative Standard No. 13B, “Standard Specifications for Description of ‘B’ Series CMOS Devices”