TC74HC283AP/AF
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74HC283AP,TC74HC283AF
4-Bit Binary Full Adder
The TC74HC283A is a high speed CMOS 4-BIT BINARY FULL
ADDER fabricated with silicon gate C
2
MOS technology.
It achieves the high speed operation similar to equivalent
LSTTL while maintaining the CMOS low power dissipation.
Sum (Σ) outputs are provided for each bit and a resultant carry
(C4) is obtained from the fourth bit.
This adder features full internal look-ahead across all four bits.
A4 × n bit binary adder is easily built up by cascading the
HC283A without any additional logic.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
TC74HC283AP
TC74HC283AF
Features
•
•
•
•
•
•
•
•
High speed: t
pd
= 17 ns (typ.) at V
CC
= 5 V
Low power dissipation: I
CC
= 4
μA
(max) at Ta = 25°C
High noise immunity: V
NIH
= V
NIL
= 28% V
CC
(min)
Output drive capability: 10 LSTTL loads
Symmetrical output impedance: |I
OH
| = I
OL
= 4 mA (min)
∼
Balanced propagation delays: t
pLH
−
t
pHL
Wide operating voltage range: V
CC
(opr) = 2 to 6 V
Pin and function compatible with 74LS283
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
: 1.00 g (typ.)
: 0.18 g (typ.)
Pin Assignment
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2012-02-29
TC74HC283AP/AF
IEC Logic Symbol
Block Diagram
Truth Table
(1 bit)
Inputs
Bn
L
L
L
L
H
H
H
H
An
L
L
H
H
L
L
H
H
Cn
−
1
L
H
L
H
L
H
L
H
Outputs
Σn
L
H
H
L
H
L
L
H
Cn
L
L
L
H
L
H
H
H
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2012-02-29
TC74HC283AP/AF
System Diagram
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2012-02-29
TC74HC283AP/AF
Absolute Maximum Ratings (Note 1)
Characteristics
Supply voltage range
DC input voltage
DC output voltage
Input diode current
Output diode current
DC output current
DC V
CC
/ground current
Power dissipation
Storage temperature
Symbol
V
CC
V
IN
V
OUT
I
IK
I
OK
I
OUT
I
CC
P
D
T
stg
Rating
−0.5
to 7
−0.5
to V
CC
+
0.5
−0.5
to V
CC
+
0.5
±20
±20
±25
±50
500 (DIP) (Note 2)/180 (SOP)
−65
to 150
Unit
V
V
V
mA
mA
mA
mA
mW
°C
Note 1: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or
even destruction.
Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly
even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute
maximum ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc).
Note 2: 500 mW in the range of Ta
= −40
to 65°C. From Ta
=
65 to 85°C a derating factor of
−10
mW/°C shall be
applied until 300 mW.
Operating Ranges (Note)
Characteristics
Supply voltage
Input voltage
Output voltage
Operating temperature
Symbol
V
CC
V
IN
V
OUT
T
opr
Rating
2 to 6
0 to V
CC
0 to V
CC
−40
to 85
0 to 1000 (V
CC
=
2.0 V)
Input rise and fall time
t
r
, t
f
0 to 500 (V
CC
=
4.5 V)
0 to 400 (V
CC
=
6.0 V)
ns
Unit
V
V
V
°C
Note:
The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
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2012-02-29
TC74HC283AP/AF
Electrical Characteristics
DC Characteristics
Characteristics
Symbol
Test Condition
V
CC
(V)
2.0
High-level input
voltage
V
IH
⎯
4.5
6.0
2.0
Low-level input
voltage
V
IL
⎯
4.5
6.0
2.0
I
OH
= −20 μA
High-level output
voltage
V
OH
V
IN
=
V
IH
or V
IL
I
OH
= −4
mA
I
OH
= −5.2
mA
I
OL
=
20
μA
Low-level output
voltage
V
OL
V
IN
=
V
IH
or V
IL
I
OL
=
4 mA
I
OL
=
5.2 mA
Input leakage
current
Quiescent supply
current
I
IN
I
CC
V
IN
=
V
CC
or GND
V
IN
=
V
CC
or GND
4.5
6.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
6.0
6.0
Min
1.50
3.15
4.20
⎯
⎯
⎯
1.9
4.4
5.9
4.18
5.68
⎯
⎯
⎯
⎯
⎯
⎯
⎯
Ta
=
25°C
Typ.
⎯
⎯
⎯
⎯
⎯
⎯
2.0
4.5
6.0
4.31
5.80
0.0
0.0
0.0
0.17
0.18
⎯
⎯
Max
⎯
⎯
⎯
0.50
1.35
1.80
⎯
⎯
⎯
⎯
⎯
0.1
0.1
0.1
0.26
0.26
±0.1
4.0
Ta
=
−40
to 85°C
Min
1.50
3.15
4.20
⎯
⎯
⎯
1.9
4.4
5.9
4.13
5.63
⎯
⎯
⎯
⎯
⎯
⎯
⎯
Max
⎯
⎯
⎯
0.50
1.35
1.80
⎯
⎯
⎯
⎯
⎯
0.1
0.1
0.1
0.33
0.33
±1.0
40.0
μA
μA
V
V
V
V
Unit
AC Characteristics
(C
L
=
15 pF, V
CC
=
5 V, Ta
=
25°C, input: t
r
=
t
f
=
6 ns)
Characteristics
Output transition time
Propagation delay time
(C0-Σn)
Propagation delay time
(C0-C4)
Propagation delay time
(An, Bn-Σn)
Propagation delay time
(An, Bn-C4)
Symbol
t
TLH
t
THL
t
pLH
t
pHL
t
pLH
t
pHL
t
pLH
t
pHL
t
pLH
t
pHL
Test Condition
⎯
Min
⎯
Typ.
4
Max
8
Unit
ns
⎯
⎯
17
26
ns
⎯
⎯
17
26
ns
⎯
⎯
23
37
ns
⎯
⎯
21
34
ns
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2012-02-29
FPGA/CPLD
