74F583 Datasheet | Philips Semiconductors

FEATURES - Adds two decimal numbers - Full internal look-ahead - Fast ripple carry for economical expansion - Sum output delay 19.5 ns max. - Ripple carry delay 8.5 ns max. - Input to ripple delay 13.0 ns max. - Supply current 60 m A max. DESCRIPTION The 74F583 4-bit coded (BCD) full adder performs the addition of two decimal numbers (A0- A3, B0- B3). The look-ahead generates BCD carry terms internally, allowing the 74F583 to then do BCD addition correctly. For BCD numbers 0 through 9 at A and B inputs, the BCD sum forms at the output. In addition of two BCD numbers totalling a number greater than 9, a valid BCD number and carry will result. For input values larger than 9, the number is converted from binary to BCD. Binary to BCD conversion occurs by grounding one set of inputs, An or Bn, and applying a 4-bit binary number to the other set of inputs. If the input is between 0 and 9, a BCD number occurs at the output. If the binary input falls between 10 and 15, a carry term is generated. Both the carry term and the sum are the BCD equivalent of the binary input. Converting binary numbers greater than 16 may be achieved by cascading 74F583s. PIN CONFIGURATION B1 1 B2 B3 A3 Cn Cn+4 S2 GND 2 3 4 5 6 7 8 16 VCC 15 A2 14 A1 13 A0 12 B0 11 S0 10 S1 9 S3 SF01436 TYPE 74F583 TYPICAL PROPAGATION DELAY 9.0 ns TYPICAL SUPPLY CURRENT (TOTAL) 45 m A ORDERING INFORMATION PACKAGE 16-pin plastic DIP 16-pin plastic SO MERCIAL RANGE VCC = 5 V ±10% Tamb = 0°C to +70°C N74F583N N74F583D DRAWING NUMBER SOT38-4 SOT109-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS A0- A3 B0- B3 Cn Cn+4 S0- S3 A operand inputs B operand inputs Carry input Carry output Sum outputs DESCRIPTION 74F (U.L.) HIGH / LOW 1.0 / 2.0 1.0 / 2.0 1.0 / 1.0 50 / 33 50 / 33 LOAD VALUE HIGH / LOW 20 µA / 1.2 m A 20 µA / 1.2 m A 20 µA / 0.6 m A 1.0 m A / 20 m A 1.0 m A / 20 m A NOTE: One (1.0) FAST Unit Load is defined as 20 µA in the High state and 0.6 m A in the Low state. LOGIC SYMBOL 13 12 14 1 15 2 4 3 LOGIC SYMBOL...