Datasheet SN54F283J Datasheet (Texas Instruments)

SN54F283, SN74F283

4-BIT BINARY FULL ADDERS

WITH FAST CARRY

SDFS069A – D2932, MARCH 1987 – REVISED OCTOBER 1993

• Full-Carry Look-Ahead Across the

Four Bits

• Systems Achieve Partial Look-Ahead

Performance With the Economy of Ripple
Carry

• Package Options Include Plastic

Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs

description

The ′F283 is a full adder that performs the addition
of two 4-bit binary words. The sum (Σ) outputs are
provided for each bit and the resultant carry (C4)
output is obtained from the fourth bit.

The device features full internal look-ahead
across all four bits generating the carry term C4 in
typically 5.7 ns. This capability provides the
system designer with partial look-ahead
performance at the economy and reduced
package count of a ripple-carry implementation.

The adder logic, including the carry, is
implemented in its true form. End-around carry
can be accomplished without the need for logic or
level inversion.

The ′F283 can be used with either all-active-high
(positive logic) or all-active-low (negative logic)
operands.

SN54F283 ...J PACKAGE

SN74F283 ...D OR N PACKAGE

SN54F283 . . . FK PACKAGE

A2

Σ1

NC

A1
B1

NC – No internal connection

(TOP VIEW)

Σ2
B2
A2

Σ1
A1
B1
C0

GND

(TOP VIEW)

B2ΣNC

3212019

4
5
6
7
8

910111213

C0

1
2
3
4
5
6
7
8

2

GND

16
15
14
13
12
11
10

NC

V

CC

B3
A3
Σ3
A4
B4
Σ4
C4

9

CC

V

B3

A3

18

Σ3

17

NC

16

A4

15

B4

14

4

C4

Σ

The SN54F283 is characterized for operation over
the full military temperature range of –55°C to
125°C. The SN74F283 is characterized for
operation from 0°C to 70°C.

logic symbol

†

This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

Pin numbers shown are for the D, J, and N packages.

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

†

Σ

0

P

Σ

3

Q

CO

A1
A2
A3
A4
B1
B2
B3
B4
C0

5
3
14
12
6
2
15
11
7

0

3
0

3
CI

4

Σ1

1

Σ2

13

Σ3

10

Σ4

9

C4

Copyright  1993, Texas Instruments Incorporated

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

2–1

SN54F283, SN74F283
4-BIT BINARY FULL ADDERS
WITH FAST CARRY

SDFS069A – D2932, MARCH 1987 – REVISED OCT OBER 1993

logic diagram (positive logic)

11

B4

12

A4

10

9

C4

Σ4

15

B3

14

A3

2

B2

3

A2

6

B1

5

A1

7

C0

Pin numbers shown are for the D, J, and N packages.

13

Σ3

1

Σ2

4

Σ1

2–2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN54F283, SN74F283

4-BIT BINARY FULL ADDERS

SDFS069A – D2932, MARCH 1987 – REVISED OCTOBER 1993

FUNCTION TABLE

OUTPUTS

INPUTS

A1 B1 A2 B2 Σ1 Σ2 C2 Σ1 Σ2 C2
A3 B3 A4 B4 Σ3 Σ4 C4 Σ3 Σ4 C4

L L L L L L L H L L

H L L L H L L L H L

L H L L H L L L H L

H H L L L H L H H L

L L H L L H L H H L

H L H L H H L L L H

L H H L H H L L L H

H H H L L L H H L H

L L L H L H L H H L

H L L H H H L L L H

L H L H H H L L L H

H H L H L L H H L H

L L H H L L H H L H

H L H H H L H L H H

L H H H H L H L H H

H H H H L H H H H H

NOTE: Input conditions at A1, B1, A2, B2, and C0 are used to determine outputs Σ1

and Σ2 and the value of the internal carry C2. The values at C2, A3, B3, A4,
and B4 are then used to determine outputs Σ3, Σ4, and C4.

WHEN C0 = L WHEN C0 = H
WHEN C2 = L WHEN C2 = H

WITH FAST CARRY

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage range, V

Input voltage range (see Note 1) –1.2 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input current range –30 mA to 5 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Voltage range applied to any output in the high state –0.5 V to V

Current into any output in the low state 40 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range: SN54F283 –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.

–0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SN74F283 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

CC

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

2–3

SN54F283, SN74F283

UNIT

PARAMETER

TEST CONDITIONS

UNIT

V

V

I

V

V

V

mA

(

)

(

)

(INPUT)

(OUTPUT)

C0

Σ

ns

A or B

Σ

ns

C0

C4

ns

A or B

C4

ns

4-BIT BINARY FULL ADDERS
WITH FAST CARRY

SDFS069A – D2932, MARCH 1987 – REVISED OCT OBER 1993

recommended operating conditions

SN54F283 SN74F283

MIN NOM MAX MIN NOM MAX

V

CC

V

IH

V

IL

I

IK

I

OH

I

OL

T

A

electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)

V

IK

OH

V

OL

I

I

I

IH

IL

I

OS

I

CC

†

All typical values are at VCC = 5 V, TA = 25°C.

‡

Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.

Supply voltage 4.5 5 5.5 4.5 5 5.5 V
High-level input voltage 2 2 V
Low-level input voltage 0.8 0.8 V
Input clamp current –18 –18 mA
High-level output current –1 –1 mA
Low-level output current 20 20 mA
Operating free-air temperature –55 125 0 70 °C

SN54F283 SN74F283

MIN TYP†MAX MIN TYP†MAX

VCC = 4.5 V, II = –18 mA –1.2 –1.2 V
VCC = 4.5 V IOH = – 1 mA 2.5 3.4 2.5 3.4
VCC = 4.75 V, IOH = – 1 mA 2.7
VCC = 4.5 V IOL = 20 mA 0.3 0.5 0.3 0.5 V
VCC = 5.5 V, VI = 7 V 0.1 0.1 mA
VCC = 5.5 V, VI = 2.7 V 20 20 µA

‡

Any A or B
C0

= 5.5 V,

CC

VCC = 5.5 V, VO = 0 –60 –150 –60 –150 mA
VCC = 5.5 V, VI = 4.5 V 36 55 36 55 mA

= 0.5

I

– 1.2 – 1.2
– 0.6 – 0.6

switching characteristics (see Note 2)

VCC = 5 V,
CL = 50 pF,

PARAMETER

t

PLH

t

PHL

t

PLH

t

PHL

t

PLH

t

PHL

t

PLH

t

§
NOTE 2: Load circuits and waveforms are shown in Section 1.

PHL

For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.

FROM

INPUT

TO

OUTPUT

RL = 500 Ω,
TA = 25°C

′F283 SN54F283 SN74F283

MIN TYP MAX MIN MAX MIN MAX

2.7 6.6 9.5 2.7 14 2.7 10.5

3.2 6.6 9.5 3.2 14 3.2 10.5

3.2 6.6 9.5 3.2 14 3.2 10.5

2.7 6.6 9.5 2.7 14 2.7 10.5

2.7 5.3 7.5 2.7 10.5 2.7 8.5

2.2 5 7 2.2 10 2.2 8

2.7 5.3 7.5 2.7 10.5 2.7 8.5

2.2 4.9 7 2.2 10 2.2 8

VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500Ω,
TA = MIN to MAX

§

UNIT

2–4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

IMPORTANT NOTICE

T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.

TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.

CERT AIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICA TIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERST OOD TO
BE FULLY AT THE CUSTOMER’S RISK.

In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.

TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.

Copyright  1998, Texas Instruments Incorporated