Datasheet > ML145443

ML145443

更新时间： 2024-09-17 04:15:27

品牌	Logo	应用领域
LANSDALE		调制解调器
页数	文件大小	规格书
11页	800K
描述
Single-Chip 300-Baud Modem

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数据手册

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ML145443 数据手册

ML145442

ML145443

Single–Chip 300–Baud Modem

Legacy Device: Motorola MC145442B, MC145443B

The ML145442 and ML145443 silicon–gate CMOS single–chip low–speed

modems contain a complete frequency shift keying (FSK) modulator, demod-

ulator, and filter. These devices are compatible with CCITT V.21 (ML145442)

and Bell 103 (ML145443) 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.

P DIP 20 = RP

PLASTIC DIP

CASE 738

SOG 20 = -6P

SOG PACKAGE

CASE 751D

This Device Offers The Following Performance Features:

CROSS REFERENCE/ORDERING INFORMATION

PACKAGE

MOTOROLA

MC145442BP

LANSDALE

ML145442RP

• ML145442 Compatible with CCITT V.21

• ML145443 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

P DIP 20 H

SO 20W

MC145442BDW ML145442-6P

P DIP 20 H

SO 20W

MC145443BP

ML145443RP

MC145443BDW ML145443-6P

• Analog Loopback Configuration for Self Test

• Hybrid Network Function On–Chip

• Carrier Detect Circuit On–Chip

Note: Lansdale lead free (Pb) product, as it

becomes available, will be identified by a part

number prefix change from ML to MLE.

• Adjustable Transmit Level and CD Delay Timing

• On–Chip Crystal Oscillator (3.579 MHz)

• Single +5 V Power Supply Operation

• Internal Mid–Supply Generator

PIN ASSIGNMENT

• Power–Down Mode

DSI

20 TLA

• Pin Compatible with MM74HC943

• Capable of Driving –9 dBm into a 600 W Load

• Operating Temperature Range = T –40° to +85°C

18 Exl

17 TxA

CDT

RxD

16 RxA1

15 RxA2

14 SQT

13 MODE

CDA

out

FB 10

11 TxD

Page 1 of 11

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Issue Bb

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