mc145425 Freescale Semiconductor, Inc, mc145425 Datasheet

mc145425

Manufacturer Part Number

mc145425

Description

Isdn Universal Digital Loop Transceivers

Manufacturer

Freescale Semiconductor, Inc

Datasheet

1.MC145425.pdf (16 pages)

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MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

ISDN Universal Digital Loop

Transceivers II

(UDLT II)

capable of providing 160 kbps full–duplex data communication over 26 AWG

and larger twisted–pair cable up to 1 km in length. These devices are primarily

used in digital subscriber voice and data telephone systems. In addition, the

devices meet and exceed the CCITT recommendations for data transfer rates

of ISDNs on a single twisted pair. The devices utilize a 512 kbaud MDPSK burst

modulation technique to supply the 160 kbps full–duplex data transfer rates.

The 160 kbps rate is provided through four channels. There are two B channels,

which are 64 kbps each. In addition, there are two D channels which are

16 kbps each.

with the existing MC145422 and MC145426 80 kbps UDLTs, as well as compa–

tibility with existing and evolving telephone switching hardware and software

architectures.

line card while the MC145425 (Slave) UDLT is designed for use at the remote

digital telset or data terminal.

REV 2 (Replaces ADI1251)

9/95

MOTOROLA

16 kbps D2

16 kbps D1

64 kbps B1

64 kbps B2

The MC145421 and MC145425 UDLTs are high–speed data transceivers

The MC145421 and MC145425 UDLTs are designed for upward compatibility

The MC145421 (Master) UDLT is designed for use at the telephone switch

Motorola, Inc. 1995

Employs CMOS Technology in Order to Take Advantage of Its Proven

Capability for Complex Analog and Digital LSI Functions

Provides Synchronous Full–Duplex 160 kbps Voice and Data

Communication in a 2B+2D Format for ISDN Compatibility

Provides the CCITT Basic Access Data Transfer Rate (2B+D) for ISDNs

on a Single Twisted Pair Up to 1 km

Compatible with Existing and Evolving Telephone Switch Architectures and

Call Signaling Schemes

Protocol Independent

Single + 5 V Power Supply

MC145421EVK is Available

ISDN UDLT

MASTER

160 kbps FULL–DUPLEX

DATA TRANSMISSION

TWISTED PAIR

WIRE

1 km

ISDN UDLT

SLAVE

16 kbps D1

16 kbps D2

64 kbps B1

64 kbps B2

MC145421P

MC145425P

MC145421DW SOG Package

MC145425DW SOG Package

ORDERING INFORMATION

MC145421

MC145425

MC145421 MC145425

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SOG PACKAGE

DW SUFFIX

CASE 751F

CASE 709

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by MC145421/D

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