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MC145442 Folha de dados(PDF) 1 Page - Motorola, Inc

Nome de Peças MC145442
Descrição Electrónicos  SINGLE-CHIP 300-BAUD MODEM
Download  12 Pages
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Fabricante Electrônico  MOTOROLA [Motorola, Inc]
Página de início  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

MC145442 Folha de dados(HTML) 1 Page - Motorola, Inc

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MC145442
•MC145443
MOTOROLA
1
Single-Chip 300-Baud Modem
The MC145442 and MC145443 silicon–gate CMOS single–chip low–speed
modems contain a complete frequency shift keying (FSK) modulator, demodu-
lator, and filter. These devices are with CCITT V.21 (MC145442) and Bell 103
(MC145443) specifications. Both devices provide full–duplex or half–duplex
300–baud data communication over a pair of telephone lines. They also include
a carrier detect circuit for the demodulator section and a duplexer circuit for
direct operation on a telephone line through a simple transformer.
• MC145442 Compatible with CCITT V.21
• MC145443 Compatible with Bell 103
• Low–Band and High–Band Band–Pass Filters On–Chip
• Simplex, Half–Duplex, and Full–Duplex Operation
• Originate and Answer Mode
• Analog Loopback Configuration for Self Test
• Hybrid Network Function On–Chip
• Carrier Detect Circuit On–Chip
• Adjustable Transmit Level and CD Delay Timing
• On–Chip Crystal Oscillator (3.579 MHz)
• Single + 5 V Power Supply Operation
• Internal Mid–Supply Generator
• Power–Down Mode
• Pin Compatible with MM74HC943
• Capable of Driving – 9 dBm into a 600 Ω Load
Order this document
by MC145442/D
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
PIN ASSIGNMENT
MC145442
MC145443
P SUFFIX
PLASTIC DIP
CASE 738
DW SUFFIX
SOG PACKAGE
CASE 751D
20
1
20
1
VDD
CDT
CD
LB
DSI
FB
Xin
Xout
CDA
RxD
5
4
3
2
1
10
9
8
7
6
14
15
16
17
18
19
20
11
12
13
RxA1
TxA
Exl
VAG
TLA
TxD
VSS
MODE
SQT
RxA2
ORDERING INFORMATION
MC145442P
Plastic DIP
MC145443P
Plastic DIP
MC145442DW SOG Package
MC145443DW SOG Package
© Motorola, Inc. 1995
REV 1
8/95


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