MOTOROLA SN74LS247D, SN74LS247DR2, SN74LS247N Datasheet

 Semiconductor Components Industries, LLC, 1999

December, 1999 – Rev. 6

1 Publication Order Number:

SN74LS247/D

SN74LS247

BCD-to-Seven-Segment
Decoders/Drivers

The SN74LS247 is a BCD-to-Seven-Segment Decoder/Drivers.
The LS247 composes the

and with the tails. The LS247 has

active-low outputs for direct drive of indicators.

The LS247 features a lamp test input and have full ripple-blanking
input/output controls. An automatic leading and/or trailing-edge
zero-blanking control (RBI and RBO) is incorporated and an
overriding blanking input (BI) is contained which may be used to
control the lamp intensity by pulsing or to inhibit the output’s lamp test
may be performed at any time when the BI/RBO node is at high level.
Segment identification and resultant displays are shown below.
Display pattern for BCD input counts above 9 are unique symbols to
authenticate input conditions.

• Open-Collector Outputs Drive Indicators Directly

• Lamp-Test Provision

• Leading/Trailing Zero Suppression

GUARANTEED OPERATING RANGES

Symbol Parameter Min Typ Max Unit

V

CC

Supply Voltage 4.75 5.0 5.25 V

T

A

Operating Ambient

T emperature Range

0 25 70 °C

I

OH

Output Current – High

BI/RBO

–50

m

A

I

OL

Output Current – Low

BI/RBO

3.2 mA

V

O(off)

Off–State Output Voltage

a – g

15 V

I

O(on)

On–State Output Current

a – g

24 mA

LOW

POWER

SCHOTTKY

Device Package Shipping

ORDERING INFORMATION

SN74LS247N 16 Pin DIP 2000 Units/Box
SN74LS247D 16 Pin

SOIC

D SUFFIX

CASE 751B

http://onsemi.com

2500/Tape & Reel

PLASTIC
N SUFFIX
CASE 648

16

1

16

1

SN74LS247

http://onsemi.com

2

SEGMENT

IDENTIFICATION

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

a

b

c

d

e

fg

NUMERICAL DESIGNATIONS AND RESULTANT DISPLAYS

SN74LS247

(TOP VIEW)

14 13 12 11 10 9

123456

7

16 15

8

V

CC

B

fgab dce

C LAMP

TESTRBOUT

PUT

RB

IN

PUT

D A GND

INPUTS INPUTS

OUTPUTS

fgabcde

B C LTRBORBI D A

BI/

CIRCUIT FEATURES LAMP INTENSITY MODULATION CAPABILITY

DRIVER OUTPUTS

TYPICAL

TYPE ACTIVE

LEVEL

OUTPUT

CONFIGURATION

SINK

CURRENT

MAX

VOLTAGE

POWER

DISSIPATION

SN74LS247 low open-collector 24 mA 15 V 35 mW

SN74LS247

http://onsemi.com

3

INPUT

A

(7)

INPUT

B

INPUT

C

(1)

(2)

(6)

INPUT

D

(4)

BI/RBO

BLANKING

INPUT OR

RIPPLE-BLANKING

OUTPUT

LAMP TEST

INPUT

(3)

RBI

RIPPLE-BLANKING

INPUT

(5)

OUTPUT

(13)

a

(12)

OUTPUT

b

(11)

OUTPUT

c

(10)

OUTPUT

d

(9)

OUTPUT

e

(15)

OUTPUT

f

(14)

OUTPUT

g

LOGIC DIAGRAM

LS247