MC145446

更新时间： 2024-11-23 22:36:27

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		调制解调器
页数	文件大小	规格书
14页	267K
描述
Single-Chip 300-Baud Modem with DTMF Transceiver

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数据手册

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MC145446 数据手册

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by MC145446A/D

SEMICONDUCTOR TECHNICAL DATA

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FW SUFFIX

SOP

CASE 751M

The MC145446A is a silicon gate CMOS frequency shift keying (FSK)

modem intended for use with telemeter systems or remote control systems over

the telephone network. It replaces the MC145446.

This device is compatible with CCITT V.21 and contains the entire circuit that

provides a full–duplex or half–duplex 300–baud data communication over a pair

of telephone lines. This device also includes the DTMF generator/receiver and

call progress tone detector (CPTD).

ORDERING INFORMATION

MC145446AFW

SOP

The differential line driver has the capability of driving 0 dBm into a 600 Ω load

with a single 5 V power supply. The transmit level is controlled by the

programmable attenuator in 1 dB steps.

PIN ASSIGNMENT

This device also includes a serial control interface and internal control and

status registers that permit a CPU to exercise the following built–in features:

FTLC1

RxBO

GND

•

Single 5 V Power Supply

Compatible with CCITT V.21

DTMF Generator and Receiver for All 16 Standard Digits

Capable of Driving 0 dBm into a 600 Ω Load (V

AGC (Auto Gain Control) Amplifier for DTMF Receiver

Imprecise Call Progress Tone (400 Hz) Detector

A Transmit Attenuator Programmable in 1 dB Steps

2100 Hz Answer Tone Generator

Serial Control Interface

Analog Loopback Configuration for Self Test

RxGC

RxA

ref

CDA

DTMF IN

AGC OUT

FTLC2

= 5 V)

TxA1

TxA2

DSI

FTLC3

X2 10

SCK

DATA I/O

TxD

Power–Down Mode, Less than 1 µA

TLA 11

GND

RxD

R/W 14

SD/CD/DV

This document contains information on a new product. Specifications and information herein are subject to change without notice.

REV 1

7/96

Motorola, Inc. 1996

MOTOROLA

MC145446A

12 3 4 5 6 7...14

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与MC145446相关器件

型号	品牌	获取价格	描述	数据表
MC145446A	MOTOROLA	获取价格	Single-Chip 300-Baud Modem with DTMF Transceiver
MC145446AFW	MOTOROLA	获取价格	Single-Chip 300-Baud Modem with DTMF Transceiver
MC145446AFWEL	MOTOROLA	获取价格	暂无描述
MC145447	MOTOROLA	获取价格	Calling Line Identification(CLID) Receiver with Ring Detector
MC145447DW	MOTOROLA	获取价格	Calling Line Identification(CLID) Receiver with Ring Detector
MC145447DWR2	MOTOROLA	获取价格	TELEPHONE MULTIFUNCTION CKT, PDSO16, SOG-16
MC145447P	MOTOROLA	获取价格	Calling Line Identification(CLID) Receiver with Ring Detector
MC14544B	MOTOROLA	获取价格	BCD-to-Seven Segment Latch/Decoder/Driver for Liquid Crystals
MC14544BAL	MOTOROLA	获取价格	Seven Segment Decoder/Driver, 4000/14000/40000 Series, Configurable Output, CMOS, CDIP18,
MC14544BALD	MOTOROLA	获取价格	4000/14000/40000 SERIES, SEVEN SEGMENT DECODER/DRIVER, CONFIGURABLE OUTPUT, CDIP18, 726-04