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MAX3774

Description
Dual-Rate Fibre Channel Repeaters
File Size181KB,9 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX3774 Overview

Dual-Rate Fibre Channel Repeaters

19-2192; Rev 0; 10/01
Dual-Rate Fibre Channel Repeaters
General Description
The MAX3772–MAX3775 are dual-rate (1.0625Gbps
and 2.125Gbps) fibre channel repeaters. They are opti-
mized for use in fibre channel arbitrated loop applica-
tions and operate from a +3.3V supply. The
MAX3772–MAX3775 exceed fibre channel jitter toler-
ance requirements and can recover data signals with
up to 0.7 unit interval (UI) jitter. The circuit’s fully inte-
grated phase-locked loop (PLL) provides a frequency
lock indication and does not need an external reference
clock. These repeaters provide low-jitter CML clock and
data outputs, and are pin compatible with the MAX3770
repeater (except RATESEL pin and exposed paddle).
The MAX3773/MAX3774 can also be used for imped-
ance transformation between 100Ω (differential) and
150Ω (differential) systems. To reduce the number of
external components, all signal inputs and outputs are
internally terminated. The MAX3772–MAX3775 are
available in 16-pin QSOP-EP packages.
Features
o
Pin Selectable 1.0625Gbps/2.125Gbps Dual-Rate
Fibre Channel Operation
o
Exceeds Fibre Channel Jitter Tolerance
Requirements
o
1400mV Differential Output Swing
o
+3.0V to +3.6V Operation
o
No Reference Clock Required
o
Frequency Lock Indication
o
290mW Power Consumption (MAX3775) at +3.3V
o
100Ω/150Ω (differential) Input/Output
Terminations
MAX3772–MAX3775
Ordering Information
PART
MAX3772CEE
MAX3773CEE
MAX3774CEE
MAX3775CEE
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
16 QSOP-EP
16 QSOP-EP
16 QSOP-EP
16 QSOP-EP
Applications
1.0625Gbps/2.125Gbps Dual-Rate
Fibre Channel
Fibre Channel Data Storage Systems
Storage Area Networks
Fibre Channel Hubs
100Ω/150Ω (Differential) Impedance
Transformation
Pin Configuration appears at end of data sheet.
Selector Guide appears at end of data sheet.
Typical Operating Circuits
0.047µF
LOUT+
LOCK
LIN-
LIN+
LOUT+
LIN-
SEL
LOUT-
CLK+
CLK-
IN+
OUT+
Z
o
= 75Ω
Z
o
= 75Ω
IN+
IN-
MAX3750
IN-
V
CC
SEL
OUT-
GND
MAX3775
RATESEL
OUT+
OUT-
Z
o
= 75Ω
Z
o
= 75Ω
IN+
LOUT-
OUT+
MAX3750
IN-
V
CC
OUT-
GND
CLKEN
3.3V
0.1µF
3.3V
0.1µF
GND
V
CC
3.3V
0.1µF
PORT BYPASS CIRCUIT
FIBRE CHANNEL REPEATER
PORT BYPASS CIRCUIT
________________________________________________________________
Maxim Integrated Products
LIN+
CF+
CF-
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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