19-2192; Rev 0; 10/01
Dual-Rate Fibre Channel Repeaters
General Description
Features
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.
ꢀ Pin Selectable 1.0625Gbps/2.125Gbps Dual-Rate
Fibre Channel Operation
ꢀ Exceeds Fibre Channel Jitter Tolerance
Requirements
ꢀ 1400mV Differential Output Swing
ꢀ +3.0V to +3.6V Operation
ꢀ No Reference Clock Required
ꢀ Frequency Lock Indication
ꢀ 290mW Power Consumption (MAX3775) at +3.3V
ꢀ 100Ω/150Ω (differential) Input/Output
Terminations
Ordering Information
PART
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
MAX3772CEE
MAX3773CEE
MAX3774CEE
MAX3775CEE
Fibre Channel Data Storage Systems
Storage Area Networks
Fibre Channel Hubs
Pin Configuration appears at end of data sheet.
Selector Guide appears at end of data sheet.
100Ω/150Ω (Differential) Impedance
Transformation
Typical Operating Circuits
0.047µF
CLK+
CLK-
OUT+
Z = 75Ω
Z = 75Ω
IN+
IN-
IN+
IN-
IN+
IN-
OUT+
OUT-
OUT+
OUT-
o
o
MAX3775
MAX3750
MAX3750
Z = 75Ω
o
OUT-
Z = 75Ω
o
3.3V
3.3V
3.3V
0.1µF
0.1µF
0.1µF
FIBRE CHANNEL REPEATER
PORT BYPASS CIRCUIT
PORT BYPASS CIRCUIT
________________________________________________________________ Maxim Integrated Products
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.