MC14499DW

MC14499MOTOROLA1

" !% # $" " CMOS

The MC14499 is a 7–segment alphanumeric LED decoder/driver with a serialinterface port to provide communication with CMOS microprocessors andmicrocomputers. This device features NPN output drivers which allowinterfacing 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

4

MULTIPLEXER

2:1MUX

SEGMENTDECODER

DECODERSCANNERBUFFERS

SEGMENTDRIVERS

4 BITS

D20

C

Q5

C

44 4 4

4

4A B

7

DECIMALPOINT

* Transparent Latch

LATCH

44 4 4

Q1D4

C

LATCHC

OSCILLATOR

MUX

hgfed

cba

IIIIII

IV

SEG

MEN

TO

UTP

UTS

CH

ARAC

TER

SELE

CTO

RS

4 BITS

QD

C*

Order this documentby MC14499/D

SEMICONDUCTOR TECHNICAL DATA

P SUFFIXPLASTIC DIP

CASE 707

DW SUFFIXSOG PACKAGE

CASE 751D

ORDERING INFORMATIONMC14499P Plastic DIPMC14499DW SOG Package

PIN ASSIGNMENTS

PLASTIC DIP

DATA

b

c

d

VSS

III

IV

OSC

a g

f

e

VDD

II

I

ENB

CLK

h14

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

Motorola, Inc. 1995

SAME AS IN DL130/D R1

MC14499 MOTOROLA2

MAXIMUM RATINGS* (Voltages referenced to VSS)

ÁÁÁÁÁÁÁÁÁÁÁ




Rating

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

Symbol

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

Value

ÁÁÁ

ÁÁÁ

ÁÁÁ

ÁÁÁ

Unit





DC Supply Voltage

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

VDD

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

– 0.5 to + 7

ÁÁÁ

ÁÁÁ

ÁÁÁ

ÁÁÁ

V





Input Voltage, All Inputs

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

Vin

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

– 0.5 to VDD + 0.5

ÁÁÁ

ÁÁÁ

ÁÁÁ

ÁÁÁ

V





Storage Temperature Range

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

Tstg

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

– 65 to + 150

ÁÁÁ

ÁÁÁ

ÁÁÁ

ÁÁÁ

°C

* Maximum Ratings are those values beyond which damage to the device may occur.Functional operation should be restricted to the limits in the Electrical Characteristics tableor Circuit Operation section.

ELECTRICAL CHARACTERISTICS (VDD = 4.5 to 6.5 V)

Characteristic Symbol

0°C 25°C 70°C

UnitCharacteristic Symbol Min Max Min Max Min Max Unit

Serial Port Input Voltage ‘0’ Level‘1’ Level

VILVIH

—0.7 x VDD

0.3 x VDD—

—0.7 x VDD

0.3 x VDD—

—0.7 x VDD

0.3 x VDD—

V

Serial Port Input Current(Vin = 0 to VDD)

Iin — ± 0.1 — ± 0.1 — ± 1.0 µA

Oscillator Input Voltage ‘0’ Level‘1’ Level

VILVIH

—0.75 x VDD

0.25 x VDD—

—0.75 x VDD

0.25 x VDD—

—0.8 x VDD

0.2 x VDD—

V

Oscillator Input Current VOSC = 0VOSC = VDD

IILIIH

——

100– 100

30– 30

80– 80

10– 10

——

µA

Segment Driver Voltage Below VDDIout = 50 mAIout = 10 mA

∆VOH——

1.10.8

——

1.00.75

——

1.10.8

V

Segment Driver Off Leakage Vout = 0 IOZ — 100 — 50 — 100 µA

Digit DriversSource (On) Vout = 0.8 VSink (Off) Vout = 0.5 V

IOHIOL

6– 0.2

——

5.5– 0.2

——

4– 0.1

——

mA

Supply CurrentVin = 0, Iout = 0,COSC = 0.015 µF

IDD — 1 — 1 — 1 mA

Maximum Power Dissipation PD — 500 — 500 — 500 mW

SWITCHING CHARACTERISTICS (VDD = 5 V ± 10%, TA = 0 to 70°C)

CharacteristicFigure

No. Symbol Min Max Unit

Clock High Time 2 tCH 2 — µs

Clock Low Time 2 tCL 2 — µs

Clock Rise Time 2 tCR — 2 µs

Clock Fall Time 2 tCF — 2 µs

Enable Lead Time 2 tE LEAD 200 — ns

Enable Lag Time 2 tE LAG 200 — ns

Data Set–Up Time 2 tD SUP 200 — ns

Data Hold Time 2 tD HOLD 1 — µs

Scanner Frequency* 4 1/tSCAN 50 300 Hz

OSC/Digit Lead Time 4 tOD — 10 µs

OSC/Segment Lead Time 4 tOS — 10 µs

Digit Overlap 4 tOV — 5 µs

* Scanner Capacitance = 0.022 µF.

This device contains circuitry to protect theinputs against damage due to high staticvoltages or electric fields; however, it is ad-vised that normal precautions be taken to avoidapplication of any voltage higher than maxi-mum rated voltages to this high impedancecircuit. For proper operation, it is recom-mended that Vin and Vout be constrained tothe range VSS ≤ (Vin or Vout) ≤VDD.

MC14499MOTOROLA3

CIRCUIT OPERATION

The circuit accepts a 20–bit input, 16 bits for the four–digitdisplay plus 4 bits for the decimal point — these latter fourbits are optional.

The input sequence is the decimal point code followed bythe four digits, as shown in Figure 1.

In order to enter data the enable input, ENB, must be ac-tive low. The sample and shift are accomplished on the fal-ling clock edge, see Figure 2. Data are loaded from the shiftregister to the latches when ENB goes high. While the shiftregister is being loaded, the previous data are stored in thelatches.

If the decimal point is used, the system requires 20 clockpulses to load data; otherwise only 16 are required.

CASCADING

The circuit may be cascaded in the following manner.If a 1111 word is loaded into the decimal point latch, the

output of the shift register is switched to the decimal pointdriver, see Figure 3. Therefore, to cascade n four–digit dis-play drivers, a set–up is used which loads the 1111 cascad-ing word:

1. ENB = active low.2. Load 20 bits, the first four bits being 1, with 20 clock

pulses.3. ENB = high, to load the latch.4. Repeat steps 1 to 3 (n – 1) times.

5. (n x 20) bits can be loaded into n circuits, with 1111 asdecimal point word to continue the cascading.

SCANNER

The scanner frequency is determined by an on–chip oscil-lator, which requires an external frequency–determining ca-pacitor. The capacitor voltage varies between two triggerlevels at the oscillator frequency.

An external oscillator signal can be used, within the recom-mended operating range of 200 to 800 Hz. For test purposesthis frequency may be increased up to 10 kHz.

A divide by four counter provides four non–overlappingscanner waveforms corresponding to the four digits — seeFigure 4.

SEGMENT DECODER

The code used in these matrix decoders is shown in Fig-ure 5.

OUTPUT DRIVERS

There are two different drivers:

• The segment and decimal point drivers; these are NPNemitter followers with no current limiting devices.

• The digit output buffers; these are short–circuit protectedCMOS devices.

A typical application circuit is shown in Figure 6.

Figure 1. Input Sequence

18 17 16 15 14 13 12 11 10 9 8 7 6 5 41920 3 2 1

TIME

SHIFT

BIT NO.

DIGIT IV DIGIT III DIGIT II DIGIT I DECIMAL POINT

MSB

LSB

MSB

LSB

MSB

DIG

IT IV

DIG

IT II

I

DIG

IT II

DIG

IT I

MSB

LSB

LSB

MC14499 MOTOROLA4

Figure 2a. Serial Input, Positive Clock

DATA D1 D2 DN

C2C1 CN

ENB

CLK

tE LEAD

tCL tCH

tDH

tE LAG

tDSUP

Figure 2b. Serial Input, Negative Clock

DATA D1 D2 DN

C2C1 CN

ENB

CLK

tE LEAD

tCL tCH

tDHtSUP

tE LAG

Figure 2. Serial Input

Figure 3. Cascading MC14499s

DATA

ENB

CLK

DIGIT SEGM

MC14499(1)

h

10 k

4 7

DATA

ENB

CLK

DIGIT SEGM

MC14499(2)

h

4 7

MC14499MOTOROLA5

Figure 4. Scanner Waveforms

DIGIT IV

DIGIT III

DIGIT II

SEGMENTOUTPUTS

DIGIT I

tOD

OSC

tSCAN

1/tOSC

tOV

tOS

Figure 5. Segment Code

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

DASH

BLANK

MC14499 MOTOROLA6

Figure 6. Application Example

CLK

ENB

DATA

OSC

SEGMENTOUTPUTS

(7)

Chgfed

cba

IIIIIIIV

GND

DIGITOUTPUTS

(4)

Q1

Q2

Q3

Q4

ID

IS

R1 – R8

#1 #2

R1 – R8: 36 – 82 ΩC: 0.015 µFVDD Typ: 5 – 6 VIS max: 40 – 50 mAID max: 8 IS max

#3 #4

VDD

MC14499

. . .

MC14499MOTOROLA7

PACKAGE DIMENSIONS

P SUFFIXPLASTIC DIPCASE 707–02

MIN MINMAX MAXMILLIMETERS INCHES

DIM22.226.103.560.361.27

1.020.202.92

23.246.604.570.561.78

1.520.303.43

0°0.51

0.8750.2400.1400.0140.050

0.0400.0080.115

0.9150.2600.1800.0220.070

0.0600.0120.135

15°1.02

2.54 BSC

7.62 BSC

0.100 BSC

0.300 BSC0°

0.02015°

0.040

ABCDFGHJKLMN

NOTES:1. POSITIONAL TOLERANCE OF LEADS (D),

SHALL BE WITHIN 0.25 (0.010) AT MAXIMUMMATERIAL CONDITION, IN RELATION TOSEATING PLANE AND EACH OTHER.

2. DIMENSION L TO CENTER OF LEADS WHENFORMED PARALLEL.

3. DIMENSION B DOES NOT INCLUDE MOLDFLASH.1 9

1018

B

A

HF

GD

SEATINGPLANE

N K

MJ

LC

DW SUFFIXSOG PACKAGECASE 751D–04

NOTES:1. DIMENSIONING AND TOLERANCING PER

ANSI Y14.5M, 1982.2. CONTROLLING DIMENSION: MILLIMETER.3. DIMENSIONS A AND B DO NOT INCLUDE

MOLD PROTRUSION.4. MAXIMUM MOLD PROTRUSION 0.150

(0.006) PER SIDE.5. DIMENSION D DOES NOT INCLUDE

DAMBAR PROTRUSION. ALLOWABLEDAMBAR PROTRUSION SHALL BE 0.13(0.005) TOTAL IN EXCESS OF D DIMENSIONAT MAXIMUM MATERIAL CONDITION.

–A–

–B–

20

1

11

10

SAM0.010 (0.25) B ST

D20X

MBM0.010 (0.25)P10X

J

F

G18X K

C

–T– SEATINGPLANE

M

R X 45

DIM MIN MAX MIN MAXINCHESMILLIMETERS

A 12.65 12.95 0.499 0.510B 7.40 7.60 0.292 0.299C 2.35 2.65 0.093 0.104D 0.35 0.49 0.014 0.019F 0.50 0.90 0.020 0.035G 1.27 BSC 0.050 BSCJ 0.25 0.32 0.010 0.012K 0.10 0.25 0.004 0.009M 0 7 0 7 P 10.05 10.55 0.395 0.415R 0.25 0.75 0.010 0.029

MC14499 MOTOROLA8

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regardingthe suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit,and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in differentapplications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola doesnot convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components insystems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure ofthe Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any suchunintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmlessagainst all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or deathassociated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.

How to reach us:USA/EUROPE: Motorola Literature Distribution; JAPAN : Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, Toshikatsu Otsuki,P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–3521–8315

MFAX: [email protected] – TOUCHTONE (602) 244–6609 HONG KONG: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, INTERNET: http://Design–NET.com 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298

MC14499/D

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MC14499DW