Sanyo LC7074M Specifications

Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.

CMOS IC

Synchronous Error Correction IC

for RDS Applications

Ordering number:ENN4789

LC7074, 7074M

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Overview

The LC7074 and the LC7074M are ICs for the RDS (radio
data system) implemented by the EBU (European Broad­casting Union) and the RDBS (radio broadcast data sys­tem) implemented by the NRSC (National Radio System
Committee) in the USA.
RDS and RBDS are standards that allow data to be broad­cast multiplexed with other FM broadcasts. When combined
with an IC in the LA2230 series, the LC7074/M synchro­nizes with data multiplexed in an FM broadcast and de­tects and corrects errors in that data. The synchronized data
is output as a serial signal which can then be decoded and
processed on the system control microprocessor.

Functions

• Group synchronization.
RDS group synchronization.
MMBS/RDS group synchronization.

• Error detection and correction.

• Error detection function enable/disable selection.

• Serial data output.

• Serial data clock polarity selection.

• Data block start signal output.

Features

• System that decode, synchronize and detect and correct
errors can easily be constructed by combining the
LC7074/M with an LA2230 series product.

• Reduces overhead in the microprocessor that decodes and
processes the RDS or MMBS/RDS data.

Product-Package Relationship

.oNtcudorPegakcaP

4707CL81PID

M4707CL81PFM

Package Dimensions

unit:mm

3007B-DIP18

[LC7074]

24.0

(1.84)

18

1

2.54

10

9

1.20.5

unit:mm

3095-MFP18

[LC7074M]

18

1

12.6

0.35

1.27

10

9

1.5

0.1

1.22

6.4

7.62

(3.25)

3.85max

3.3

0.51min

SANYO : DIP18

5.4

0.15

1.8max

7.6

6.35

0.625

SANYO : MFP18

0.25

80101TN (KT)/12094JN B8-0839 · 0840 No.4789–1/17

Pin Assignment

LC7074, 7074M

The LC7070 Series

This section describes the differences between the different products in the LC7070 series

Usage Notes

This basic functions, including the pin functions and I/O timing, are identical in all products in the series. However,
some pin circuits and function operation details differ.

• LC7070NM…While the LC7074M is pin compatible with this product, the circuit type of the three output pins differs

as shown in table, Package and Output Driver Type Comparison. These products can be interchanged
to match the output interface. However, since the data output method following synchronization
detection differs as shown in table, Comparison of Functional Differences, care is required in writing
programs that receive, decode and process the output data for the control microprocessor.

• LC7070N……While the LC7074 is pin compatible with this product, the circuit type of the three output pins differs as

shown in table, Package and Output Driver Type Comparison. These products can be interchanged to
match the output interface. However, since the data output method following synchronization detection
differs as shown in table, Comparison of Functional Differences, care is required in writing programs
that receive, decode and process the output data for the control microprocessor.

• LC7071NM…The LC7074M is pin compatible with this product, and the pin circuit types, pin functions, and signal

timings are identical. In principle, these products are interchangeable. However, since the data output
method following synchronization detection differs as shown in table, Comparison of Functional
Differences, care is required in writing programs that receive, decode and process the output data for
the control microprocessor.

• LC7073………The LC7074 is pin compatible with this product, and the pin circuit types, pin functions, and signal

timings are identical. Furthermore, the synchronization detection method and the post-synchronization
data output method are also identical. In principle, these products are interchangeable. However, since
these products handle the block offset words E and F differently, and also handle MMBS/RDS data
differently as shown in table, Comparison of Functional Differences, care is required in writing
programs that receive, decode and process the output data for the control microprocessor.

• LC7073M……The LC7074M is pin compatible with this product, and the pin circuit types, pin functions, and signal

timings are identical. Furthermore, the synchronization detection method and the post-synchronization
data output method are also identical. In principle, these products are interchangeable. However, since
these products handle the block offset words E and F differently, and also handle MMBS/RDS data
differently as shown in table, Comparison of Functional Differences, care is required in writing
programs that receive, decode and process the output data for the control microprocessor.

No.4789–2/17

LC7074, 7074M

Package and Output Driver Type Comparison

.oNtcudorPegakcaP*ecnereffidepytrevirdtuptuOnoitcnuF

N0707CL81PID

MN1707CL81PFM)epytSOMC(rotsisnartSOMpu-lluP

3707CL81PID

M3707CL81PFM

4707CL81PID

M4707CL81PFM

Note: *Only applies to the three pins DATA START, DATA OUT and CLOCK OUT.

Comparison of Functional Differences

metI

EdrowtesffO
FdrowtesffO

atadorezllA

-tsoP

tuptuo

noitcerrocrorrE

)Etesffootgnidnopserroc(

ataddnuopmocSDR/SBMM

.detpurretni

dohtemnoitcetednoitazinorhcnyS

.redro

atadnoitcetednoitazinorhcnys

dohtemnoitanimretedtuo-lluP

epytniardnepO

)epytSOMC(rotsisnartSOMpu-lluP

)epytSOMC(rotsisnartSOMpu-lluP

N0707CL

MN0707CL
MN1707CL

.demrofrepsinoitarepo

sdrowtesffoebotnekateraesehT

noitazinorhcnyspuorgadna

.demrofrepsinoitareponoitceted

tesffonaebotnekatsiatadorezllA

tesffona,ylgnidroccA.kcolbEdrow

noitazinorhcnyskcolbEdrow

SDRnamorfnoitisnartehtroF

puorgSBMMnaot)DCBA(puorg

,noitisnartesreverehtro)EEEE(

tuo-llupehtebotnekateraeseht

.secneuqesnoitazinorhcnyserdna

nacsrorreatad,snoitisnartgniruD

ebnactuptuoataddnarucco

nehwdeveihcasinoitazinorhcnyS

21fotuoevifnisdrowtesffoeht

tcerrocehtnidetcetederaskcolb

morfatadehthtiwstratstuptuoataD

Adrowtesffoeht(kcolbtsrifeht

ehtgniwollofpuorgehtni)kcolb

noitazinorhcnyshcihwrofpuorg

.detelpmocsawnoitceted

.demrofrep

.ecneuqes

3707CL

M3707CL

.detcetedera

.kcolbEdrowtesffo

eseht,tupnisiatadorezllafI

tuo-llupehtretnednaatad

tonodstcudorpesehtecniS

dnatuo-llupehttaeper

.puorgemasehtmorf

.puorgemasehtmorf

snoitcnuflacitnedIMN0707CL81PFM

fonosirapmoC,elbateeS

.secnereffiDlanoitcnuF

fonosirapmoC,elbateeS

.secnereffiDlanoitcnuF

4707CL

M4707CL

.sdrowtesffosaneestoneraesehT

Ddna'C,C,B,AsdrowtesffoylnO

nagniebsaneestonsiatadorezllA

otnekatsiatadorezlla,rehtaR

dna,tupnionsierehttahtnaem

tonsinoitcetednoitazinorhcnys

sahtupniatadtahtedicedstcudorp

gnittuptuopotsyehtdna,deppots

Edrowtesffonanoezinorhcnys

sipuorgSDRnaemithcae,kcolb

yeht,puorgSBMMnanidetresni

.secneuqesnoitazinorhcnyser

.redrotcerrocehtnidetcetederaskcolb

.detcetedtonerewskcolbevitucesnoceromroevifmorfsdrowtesffoehtnehW

.detcetedera

EdnaD,'C,C,B,AsdrowtesffO

.detcetedtonsiFdrowtesffO

tesffonasaneessiatadorezllA

tesffona,ylgnidroccA.kcolbEdrow

noitazinorhcnyskcolbEdrow

.demrofrepsinoitarepo

tuptuoyltcerrocsiatadSDR/SBMM

.srorreondnatuo-lluponhtiw

eerhtfotuoowtnisdrowtesffoehtnehwdeveihcasinoitazinorhcnyS

,kcolbAdrowtesffonahtiwsetelpmocnoitcetednoitazinorhcnysnehW

)kcolbBdrowtesffoeht(kcolbdnocesehtniatadehthtiwstratstuptuo

DroC,BdrowtesffonahtiwsetelpmocnoitcetednoitazinorhcnysnehW

)kcolbAdrowtesffoeht(kcolbtsrifehtniatadehthtiwstratstuptuo,kcolb

.sselrostib5fosecnatsidrofdetcerrocerastibrorreevifotpu,delbanesinoitcerrocrorreerehwsedomnI

No.4789–3/17

Block Diagram

LC7074, 7074M

No.4789–4/17

Pin Functions

niPO/ItiucrictnelaviuqelanretnInoitcnuFtesertaeulaV

VDDV,

V

1SS

V,

2SS

3SS

LC7074, 7074M

ylppusrewoP

1CSO

2CSO

NIKCOLCI

NIATADI

LES.RROCI

LES.DE.LCI

I

O

rotallicsokcolC

tupnikcolcnoitaludomedSDR

.CI

tupniatadnoitaludomedSDR

tupninoitcelesnoitcerrocrorrE

SDRehtnisrorrestcerrocCIehtrehtehwstcelesnipsihT

.ataddetaludomed

*demrofrepnoitcerrocoN:0=tupnI

demrofrepnoitcerrocrorrE:1=tupnI

.sselrostib5fosecnatsidrofdetcerroc

tupninoitcelesytiraloptuptuokcolcatadlaireS

.snipesehttaroticapacdnarotallicsocimareclanretxeehttcennoC

noitaludomedseires0322ALehtmorftuptuokcolcehtottcennoC

.CInoitaludomedseires0322ALehtmorftuptuoatadehtottcennoC

erastibrorreevifotpu,delbanesinoitcerrocrorreerehwsedomnI

tuptuoehtfoegdegnisirehtnodilavsituptuoatadlaireS:0=tupnI

).kcolcehtfoegdegnillafehtnosegnahctuptuoataD(.kcolc

tuptuoehtfoegdegnillafehtnodilavsituptuoatadlaireS:1=tupnI

).kcolcehtfoegdegnisirehtnosegnahctuptuoataD(.kcolc

LORTNOC.S.DI

EVIECERO

NOITCERROCO

RORREO

TRATSATADO

tupnilortnoclangistratsatadkcolB

tuptuossergorpninoitpeceratadSDR

.semitrehto

tuptuoniardnepO

tuptuonoitareponoitcerrocrorrE

.delbasidsinoitcerrocnehw)ecnadepmi

tuptuoniardnepO

tuptuororrE

tuptuoniardnepO

langistratsatadkcolbtuptuoatadlaireS

tuptuo)SOMC(rotsisnartSOMpu-lluP

.skcolbllaroflangisTRATSATADehttuptuO:0=tupnI

.tupniLOTNOC.S.DehtybdellortnocsiepyttuptuoehT

.kcolbdnocesehtylnoroflangisTRATSATADehttuptuO:1=tupnI

gniwolloftuptuogniebsiatadlaireselihwlevelwolastuptuO

llatalevelhgihastuptuO.noitcetednoitazinorhcnysfonoitelpmoc

rorreneebsahatadtuptuoatadlairesehtnehwlevelwolastuptuO

hgih(levelhgihastuptuO.detcerrocebtondluocro,detcerroc

dnaatadtupniehtnisrorreerewerehtnehwlevelwolastuptuO

hgih(levelhgihastuptuO.detcerrocebtondluocsrorreesoht

.detcerrocerewsrorreehtrosrorreonerewerehtnehw)ecnadepmi

levelhgiH

)ecnadepmihgih(

levelhgiH

)ecnadepmihgih(

levelhgiH

)ecnadepmihgih(

levelhgiH

Continued on next page.

No.4789–5/17

Continued from preceding page.

niPO/ItiucrictnelaviuqelanretnInoitcnuFtesertaeulaV

LC7074, 7074M

TUOATADO

TUOKCOLCO

tupniteseR

SERI

.tupniepytttimhcS

tuptuoatadtuptuoatadlaireS

tuptuo)SOMC(rotsisnartSOMpu-lluP

tuptuokcolctuptuoatadlaireS

tuptuo)SOMC(rotsisnartSOMpu-lluP

teserotselcyckcolc4tsaeltafohtgnelahtiwesluplevelwolatupnI

,desusirotallicsozHM4anehwtahtetoN.noitarepoCItratserdna

.sµ1siselcyckcolcruof,sµ52.0sielcyckcolcelgnisaecnis

rotsiserpu-llupni-tliuB

levelhgiH

levelhgiH

Note: *0: Low level input
1: High level input

Specifications

Electrical Characteristics at Ta = 25˚C, V

retemaraPlobmySsnoitidnoCsgnitaRtinU

egatlovylppuSV
egatlovtuptuO

egatlovtupnI

tnerructuptuO

noitapissidrewopelbawollAdPxam

erutarepmetgnitarepOrpoT –58+ot04

erutarepmetegarotSgtsT –521+ot55

Note: *When driving the oscillator with the recommended constants shown in figure 1, values up to the oscillation

amplitude that occurs are allowed.

DD

V

V

V

V

I

I

, V

, V

SS1

SS2

xamV

DD
1O
2O

1I

2I

1O

2O

I

O

niprep

DIP package product: Ta=–40 to +85˚C
MFP package product: Ta=–40 to +85˚C

= 0V

SS3

*:1CSO,SER–Vot3.0

LORTNOC.S.D

nipreptnerruc

–0.7+ot3.0V

TUOKCOLC,TUOATAD,TRATSATAD,2CSO–Vot3.0

RORRE,NOITCERROC,EVIECER–51+ot3.0V

,LES.DE.LC,LES.RROC,NIATAD,NIKCOLC

tnerructuptuoehT:RORRE,NOITCERROC,EVIECER

tuptuoehT:TUOKCOLC,TUOATAD,TRATSATAD

eulavlatoT:sniptuptuollA–09+ot41Am

–51+ot3.0V

3.0+V

DD

3.0+V

DD

02Am

–02+ot2Am

052otpUWm
051otpUWm

˚C
˚C

Allowable Operating Ranges at Ta = –40 to +85˚C, V

retemaraPlobmySsnoitidnoC

egatlovylppusgnitarepOV

egatlovlevel-hgihtupnI

egatlovlevel-woltupnI

eetnaraugrotallicsocimareC 1erugifeeS:2CSO,1CSO

V
V
V
V

V

DD

DD

1HI

SERV8.0

2HI
1LI

SERV

2LI

SS1

LORTNOC.S.D

LORTNOC.S.D

, V

SS2

, V

= 0V, VDD = 4.5 to 6.0V

SS3

nimpytxam

,LES.DE.LC.LES.RROC,NIATAD,NIKCOLC

V7.0

DD

,LES.DE.LC.LES.RROC,NIATAD,NIKCOLC

DD

V

SS
SS

sgnitaR

5.40.6V

V

V3.0

V52.0

.elbatstnatsnoc

tinU

5.31V
V

DD

V

DD

V

DD

deetnaraugrotallicsocimarecehteeS

No.4789–6/17