74F583

74F583 4-Bit BCD Adder April 1988 Revised March 1999 74F583 4-Bit BCD Adder General Description The ’F583 high-speed 4-bit, BCD full adder with internal carry lookahead accepts two 4-bit decimal numbers (A0– A3, B0–B3) and a Carry Input (Cn). It generates the decimal sum outputs (S0–S3), and a Carry Output (Cn+4) if the sum is greater than 9. The 'F583 is the functional equivalent of the 82S83. Features s Adds two decimal numbers s Full internal lookahead s Fast ripple carry for economical expansion s Sum output delay time 16.5 ns max s Ripple carry delay time 8.5 ns max s Input to ripple delay time 14.0 ns max s Supply current 60 mA max Ordering Code: Order Number 74F583SC 74F583PC Package Number M16B N16E Package Description 16-Lead Small Outline Intergrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Logic Symbols Connection Diagram IEEE/IEC Unit Loading/Fan Out 74F Pin Names A0–A3 B0–B3 Cn S0–S3 Cn + 4 Description U.L. Input IIH/IIL 20 µA/−1.2 mA 20 µA/−1.2 mA 20 µA/−0.6 mA −1 mA/20 mA −1 mA/20 mA HIGH/LOW Output IOH/IOL A Operand Inputs B Operand Inputs Carry Input Sum Outputs Carry Output 1.0/2.0 1.0/2.0 1.0/1.0 50/33.3 50/33.3 © 1999 Fairchild Semiconductor Corporation DS009570.prf www.fairchildsemi.com 74F583 Functional Description The ’F583 4-bit binary coded (BCD) full adder performs the addition of two decimal numbers (A0–A3, B0–B3). The lookahead generates the BCD carry terms internally...