900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Exar Corporation

XRT5997 Datasheet Preview

XRT5997 Datasheet

Seven-Channel E1 Line Interface Unit

No Preview Available !

www.DataSheet4U.com
XRT5997
Seven-Channel E1
Line Interface Unit
November 1999-2
FEATURES
The Main features are as follows:
l Consists of Seven (7) Independent E1 (CEPT)
Line Interface Units (Transmitter and Receiver)
l Generates Transmit Output Pulses that are
Compliant with the ITU-T G.703 Pulse Template
Requirement for 2.048Mbps (E1) Rates
l On-Chip Pulse Shaping for both 75and 120
line drivers
l Receiver Can Either Be Transformer or
Capacitive-Coupled to the Line
l Detects and Clears LOS (Loss of Signal) Per
ITU-T G.775
l Compliant with the ITU-T G.823 Jitter Tolerance
Requirements
l Compliant with ITU G. 703 EOS Over-voltage
protection Requirement
l Logic Inputs Accept Either 3.3V or 5.0V Levels
l Operates over the Industrial Temperature Range
l Ultra Low Power Dissipation
l +3.3V Supply Operation
APPLICATIONS
l PDH Multiplexers
l SDH Multiplexers
l Digital Cross-Connect Systems
l DECT (Digital European Cordless Telephone)
Base Stations
l CSU/DSU Equipment
GENERAL DESCRIPTION
The XRT5997 is an optimized seven-channel analog
E1 line interface unit fabricated using low power 3.3V
CMOS technology. Each channel consists of both a
Transmitter and a Receiver function. The Transmitter
accepts a TTL or CMOS level signal from the Terminal
Equipment; and outputs this data to the line via bipolar
pulses that are compliant to the ITU-T G.703 pulse
template for E1. The Receiver accepts an attenuated
bipolar line signal (from the remote terminal equipment)
and outputs this data to the (near-end) terminal equip-
ment via CMOS level signals.
Each Receiver input can be transformer or capacitive-
coupled to the line. The Receiver input is transformer-
coupled to the line, using a 2:1 step-down transformer.
Each Transmitter is coupled to the line using a 1:2 step-
up transformer. This same configuration is applicable
for both balanced (120) and unbalanced (75)
interfaces.
ORDERING INFORMATION
Part No.
XRT5997IV
Package
100-Lead TQFP (14 x 14 x 1.4 mm)
Operating
Temperature Range
-40°C to +85°C
Rev. 1.0.0
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com




Exar Corporation

XRT5997 Datasheet Preview

XRT5997 Datasheet

Seven-Channel E1 Line Interface Unit

No Preview Available !

XRT5997
RTIP
RRing
R eRce civeeiv
EEqquuaaleilziezer r
P e a kPDeeatke c to r /
DeSStleliicceteor r/
r
RxLOS
DDeLeLtOetOecScStotor
r
Channel 7
Channel 6
Channel 5
Channel 4
Channel 3
Channel 2
Channe
l1
R e c eRiveec eOivuetp u t
InIOtnetureftarpfcauect
e
RxPOS
RxNEG
TTIP
TRing
P u ls ePSuhlsaep in g
CSCihricarucpuiitnitg
T r aTnrsamnistmI ni tp u t
InIntetIenrfrpafaucctee
TxPOS
TxNEG
TxClk
Figure 1. XRT5997 Block Diagram
Rev. 1.0.0
2


Part Number XRT5997
Description Seven-Channel E1 Line Interface Unit
Maker Exar Corporation
Total Page 30 Pages
PDF Download

XRT5997 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 XRT5990 Single Chip Pulse / Tone Dialer
Exar
2 XRT5997 Seven-Channel E1 Line Interface Unit
Exar Corporation





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy