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Электронный компонент: M74HC283TTR

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1/9
August 2001
s
HIGH SPEED :
t
PD
= 17ns (TYP.) at V
CC
= 6V
s
LOW POWER DISSIPATION:
I
CC
=4
A(MAX.) at T
A
=25C
s
HIGH NOISE IMMUNITY:
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
s
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 4mA (MIN)
s
BALANCED PROPAGATION DELAYS:
t
PLH
t
PHL
s
WIDE OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 6V
s
FULL-CARRY LOOK-AHEAD ACROSS THE
FOUR BITS
s
PARTIAL LOOK-AHEAD WITH THE
ECONOMY OF RIPPLE CARRY
s
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 283
DESCRIPTION
The M74HC283 is an high speed CMOS 4 BIT
BINARY FULL ADDER fabricated with silicon gate
C
2
MOS technology.
Sum (
)
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. A 4 x n binary adder is easily built up
by cascading without any additional logic.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
M74HC283
4-BIT BINARY FULL ADDER
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE
TUBE
T & R
DIP
M74HC283B1R
SOP
M74HC283M1R
M74HC283RM13TR
TSSOP
M74HC283TTR
TSSOP
DIP
SOP
M74HC283
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INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
BLOCK DIAGRAM
PIN No
SYMBOL
NAME AND FUNCTION
4, 1, 13, 10
1 to
4
Sum Outputs
5, 3, 14, 12
A1 to A4
A Operand Inputs
6, 2, 15, 11
B1 to B4
B Operand Inputs
7
C0
Carry Input
9
C4
Carry Output
8
GND
Ground (0V)
16
Vcc
Positive Supply Voltage
INPUTS
OUTPUTS
Bn
An
Cn - 1
n
Cn
L
L
L
L
L
L
L
H
H
L
L
H
L
H
L
L
H
H
L
H
H
L
L
H
L
H
L
H
L
H
H
H
L
L
H
H
H
H
H
H
M74HC283
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LOGIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65
C; derate to 300mW by 10mW/
C from 65
C to 85
C
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
-0.5 to +7
V
V
I
DC Input Voltage
-0.5 to V
CC
+ 0.5
V
V
O
DC Output Voltage
-0.5 to V
CC
+ 0.5
V
I
IK
DC Input Diode Current
20
mA
I
OK
DC Output Diode Current
20
mA
I
O
DC Output Current
25
mA
I
CC
or I
GND
DC V
CC
or Ground Current
50
mA
P
D
Power Dissipation
500(*)
mW
T
stg
Storage Temperature
-65 to +150
C
T
L
Lead Temperature (10 sec)
300
C
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
2 to 6
V
V
I
Input Voltage
0 to V
CC
V
V
O
Output Voltage
0 to V
CC
V
T
op
Operating Temperature
-55 to 125
C
t
r
, t
f
Input Rise and Fall Time
V
CC
= 2.0V
0 to 1000
ns
V
CC
= 4.5V
0 to 500
ns
V
CC
= 6.0V
0 to 400
ns
M74HC283
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DC SPECIFICATIONS
AC ELECTRICAL CHARACTERISTICS (C
L
= 50 pF, Input t
r
= t
f
= 6ns)
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25C
-40 to 85C
-55 to 125C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
V
IH
High Level Input
Voltage
2.0
1.5
1.5
1.5
V
4.5
3.15
3.15
3.15
6.0
4.2
4.2
4.2
V
IL
Low Level Input
Voltage
2.0
0.5
0.5
0.5
V
4.5
1.35
1.35
1.35
6.0
1.8
1.8
1.8
V
OH
High Level Output
Voltage
2.0
I
O
=-20
A
1.9
2.0
1.9
1.9
V
4.5
I
O
=-20
A
4.4
4.5
4.4
4.4
6.0
I
O
=-20
A
5.9
6.0
5.9
5.9
4.5
I
O
=-4.0 mA
4.18
4.31
4.13
4.10
6.0
I
O
=-5.2 mA
5.68
5.8
5.63
5.60
V
OL
Low Level Output
Voltage
2.0
I
O
=20
A
0.0
0.1
0.1
0.1
V
4.5
I
O
=20
A
0.0
0.1
0.1
0.1
6.0
I
O
=20
A
0.0
0.1
0.1
0.1
4.5
I
O
=4.0 mA
0.17
0.26
0.33
0.40
6.0
I
O
=5.2 mA
0.18
0.26
0.33
0.40
I
I
Input Leakage
Current
6.0
V
I
= V
CC
or GND
0.1
1
1
A
I
CC
Quiescent Supply
Current
6.0
V
I
= V
CC
or GND
4
40
80
A
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25C
-40 to 85C
-55 to 125C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
t
TLH
t
THL
Output Transition
Time
2.0
30
75
95
110
ns
4.5
8
15
19
22
6.0
7
13
16
19
t
PLH
t
PHL
Propagation Delay
Time
(An, Bn -
n)
2.0
95
210
265
315
ns
4.5
27
42
53
63
6.0
22
36
45
54
t
PLH
t
PHL
Propagation Delay
Time
(An, Bn - C4)
2.0
80
195
245
295
ns
4.5
25
39
49
59
6.0
20
33
42
50
t
PLH
t
PHL
Propagation Delay
Time
(C0 -
n)
2.0
60
150
190
225
ns
4.5
20
30
38
45
6.0
17
26
32
38
t
PLH
t
PHL
Propagation Delay
Time
(C0 - C4)
2.0
60
150
190
225
ns
4.5
20
30
38
45
6.0
17
26
32
38
M74HC283
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CAPACITIVE CHARACTERISTICS
1) C
PD
is defined as the value of the IC's internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
= C
PD
x V
CC
x f
IN
+ I
CC
TEST CIRCUIT
C
L
= 50pF or equivalent (includes jig and probe capacitance)
R
T
= Z
OUT
of pulse generator (typically 50
)
WAVEFORM : PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle)
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25C
-40 to 85C
-55 to 125C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
C
IN
Input Capacitance
5.0
5
10
10
10
pF
C
PD
Power Dissipation
Capacitance (note
1)
5.0
126
pF