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LXT351QE

Description
PCM Transceiver, 1-Func, PQFP44, PLASTIC, QFP-44
CategoryWireless rf/communication    Telecom circuit   
File Size2MB,52 Pages
ManufacturerLevel One
Download Datasheet Parametric Compare View All

LXT351QE Overview

PCM Transceiver, 1-Func, PQFP44, PLASTIC, QFP-44

LXT351QE Parametric

Parameter NameAttribute value
MakerLevel One
Parts packaging codeQFP
package instruction,
Contacts44
Reach Compliance Codeunknown
JESD-30 codeS-PQFP-G44
Number of functions1
Number of terminals44
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
Package shapeSQUARE
Package formFLATPACK
Certification statusNot Qualified
Nominal supply voltage5 V
surface mountYES
Telecom integrated circuit typesPCM TRANSCEIVER
Temperature levelINDUSTRIAL
Terminal formGULL WING
Terminal locationQUAD
DATA SHEET
JUNE 1999
LXT350/351
General Description
The LXT350 and LXT351 are full-featured, fully-
integrated transceivers for T1 and E1 short-haul
applications. They are software switchable between T1 and
E1 operation, and offer pulse equalization settings for all
short-haul T1 and E1 line interface (LIU) applications.
The LXT350 and LXT351 are identical except for their
control interface. The LXT350 provides both a serial I/O
port for microprocessor control and a hardware control
mode for stand alone operation. The LXT351 offers an
Intel- or Motorola-bus compatible parallel I/O port for
microprocessor control. Both incorporate advanced
crystal-less digital jitter attenuation in either the transmit or
receive data path starting at 3 Hz. B8ZS/HDB3 encoding/
decoding and unipolar or bipolar data I/O are available.
Both LIUs provide loss of signal monitoring and a variety
of diagnostic loopback modes.
The LXT350/351 design uses an advanced double-poly,
double-metal fabrication process and requires only a single
5-volt power supply.
Revision 1.0
Integrated T1/E1 S/H Transceivers with Crystal-less Jitter
Attenuation
Features
• Fully integrated transceiver for short-haul T1 or E1
interfaces
• Crystal-less digital jitter attenuation
• Selectable either transmit or receive path
• No crystal or high-speed external clock required
• Meet or exceed specifications in ANSI T1.403 and
T1.408; ITU G.703, G.736, G.775 and G.823; ITU-T
I.431; ETSI 300-166 and 300-233; and AT&T
Pub 62411
• Supports 75
(E1 coax), 100
(T1 twisted-pair) and
120
(E1 twisted-pair) applications
• Fully restores the received signal after transmission
through a cable with attenuation of 18dB, at 1024 kHz
• Five pulse equalization settings for T1 short-haul
applications
• Transmit/receive performance monitors with Driver
Fail Monitor Open (DFM) and Loss of Signal (LOS)
outputs
• Selectable unipolar or bipolar data I/O and B8ZS/
HDB3 encoding/decoding
• QRSS generator/detector for testing or monitoring
• Output short circuit current limit protection
• Local, remote and analog loopback capability
• Multiple-register serial- or parallel-control interface
• Compatible with Level One’s LXT360/361 T1/E1
long haul/short haul transceiver (Universal LIU)
Applications
SONET/SDH tributary interfaces
Digital cross connects
Public/private switching trunk line interfaces
Microwave transmission systems
LXT350/351 Block Diagram
Refer to www.level1.com for most current information.
)

LXT351QE Related Products

LXT351QE LXT351NE LXT351PE
Description PCM Transceiver, 1-Func, PQFP44, PLASTIC, QFP-44 PCM Transceiver, 1-Func, CEPT PCM-30/E-1, CMOS, PDIP28, PLASTIC, DIP-28 PCM Transceiver, 1-Func, CEPT PCM-30/E-1, CMOS, PQCC28, PLASTIC, LCC-28
Maker Level One Level One Level One
Parts packaging code QFP DIP QLCC
package instruction , DIP, DIP28(UNSPEC) QCCJ, LDCC28,.5SQ
Contacts 44 28 28
Reach Compliance Code unknown unknown unknown
JESD-30 code S-PQFP-G44 R-PDIP-T28 S-PQCC-J28
Number of functions 1 1 1
Number of terminals 44 28 28
Maximum operating temperature 85 °C 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
Package shape SQUARE RECTANGULAR SQUARE
Package form FLATPACK IN-LINE CHIP CARRIER
Certification status Not Qualified Not Qualified Not Qualified
Nominal supply voltage 5 V 5 V 5 V
surface mount YES NO YES
Telecom integrated circuit types PCM TRANSCEIVER PCM TRANSCEIVER PCM TRANSCEIVER
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal form GULL WING THROUGH-HOLE J BEND
Terminal location QUAD DUAL QUAD
Is it Rohs certified? - incompatible incompatible
Carrier type - CEPT PCM-30/E-1 CEPT PCM-30/E-1
Carrier Type (2) - T-1(DS1) T-1(DS1)
JESD-609 code - e0 e0
encapsulated code - DIP QCCJ
Encapsulate equivalent code - DIP28(UNSPEC) LDCC28,.5SQ
power supply - 5 V 5 V
technology - CMOS CMOS
Terminal surface - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
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