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MC145443B 数据表(PDF) 1 Page - Motorola, Inc

部件名 MC145443B
功能描述  SINGLE-CHIP 300-BAUD MODEM
Download  12 Pages
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制造商  MOTOROLA [Motorola, Inc]
网页  http://www.freescale.com
标志 MOTOROLA - Motorola, Inc

MC145443B 数据表(HTML) 1 Page - Motorola, Inc

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MC145442B
•MC145443B
MOTOROLA
1
Single-Chip 300-Baud Modem
The MC145442B and MC145443B silicon–gate CMOS single–chip low–
speed modems contain a complete frequency shift keying (FSK) modulator,
demodulator, and filter. These devices are compatible with CCITT V.21
(MC145442B) and Bell 103 (MC145443B) 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.
• MC145442B Compatible with CCITT V.21
• MC145443B 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 MC145442B/D
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
PIN ASSIGNMENT
MC145442B
MC145443B
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
MC145442BP
Plastic DIP
MC145443BP
Plastic DIP
MC145442BDW
SOG Package
MC145443BDW
SOG Package
REV 1
9/00
© Motorola, Inc. 2000


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