DTMF Receiver LSI

Overview

The LC73861 and LC73862 are DTMF signal detector receiver

that incorporates all the necessary filters for telephone

answering machines.

Features

.

16-DTMF tone signal decoder

.

DTMF receiver with all necessary filters built-in

.

Dial tone filter

.

High-group bandpass filter

.

Low-group bandpass filter

.

Extended dynamic range

.

Serial data output

.

Microcontroller guard-time compatible

.

4.5 to 5.5 V operating supply voltage range

Package Dimensions

unit : mm

3001B-DIP8

[LC73861, LC73862]

SANYO : DIP8

Specifications

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage

–0.3 to +6.0

V

Maximum input voltage

V

Maximum input current

–10 to +10

mA

Maximum output voltage

V

Allowable power dissipation

Pd max

Ta

% 85°C

500

mW

Operating temperature

Topr

–40 to +85

°C

Storage temperature

Tstg

–50 to +125

°C

Parameter

Symbol

Conditions

min

typ

max

Unit

Operating supply voltage

4.5

5.5

V

High-level input voltage

ACK pin

V

Low-level input voltage

ACK pin

V

DC Electrical Characteristics at Ta = 25°C

± 2°C, V

Parameter

Symbol

Conditions

min

typ

max

Unit

Operating supply current

3

7

mA

High-level output current

–0.4

mA

Low-level output current

1

mA

Input impedance

Zin

INPUT pin

10

k

Ω

Ordering number: EN4431A

CMOS LSI

LC73861, LC73862

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

93097HA(II)/90793JN B8-0375 No.4431-1/5