MC14499

MOTOROLA

1

7-Segment LED Display

Decoder/Driver

with Serial Interface

CMOS

The MC14499 is a 7–segment alphanumeric LED decoder/driver with a serial

interface port to provide communication with CMOS microprocessors and

microcomputers. This device features NPN output drivers which allow

interfacing to common cathode LED displays through external series resistors.

• High–Current Segment Drivers On–Chip

• CMOS MPU compatible Input Levels

• Wide Operating Voltage Range: 4.5 to 6.5 V

• Operating Temperature Range: 0 to 70°C

• Drives Four Characters with Decimal Points

• Also See MC14489

16–BIT SHIFT REGISTER

BLOCK DIAGRAM

CLK

ENB

DATA

OSC

B 4

MULTIPLEXER

2:1

MUX

SEGMENT

DECODER

DECODER

SCANNER

BUFFERS

SEGMENT

DRIVERS

4 BITS

D20

C

Q5

C

4

4

4

4

4

4

A

B

7

DECIMAL

POINT

* Transparent Latch

LATCH

4

4

4

4

Q1

D4

C

LATCH

C

OSCILLATOR

MUX

h

g

f

e

d

c

b

a

I

II

III

IV

4 BITS

Q

D

C*

Order this document

by MC14499/D

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

MC14499

P SUFFIX

PLASTIC DIP

CASE 707

DW SUFFIX

SOG PACKAGE

CASE 751D

ORDERING INFORMATION

MC14499P

Plastic DIP

MC14499DW

SOG Package

PIN ASSIGNMENTS

PLASTIC DIP

DATA

b

c

d

VSS

III

IV

OSC

a

g

f

e

VDD

II

I

ENB

CLK

h

14

15

16

17

18

10

11

12

13

5

4

3

2

1

9

8

7

6

NC

5

4

3

2

1

10

9

8

7

6

14

15

16

17

18

19

20

11

12

13

SOG PACKAGE

NC

c

d

DATA

b

VSS

III

IV

OSC

a

g

f

e

VDD

II

I

ENB

CLK

h

18

1

NC = NO CONNECTION

20

1

SAME AS IN DL130/D R1