XRT5894ES Exar, XRT5894ES Datasheet

XRT5894ES

Manufacturer Part Number

XRT5894ES

Description

Peripheral Drivers & Components - PCIs 4 CH E1 AFE

Manufacturer

Exar

Datasheet

1.XRT5894ES.pdf (19 pages)

Specifications of XRT5894ES

Product Category

Peripheral Drivers & Components - PCIs

Rohs

yes

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FEATURES

D Compliant with ITU G.703 Pulse Mask Template for

D Four Independent CEPT Transceivers

D Supports Differential Transformer Coupled

D On Chip Pulse Shaping for Both 75W and 120W Line

D Compliant with ITU G.775 LOS Declaration/Clearing

D Optional User Selectable LOS Declaration/Clearing

GENERAL DESCRIPTION

The XRT5894 is an optimized four channel 3.3V line

interface unit fabricated using low power CMOS

technology. The device contains four independent E1

channels. Each channel performs the driver and receiver

functions necessary to convert bipolar signals to logical

levels and vice versa. The device requires transformers

on both receiver and transmitter sides, and supports both

balanced and unbalanced interfaces.

ORDERING INFORMATION

2.048Mbps (E1) Rates

Receivers and Transmitters

Drivers

Recommendation

Delay

Rev. 1.10

E2000

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z FAX (510) 668-7017

XRT5894IV

Part No.

64 Lead TQFP (10 x 10 x 1.4mm)

Package

D Logical Inputs Accept either 3.3V or 5.0V Levels

D Ultra-Low Power Dissipation

D +3.3V or 5.0V Supply Operations

D Individual Transmit Channel Over Temperature

APPLICATIONS

D SDH Multiplexer

D Digital Cross Connects

The device offers two distinct modes of LOS detection.

The first method, which does not require an external

clock, provides an LOS output indication signal with

thresholds and delay that comply with the ITU G.775

requirements. In the second mode, the user provides an

external clock that increases the delay for LOS

declaration and clearing. This feature provides the user

with the flexibility to implement LOS specifications that

require a delay greater than the G.775 requirements.

Protection

Line Interface (3.3V or 5.0V)

Temperature Range

-40°C to +85°C

Operating

Four-Channel E1

March 2000-3

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