|Category||Logic => Arithmetic Functions => Bipolar->F Family|
|Description||4-Bit BCD Adder|
|Datasheet||Download 74F583 datasheet
The 'F583 high-speed 4-bit, BCD full adder with internal carry lookahead accepts two 4-bit decimal numbers 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
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
74F Pin Names + 4 Description U.L. Input IIH/IIL mA/20 mA HIGH/LOW Output IOH/IOL A Operand Inputs B Operand Inputs Carry Input Sum Outputs Carry Output
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 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.
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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 to +150°CFree Air Ambient Temperature Commercial Supply Voltage Commercial 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.
Symbol VIH VIL VCD VOH VOL IIH IBVI IIL IOS ICEX 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 µA mA Max mA Max VIN = 0.5V (Cn) VIN = 0.5V (An, Bn) VOUT = 0V VOUT = VCC VO = LOW 100 µA Max VIN = 2.7V VIN 74F 10% VCC 74F 5% VCC 74F 10% VCC 0.5 V Min -1.2 74F Typ Max Min Recognized as a HIGH Signal Recognized as a LOW Signal IIN -18 mA IOH -1 mA IOH -1 mA IOL 20 mA Units VCC Conditions
= +25°C Symbol Parameter VCC 50 pF Min tPLH tPHL tPLH tPHL tPLH tPHL Propagation Delay to Sn Propagation Delay to Cn+4 Propagation Delay to Cn+4 Typ Max Min Max ns 74F TA, VCC = Com 50 pF Units
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