74F283D-T NXP Semiconductors, 74F283D-T Datasheet - Page 2

• Manufacturer Part Number: 74F283D-T
• Manufacturer: NXP Semiconductors

Specifications of 74F283D-T

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Philips Semiconductors
FEATURES
DESCRIPTION
The 74F283 adds two 4-bit binary words (An plus Bn) plus the
incoming carry. The binary sum appears on the sum outputs
( 0– 3) and the outgoing carry (C
C
= 0+2 1+4 2+8 3+16C
where (+)=plus
Due to the symmetry of the binary add function, the 74F283 can be
used with either all active-High operands (positive logic) or with all
active-Low operands (negative logic). See Function Table. In case of
all active-Low operands (negative logic) the results 1– 4 and C
should be interpreted also as active-Low. With active-High inputs,
C
intended. Interchanging inputs of equal weight does not affect the
operation, thus A0, B0, C
7, etc.
Due to pin limitations, the intermediate carries of the 74F283 are not
brought out for use as inputs or outputs. However, other means can
be used to effectively insert a carry into, or bring a carry out from, an
intermediate stage.
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
NOTE:
One (1.0) FAST Unit Load is defined as: 20 A in the High state and 0.6mA in the Low state.
LOGIC SYMBOL
1989 Mar 03
IN
IN
High speed 4-bit addition
Cascadable in 4-bit increments
Fast Internal carry look-ahead
V
GND=Pin 8
4-bit binary full adder with fast carry
CC
+2
cannot be left open; it must be held Low when no “carry in” is
=Pin 16
0
(A0+B0)+2
7
A0 - A3
B0 - B3
C
PINS
0– 3
C
OUT
IN
1
C
(A1+B1)+2
IN
A0 B0 A1 B1 A2 B2 A3 B3
5
6
4
OUT
0
IN
can arbitrarily be assigned to pins 5, 6,
3
1
1
2
2
(A2+B2)+2
OUT
14 15 12 11
13
2
) according to the equation:
10
3
3
C
(A3+B3)
OUT
SF00853
A operand inputs
B operand inputs
DESCRIPTION
Carry output
Sum outputs
Carry input
9
OUT
2
PIN CONFIGURATION
ORDERING INFORMATION
LOGIC SYMBOL (IEEE/IEC)
16-pin plastic DIP
16-pin plastic SO
DESCRIPTION
74F283
TYPE
HIGH/LOW
74F(U.L.)
1.0/2.0
1.0/2.0
1.0/1.0
50/33
50/33
PROPAGATION
GND
C
TYPICAL
B1
A0
B0
A1
12
DELAY
COMMERCIAL RANGE
14
15
11
IN
6
2
0
5
3
7
1
6.5ns
T
amb
8
V
1
2
3
4
5
6
7
CC
N74F283N
N74F283D
= 0 C to +70 C
CI
0
3
0
3
= 5V 10%,
Q
P
CO
16
15
14
13
12
10
11
9
SF00852
SUPPLY CURRENT
0
3
LOAD VALUE
SF00854
1.0mA/20mA
1.0mA/20mA
20 A/1.2mA
20 A/1.2mA
20 A/0.6mA
HIGH/LOW
Product specification
V
B2
A2
A3
B3
C
2
3
CC
OUT
TYPICAL
(TOTAL)
40mA
13
10
853-0364 95944
4
1
9
PKG DWG #
74F283
SOT109-1
SOT38-4