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74F583PC

P1-P3P4-P5
April 1988
Revised March 1999
74F583 4-Bit BCD Adder
© 1999 Fairchild Semiconductor Corporation DS009570.prf www.fairchildsemi.com
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 (A
0
–
A
3
, B
0
–B
3
) and a Carry Input (C
n
). It generates the decimal
sum outputs (S
0
–S
3
), and a Carry Output (C
n+4
) if the sum
is greater than 9. The 'F583 is the functional equivalent of
the 82S83.
Features
■ Adds two decimal numbers
■ Full internal lookahead
■ Fast ripple carry for economical expansion
■ Sum output delay time 16.5 ns max
■ Ripple carry delay time 8.5 ns max
■ Input to ripple delay time 14.0 ns max
■ Supply current 60 mA max
Ordering Code:
Logic Symbols
IEEE/IEC
Connection Diagram
Unit Loading/Fan Out
Order Number Package Number Package Description
74F583SC M16B 16-Lead Small Outline Intergrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74F583PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
74F
Pin
Names
Description U.L. Input I
IH
/I
IL
HIGH/LOW Output I
OH
/I
OL
A
0
–A
3
A Operand Inputs 1.0/2.0 20 µA/−1.2 mA
B
0
–B
3
B Operand Inputs 1.0/2.0 20 µA/−1.2 mA
C
n
Carry Input 1.0/1.0 20 µA/−0.6 mA
S
0
–S
3
Sum Outputs 50/33.3 −1 mA/20 mA
C
n+4
Carry Output 50/33.3 −1 mA/20 mA
www.fairchildsemi.com 2
74F583
Functional Description
The ’F583 4-bit binary coded (BCD) full adder performs the
addition of two decimal numbers (A
0
–A
3
, B
0
–B
3
). The loo-
kahead generates the BCD carry terms internally, allowing
the 'F583 to then do BCD addition correctly. For BCD num-
bers 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, A
n
or B
n
, and applying any 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 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.
3 www.fairchildsemi.com
74F583
Absolute Maximum Ratings(Note 1) Recommended Operating
Conditions
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.
DC Electrical Characteristics
AC Electrical Characteristics
Storage Temperature −65°C to +150°C
Ambient Temperature under Bias −55°C to +125°C
Junction Temperature under Bias −55°C to +175°C
Plastic −55°C to +150°C
V
CC
Pin Potential to
Ground Pin −0.5V to +7.0V
Input Voltage (Note 2) −0.5V to +7.0V
Input Current (Note 2) −30 mA to +5.0 mA
Voltage Applied to Output
in HIGH State (with V
CC
= 0V)
Standard Output −0.5V to V
CC
3-STATE Output −0.5V to +5.5V
Current Applied to Output
in LOW State (Max)
twicetheratedI
OL
(mA)
Free Air Ambient Temperature
Commercial 0°C to +70°C
Supply Voltage
Commercial +4.5V to +5.5V
Symbol Parameter
74F
Units
V
CC
Conditions
Min Typ Max
V
IH
Input HIGH Voltage 2.0 V Recognized as a HIGH Signal
V
IL
Input LOW Voltage 0.8 V Recognized as a LOW Signal
V
CD
Input Clamp Diode Voltage −1.2 V Min I
IN
= −18 mA
V
OH
Output HIGH 74F 10% V
CC
2.5 V Min I
OH
= −1 mA
Voltage 74F 5% V
CC
2.7 I
OH
= −1 mA
V
OL
Output LOW 74F 10% V
CC
0.5 V Min I
OL
= 20 mA
Voltage
I
IH
Input HIGH Current 20 µAMaxV
IN
= 2.7V
I
BVI
Input HIGH Current 100 µAMaxV
IN
= 7.0V
Breakdown Test
I
IL
Input LOW Current −0.6 mA Max V
IN
= 0.5V (C
n
)
−1.2 V
IN
= 0.5V (A
n
, B
n
)
I
OS
Output Short-Circuit Current −60 −150 mA Max V
OUT
= 0V
I
CEX
Output HIGH Leakage Current 250 µAMaxV
OUT
= V
CC
I
CCL
Power Supply Current 40 60 mA Max V
O
= LOW
74F 74F
T
A
= +25°CT
A
, V
CC
= Com
Symbol Parameter V
CC
= +5.0V C
L
= 50 pF Units
C
L
= 50 pF
Min Typ Max Min Max
t
PLH
Propagation Delay 2.5 13.0 16.5 2.5 17.5 ns
t
PHL
A
n
or B
n
to S
n
2.5 11.0 14.0 2.5 15.0
t
PLH
Propagation Delay 2.5 6.5 8.5 2.5 9.5 ns
t
PHL
C
n
to C
n+4
2.5 5.0 6.5 2.5 7.5
t
PLH
Propagation Delay 4.0 11.0 14.0 4.0 15.0 ns
t
PHL
A
n
or B
n
to C
n+4
4.0 8.0 10.5 4.0 11.5
P1-P3P4-P5

74F583PC

Mfr. #:
Buy 74F583PC
Manufacturer:
ON Semiconductor / Fairchild
Description:
Logic Adder & Subtractor 4-Bit BCD Adder
Lifecycle:
New from this manufacturer.
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