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SY69753LHI Datasheet

  • SY69753LHI

  • 3.3V 125 MBPS 155 MBPS CLOCK AND DATA RECOVERY

  • 9頁(yè)

  • MICREL   MICREL

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Micrel
3.3V, 125Mbps 155Mbps
CLOCK and DATA RECOVERY
SY69753L
SY69753L
FEATURES
s
Industrial temperature range (鈥?0
擄
C to +85
擄
C)
s
3.3V power supply
s
SONET/SDH/ATM compatible
s
Clock and data recovery for 125Mbps/155Mbps NRZ
data stream
s
Two on-chip PLLs: one for clock generation and
another for clock recovery
s
Selectable reference frequencies
s
Differential PECL high-speed serial I/O
s
Line receiver input: no external buffering needed
s
Link fault indication
s
100k ECL compatible I/O
s
Complies with Bellcore, ITU/CCITT and ANSI
specifications for OC-3 applications
s
Available in 32-pin EPAD-TQFP
DESCRIPTION
The SY69753L is a complete Clock Recovery and Data
Retiming integrated circuit for OC-3/STS-3 applications
at 155Mbps NRZ. The device is ideally suited for SONET/
SDH/ATM applications and other high-speed data
transmission systems.
Clock recovery and data retiming is performed by
synchronizing the on-chip VCO directly to the incoming
data stream. The VCO center frequency is controlled by
the reference clock frequency and the selected divide
ratio. On-chip clock generation is performed through the
use of a frequency multiplier PLL with a byte rate source
as reference.
The SY69753L also includes a link fault detection
circuit.
Data sheets and support documentation can be found on
Micrel鈥檚 web site at www.micrel.com.
APPLICATIONS
s
Ethernet media converter
s
SONET/SDH/ATM OC-3
s
Proprietary architectures at 135Mbps to 180Mbps
BLOCK DIAGRAM
PLLR P/N
RDINP
(PECL)
RDINN
RDOUTP
(PECL)
PHASE
DETECTOR
RDOUTN
RCLKP
(PECL)
RCLKN
0
1
PHASE/
FREQUENCY
DETECTOR
CHARGE
PUMP
VCO
CD (PECL)
LINK FAULT
DETECTION
LFIN
(TTL)
REFCLK
(TTL)
PHASE/
FREQUENCY
DETECTOR
CHARGE
PUMP
VCO
1
0
TCLKP
(PECL)
TCLKN
V
CC
V
CCA
V
CCO
GND
DIVIDER
BY 8, 10, 16, 20
DIVSEL 1/2
(TTL)
PLLS P/N
CLKSEL
(TTL)
Rev.: B
Amendment: /2
1
Issue Date: September 2003

SY69753LHI 產(chǎn)品屬性

  • 250

  • 集成電路 (IC)

  • 時(shí)鐘/計(jì)時(shí) - 專(zhuān)用

  • -

  • 時(shí)鐘和數(shù)據(jù)恢復(fù)（CDR），多路復(fù)用器

  • 是

  • 以太網(wǎng)，SONET/SDH，ATM OC-3

  • PECL

  • PECL

  • 1

  • 1:3

  • 是/是

  • 155Mbps

  • 3.15 V ~ 3.45 V

  • -40°C ~ 85°C

  • 表面貼裝

  • 32-TQFP 裸露焊盤(pán)

  • 32-EPAD-TQFP

  • 托盤(pán)

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