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Part: 74F583SCX
Category:
Description: 4-Bit BCD Adder
Company: Fairchild Semiconductor
Datasheet: Download 74F583SCX datasheet File size : 202 kB
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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, B0B3) and a Carry Input (Cn). It generates the decimal sum outputs (S0S3), 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 A0A3 B0B3 Cn S0S3 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
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74F583
Functional Description
The 'F583 4-bit binary coded (BCD) full adder performs the addition of two decimal numbers (A0A3, B0B3). The lookahead generates the BCD carry terms internally, allowing the 'F583 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 the addition of two BCD numbers totalling a number greater than 9, a valid BCD number and a 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 any 4bit 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 through cascading 'F583s.
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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74F583
Absolute Maximum Ratings(Note 1)
Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Plastic VCCPin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Output in HIGH State (with VCC = 0V) Standard Output 3-STATE Output Current Applied to Output in LOW State (Max) twice the rated IOL (mA) -0.5V to VCC -0.5V to +5.5V -0.5V to +7.0V -0.5V to +7.0V -30 mA to +5.0 mA -65°C to +150°C -55°C to +125°C -55°C to +175°C -55°C to +150°C
Recommended Operating Conditions
Free Air Ambient Temperature Commercial Supply Voltage Commercial +4.5V to +5.5V
Note 1: Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions is not implied. Note 2: Either voltage limit or current limit is sufficient to protect inputs.
0°C to +70°C
DC Electrical Characteristics
Symbol VIH VIL VCD VOH VOL IIH IBVI IIL IOS IC E X ICCL Parameter Min Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage Output LOW Voltage Input HIGH Current Input HIGH Current Breakdown Test Input LOW Current Output Short-Circuit Current Output HIGH Leakage Current Power Supply Current 40 -60 - 0.6 - 1.2 -150 250 60 mA µA mA Max Max Max mA Max VIN = 0.5V (Cn) VIN = 0.5V (An, Bn) VOUT = 0V VOUT = VCC VO = LOW 20 100 µA µA Max Max VIN = 2.7V VIN = 7.0V 74F 10% VCC 74F 5% VCC 74F 10% VCC 2.5 2.7 0.5 V Min 2.0 0.8 - 1.2 74F Typ Max V V V V Min Min Recognized as a HIGH Signal Recognized as a LOW Signal IIN = -18 mA IOH = -1 mA IOH = -1 mA IOL = 20 mA Units V CC Conditions
AC Electrical Characteristics
74F TA = +25°C Symbol Parameter VCC = +5.0V CL = 50 pF Min tPLH tPHL tPLH tPHL tPLH tPHL Propagation Delay An or Bn to Sn Propagation Delay Cn to Cn+4 Propagation Delay An or Bn to Cn+4 2 .5 2.5 2 .5 2.5 4 .0 4.0 Typ 13.0 11.0 6.5 5 .0 11.0 8 .0 Max 16.5 14.0 8 .5 6.5 14.0 10.5 M in 2 .5 2 .5 2.5 2 .5 4 .0 4 .0 Max 17.5 15.0 9 .5 7.5 15.0 11.5 ns ns ns 74F TA, VCC = Com CL = 50 pF Units
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74F583
Physical Dimensions inches (millimeters) unless otherwise noted
16-Lead Small Outline Intergrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide Package Number M16B
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N16E
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74F583 4-Bit BCD Adder
LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.
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