![](/html/5b/5b50/5b5002298f7276ad6f24ed0c53fd4d6bb0ba39e7ff9a73da1abae73fb0494884/bg1.png)
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
DTMF Receiver
Ordering number:ENN3003B
LC7385, 7385M
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Overview
The LC7385, 7385M CMOS DTMF Receiver ICs inte grate
bandsplit filter and digital decoder functions for the 16
DTMF digits used in touch-tone telephone systems.
Features
• Single +5V power supply.
• Decodes all 16 DTMF digits.
• Built-in differential input amplifier.
• On-chip filters, including
· Dial tone filter.
· High-group filter.
· Low-group filter.
• User-selectable acquisition and release times.
• Pin-selectable 4-bit hexadecimal or binary-coded 2-of-8
output.
• 3-state data outputs facilitate microcontroller or other
peripheral interfaces.
• Standby mode.
• Low-power double-poly CMOS process.
• LC7385 : 18-pin DIP package.
LC7385M : 18-pin MFP package.
Package Dimensions
unit:mm
3007B-DIP18
[LC7385]
24.0
18
1
(1.84)
2.54
unit:mm
3095-MFP18
[LC7385M]
18
10
6.4
7.62
0.25
9
(3.25)
3.85max
3.3
1.20.5
10
0.51min
SANYO : DIP18
1
12.6
0.35
51001TN (KT)/2090YT/D238TA, TS No.3003–1/8
9
1.27
5.4
0.15
1.8max
1.5
0.1
1.22
SANYO : MFP18
6.35
0.625
7.6
![](/html/5b/5b50/5b5002298f7276ad6f24ed0c53fd4d6bb0ba39e7ff9a73da1abae73fb0494884/bg2.png)
Block Diagram
Pin Assignment
LC7385, 7385M
Pin Functions
.oNniPemaNO/InoitpircseD
1NI
2NI
3SGO .tuptuoreifilpmatupnI
4V
5H/BI
6DPI HGIHottesnehwedomybdnatS
7
8
9V
01EOTI
111Q
212Q
313Q
414Q
51DtSO .emitdraugtessdeecxenoitarudriapenotdilavnehwHGIHseoG
61tSEO .detcetedsieriapenotdilavnehwHGIHseoG
71TG/tSO/I.emitdraugtesotdesU
81V
+
–
FER
1CSO
2CSO
SS
DD
15 14
18 17
16
12345
I.tupnignitrevni-nonreifilpmatupnI
ItupnignitrevnireifilpmatupnI
OV(tuptuoegatlovecnerefeR
I
O
Otuptuoatadetats-3
13 12 11
678
DD
HGIHnehw8-fo-2yraniB
WOLnehwlamicedaxeH
.V0yllamroN.ylppusrewoP
HGIHnehwdelbanE
.V5yllamroN.ylppusrewoP
10
9
)2/
:noitcelestamroftuptuo4Qot1Q
.2CSOdna1CSOneewtebdetcennocsilatsyrczHM545975.3.snipkcolC
:noitcelestuptuoetats-34Qot1Q
WOLnehwecnadepmi-hgiH
No.3003–2/8
![](/html/5b/5b50/5b5002298f7276ad6f24ed0c53fd4d6bb0ba39e7ff9a73da1abae73fb0494884/bg3.png)
LC7385, 7385M
Specifications
Absolute Maximum Ratings at Ta=25±2˚C, VSS=0V
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppusmumixaMV
egatlovtupnIV
tnerructupnII
egatlovtuptuOV
noitapissidrewopelbawollAxamdP
erutarepmetgnitarepOrpoT 58+ot04–
erutarepmetegarotSgtsT 521+ot05–
Allowable Operating Conditions at Ta=–40 to +85˚C, VSS=0V
retemaraPlobmySsnoitidnoC
egatlovgnitarepOV
egatlovlevel-hgihtupnIV
egatlovlevel-woltupnIV
Note : When soldering the 18-pin MFP package, solder it manually or use the infrared reflow method.
Do not use the dip-soldering method. The conditions for the infrared reflow method are 235°C max., 10s.
xam 0.7+ot3.0–V
DD
NI
NI
TUO
–40˚C≤Ta≤+85°C
nimpytxam
DD
HI
LI
01,6sniP
5niP
01,6sniP
5niP
57.452.5V
V7.0
DD
V58.0
DD
Vot3.0–
DD
Vot3.0–
DD
sgnitaR
3.0+V
01+ot01–Am
3.0+V
052:81-PIDWm
081:81-PFMWm
˚C
˚C
V
V
V3.0
V
DD
V51.0
V
DD
tinU
DC Electrical Characteristics at T a=25±2˚C, VDD=5V, VSS=0V
retemaraPlobmySsnoitidnoC
tnerrucylppusgnitarepOI
tnerrucylppusybdnatSI
tnerruclevel-hgihtuptuOI
tnerruclevel-woltuptuOI
tnerructuptuoetats-FFO
tnerruclevel-hgihtupnII
tnerruclevel-woltupnII
tnerruc)ecruos(pu-lluPI
tnerruc)knis(nwod-lluPI
egatlovdlohserhtTG/tSV
V
FER
V
FER
egatlovtuptuoV
ecnatsisertuptuoR
)po( 0.30.7Am
DD
)ts(DD
HO
LO
I
HZO
I
LZO
HI
LI
OS
IS
TST
FER
FER
V5=DP 001Aµ
V
TUO
V
TUO
V
TUO
V
TUO
V
NI
V
NI
71niP53.2V
4niP1kΩ
71nip,V6.4=0.3–2.1–Am
71nip,V4.0=2.10.3Am
V,V0=EOT
TUO
V,V0=EOT
TUO
01,2,1snip,V5= 01Aµ
6,5,2,1snip,V0=01–Aµ
01nip,V0=EOT51–5–Aµ
6,5snip,V5=H/B,DP551Aµ
4nip,daoloN4.27.2V
Input Amplifier Characteristics at Ta=25±2˚C, VDD=5V, VSS=0V
retemaraPlobmySsnoitidnoC
egatlovtesffotupnIV
tnerructesffotupnII
noitcejerylppusrewoPRRSPzHk106Bd
noitcejeredomnommoCRRMC 06Bd
niagegatlovpool-nepOA
htdiwdnaBniaGBd0f
egatlovtuptuomumixaMV
daoleviticapacelbareloTC
daolevitsiserelbareloTR
egnaredomnommoCV
OI
VSS≤VNI≤V
OI
O
T
RL≥ k001 Ω 5.4p-pV
O
L
L
MC
DD
daoloN0.3p-pV
sgnitaR
nimpytxam
61,51,41,31,21,11snip,V6.4=8.0–4.0–Am
61,51,41,31,21,11snip,V4.0=0.15.2Am
41,31,21,11snip,V5=01Aµ
41,31,21,11snip,V5=01–Aµ
sgnitaR
nimpytxam
52–52+Vm
001±An
56Bd
5.1zHM
001Fp
05kΩ
tinU
tinU
No.3003–3/8