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MC145745FW PDF预览

MC145745FW

更新时间: 2024-10-01 22:58:11
品牌 Logo 应用领域
摩托罗拉 - MOTOROLA 调制解调器电信集成电路电信电路遥测光电二极管
页数 文件大小 规格书
16页 176K
描述
V.21/V.23 Telemeter Modem

MC145745FW 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SOP, SOP28,.4
针数:28Reach Compliance Code:unknown
HTS代码:8542.39.00.01风险等级:5.2
Is Samacsys:N其他特性:DATA RATE MIN:0.3BPS
数据速率:1.2 MbpsJESD-30 代码:R-PDSO-G28
JESD-609代码:e0长度:17.915 mm
功能数量:1端子数量:28
最高工作温度:85 °C最低工作温度:-30 °C
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP28,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):NOT SPECIFIED
电源:3.6 V认证状态:Not Qualified
座面最大高度:2.65 mm子类别:Modems
标称供电电压:5 V表面贴装:YES
技术:CMOS电信集成电路类型:MODEM
温度等级:OTHER端子面层:TIN LEAD
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.51 mmBase Number Matches:1

MC145745FW 数据手册

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Order this document  
by MC145745/D  
SEMICONDUCTOR TECHNICAL DATA  
Product Preview  
The MC145745 is a selectable modem chip compatible with ITU V.21  
(300 baud full duplex asynchronous) and V.23 mode 2 (1200 baud half duplex  
asynchronous). The built–in differential line driver has the capability of driving  
0 dBm into a 600 load with a 5 V single power supply. This device also  
includes a DTMF generator, DTMF receiver, call–progress tone detector,  
answer tone generator, and a receive timing control circuit.  
Besides having a clock generator with a crystal oscillator connected to it, the  
device has a divider circuit to which input of a double frequency clock is possible  
from external sources, such as from a microcontroller unit (MCU). The serial  
control port (SCP) permits the MCU to access internal registers for exercising  
the built–in features.  
FW SUFFIX  
SOIC  
CASE 751M  
28  
1
ORDERING INFORMATION  
MC145745FW SOIC  
PIN ASSIGNMENT  
A low consumption device, the MC145745 integrates various functions in a  
small package. This modem IC is best suited for telemeter and other  
applications of this type.  
GND  
1
2
28  
27  
V
CC  
V
RxA  
ref  
3
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
Conforms to ITU V.21 and V.23 Recommendations  
DTMF Generator and Receiver for all 16 Standard Digits  
CDA  
TLA  
TxA1  
4
TxA2  
Capable of Driving 0 dBm into a 600 Load (V  
= 5 V)  
CC  
5
TEST 1  
RxD  
TEST 2  
SCPEN  
SCPCLK  
SCP Rx  
SCP Tx  
RESET  
PB3  
Automatic Gain Control (AGC) Amplifier for the DTMF Receiver  
Call–Progress Tone Detector  
Four–Wire Serial Data Interface (SCP)  
Programmable Transmission and Carrier Detection Levels  
FSK/DTMF Analog Loopback Self–Test Function  
Crystal Oscillator (3.579545 MHz) and Half Divider Circuit (7.159090 MHz)  
for External Inputs  
6
7
TxD  
8
CD  
CLKO  
X1  
9
10  
X2 11  
Operates in the Voltage Range of 3.3 – 5.5 V  
Power Down Mode (I  
CC  
< 1 µA)  
ECLK  
PB2  
12  
PB0  
PB1  
13  
14  
16  
15  
GND  
V
CC  
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.  
REV 0  
7/96  
Motorola, Inc. 1996  

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