參數(shù)資料
型號(hào)： 78P2253-IGT
廠商： Electronic Theatre Controls, Inc.
英文描述： XTAL CER SMT 11X5 4PAD
中文描述： 收發(fā)器
文件頁(yè)數(shù)： 1/23頁(yè)
文件大?。?/td> 107K
代理商： 78P2253-IGT
Advanced Information
78P2253
E4/STM-1/STS-3/OC-3
Transceiver
November 2000
DESCRIPTION
The 78P2253 is a transceiver IC designed for
139.264Mbit/s (E4) or 155.52Mbit/s (OC-3, STS-3 or
STM-1) transmission. It is used at the interface to a
75
coaxial cable using CMI coding or a fiber optic
module. Interface to digital framer circuits is
accomplished via a serial PECL or parallel CMOS
interface.
The transmitter includes a PLL to multiply the
reference clock to the transmission frequency. The
receiver provides adaptive equalization for accurate
clock and data recovery. The 78P2253 is built in a
BiCMOS technology for high performance and low
power operation. It operates with a 3.3V or 5V power
supply and is packaged in a 64-pin TQFP.
FEATURES
139.264Mbit/s or 155.52Mbit/s interface for
CMI coded transmission using 75
W
coaxial
cable
Compliant with ITU-T G.703, G.823 jitter
tolerance, Telcordia TR-NWT-00253
Integrated Clock Recovery Unit (CRU)
Serial PECL Interface
Four and Eight bit Parallel CMOS Interfaces
PECL Interfaces for connection to Fiber
Optic Modules for SONET OC3 applications
Adaptive Equalization
Integrated Clock Multiplier PLL
Advanced BiCMOS Process
BLOCK DIAGRAM
Crystal
Oscillator
Clock
Generator
Binary
to CMI
Clock
Recovery
Adaptive
Equalizer
CMI to
Binary
Bias
X
X
C
E
R
L
ECLINN
ECLINP
CMIINN
CMIINP
ECLOUTN
ECLOUTP
CMIOUTN
CMIOUTP
CKIN
TXCK
TXCKP,N
TXDTP,N
TXDT[7:0]
RXDTP,N
RXDT[7:0]
RXCKP,N
RXCK
L
RLBACK
L
Signal
Detector
8
$
E
S
P
S
H
H
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
78P2254 制造商:未知廠家 制造商全稱:未知廠家 功能描述:OC-3 / STM-1 / STS-3 / E4 Transceivers
78P2254-IGT 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecomm/Datacomm
78P2342-IGT 制造商:TERIDIAN 制造商全稱:TERIDIAN 功能描述:2-port E3/DS3/STS-1 LIU with Jitter Attenuator
78P2342-IGT/A07 制造商:TERIDIAN 制造商全稱:TERIDIAN 功能描述:2-port E3/DS3/STS-1 LIU with Jitter Attenuator
78P2342-IGT/F 制造商:Maxim Integrated Products 功能描述:LEAD FREE - Rail/Tube
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