Maxim MAX3771CEE, MAX3770CEE Datasheet
General Description
The MAX3770 is a 2.125Gbps Fibre Channel repeater
IC. The MAX3771 provides a pin-compatible solution
for 1.063Gbps Fibre Channel. Both devices are optimized for use in Fibre Channel arbitrated-loop applications and operate from a 3.3V supply.
The MAX3770 is compatible with Fibre Channel jitter tolerance requirements and can recover data signals with up
to 0.7 unit interval (UI) jitter. The circuit’s fully integrated
phase-locked loop (PLL) provides a frequency lock indication and does not need an external reference clock.
The MAX3770 provides low-jitter CML clock and data
outputs. To reduce the external parts count, all signal
inputs and outputs are internally terminated. The
MAX3770/MAX3771 are available in 16-pin QSOP
packages.
________________________Applications
2.125Gbps Fibre Channel Storage Area Networks
1.063Gbps Fibre Channel Fibre Channel Hubs
Fibre Channel Storage Systems
Features
♦ Meet Fibre Channel Jitter Tolerance Requirements
♦ 3.0V to 3.6V Operation
♦ Internally Terminated Data and Clock I/O
♦ Reference Clock Not Required
♦ Frequency Lock Indication
♦ Low Power Consumption
215mW at 3.3V (MAX3770)
190mW at 3.3V (MAX3771)
MAX3770/MAX3771
2.125Gbps/1.063Gbps, 3.3V
Fibre Channel Repeaters
________________________________________________________________ Maxim Integrated Products 1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
FILT+ LOCK
CLK+
CLK-
CLKEN
GND
OUT+
OUT-
LOCKEN
TOP VIEW
MAX3770
MAX3771
QSOP
FILT-
GND
GND
IN+
IN-
V
CC
V
CC
Pin Configuration
3.3V
Z
o
= 75Ω
PORT BYPASS CIRCUIT
DATA REPEATER
Zo = 75Ω
MAX3770
MAX3771
CLK+
CLK-
GND
LOCKEN
CLKEN
V
CC
0.22µF
0.1µF
OUT+
OUT-
IN+
IN-
FILT-
FILT+
LOCK
3.3V
MAX3750
MAX3751
GND
SEL
V
CC
0.1µF
OUT+
OUT-
IN+
IN-
LIN+
LIN-
LOUT-
LOUT+
PORT BYPASS CIRCUIT
3.3V
MAX3750
MAX3751
GND
SEL
V
CC
0.1µF
OUT+
OUT-
IN+
IN-
LIN+
LIN-
LOUT-
LOUT+
Zo = 75Ω
Zo = 75Ω
Typical Application Circuit
19-1634; Rev 0; 1/00
EVALUATION KIT
AVAILABLE
Ordering Information
*Future product—contact factory for availability.
MAX3771CEE*
0°C to +70°C 16 QSOP
PART
MAX3770CEE
0°C to +70°C
TEMP. RANGE PIN-PACKAGE
16 QSOP
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX3770/MAX3771
2.125Gbps/1.063Gbps, 3.3V
Fibre Channel Repeaters
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(VCC= +3.0V to +3.6V, TA= 0°C to +70°C, unless otherwise noted. Typical values are at TA= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1: Supply current includes output currents.
Supply Voltage, V
CC
..............................................-0.5V to +5.0V
Pin Voltage Levels (IN+, IN-, FILT+, FILT-,
LOCKEN, CLKEN, LOCK) ....................-0.5V to (V
CC
+ 0.5V)
LOCK Output Current .........................................-1mA to +10mA
CML Output Currents OUT+, OUT-,
CLK+, CLK-.................................................-22mA to +22mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin TQFP (derate 6.7mW/°C above +70°C)..........533mW
Operating Temperature Range...............................0°C to +70°C
Storage Temperature Range .............................-55°C to +150°C
Processing Temperature (die) .........................................+400°C
Lead Temperature (soldering, 10s) .................................+300°C
CLKEN = GND
CLKEN = V
CC
OUT+, OUT-, CLK+, CLK-
IOH= -100µA
IOL= +1mA
R
LOAD
= 150Ω, Figure 1
Sum of I
OUT+
and I
OUT-
CONDITIONS
Ω132 150 181Differential Output Resistance
Ω132 150 181Differential Input Resistance
µA-5 +5
CLOCKEN and LOCKEN
Input Current
VVCC- 1.03Voltage at FILT+, FILT-
VVCC- 0.45Input Common-Mode Voltage
mVp-p200 2200Differential Input Voltage Swing
57
81 112
63
V2.4LOCK Output High
V0.7LOCK Output Low
mA
67.5 91
mVp-p400 780 1000
Differential Voltage Signal at
OUT or CLOCK
mA10.5
Output Current at OUT or
CLOCK
UNITSMIN TYP MAXPARAMETER
Supply Current (Note 1)
MAX3771
MAX3770
MAX3771
MAX3770
ps/rms
MAX3770/MAX3771
2.125Gbps/1.063Gbps, 3.3V
Fibre Channel Repeaters
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS
(VCC= +3.0V to +3.6V, TA= 0°C to +70°C, unless otherwise noted. Typical values are at TA= +25°C.)
Note 2: K28.7+ pattern: 0011111000
Note 3: Compliant random pattern (CRPAT) in hex:
Pattern No. of Occurrences
3EAA2AAAAA 6
3EAAA6A5A9 1
86BA6C6475 D0E8DCA8B4 7949EAA665 16
72319A95AB 1
C16AAA9AA6 1
Note 4: K28.5± pattern: 00111110101100000101
Note 5: Random and deterministic jitter generation at 2.125Gbps is measured with 0.38UI deterministic jitter, and 0.22UI random
jitter (BER = 1 x 10
-12
) applied to the input. Random and deterministic jitter generation at 1.063Gbps is measured with
0.18UI deterministic jitter, and 0.08UI random jitter (BER = 1 x 10
-12
) applied to the input.
Jitter tolerance at 2.125Gbps is measured with 0.38UI deterministic jitter and 0.22UI random jitter (BER = 1 x 10
-12
) applied
to the input. Jitter tolerance at 1.063Gbps is measured with 0.18UI deterministic jitter, and 0.08UI jitter (BER = 1 x 10
-12
)
applied to the input.
Note 6: Compliant jitter tolerance pattern in hex (CJTPAT):
Pattern No. of Occurrences
3EAA2AAAAA 6
3EAAA6A5A9 1
871E3871E3 41
871E3870BC78F4AAAAAA 1
AAAAAAAAAA 12
AAA15555E3 871E3871E1 1
AB9C9686E6 1
C16AAA9AA6 1
Note 7: Jitter tolerance measurements at 85kHz and 1270kHz are limited by test equipment. Actual jitter tolerance > indicated.
TA= +25°C
CONDITIONS
Input = CRPAT (Note 3)
Input = CRPAT (Notes 3, 5)
Input = K28.5± (Note 4)
Input = CRPAT (Notes 3, 5)
ps
p-p
15.6 22
3.9 7.3
2.3 3.1
27 48
UIJitter Tolerance
UNITSMIN TYP MAXPARAMETER
Deterministic Jitter Generation
f = 85kHz (Note 7) 1.5 4.22
ps135 170Edge Speed
TA= +25°C ps
RMS
3.4 5.3
Random Jitter Generation at
Data Output
Input = K28.7+ (Note 2)
20% to 80%
f = 1270kHz (Note 7) 0.1 0.89
Input = CJTPAT (Note 6) ms4.4CDR Lock Time from Start
f = 10MHz 0.36
TA= +25°C (Note 5),
input = CJTPAT (Note 6)
ps50 240 300Clock to Q Delay
ps1000 1500Propagation Delay
Input = K28.7+ (Note 2)
TA= +25°C ps
RMS
3.9
Random Jitter Generation at
Data Output
Input = CRPAT (Note 3) 2.3
Input = CRPAT (Notes 3, 5) 3.4
Input = K28.5± (Note 4)
TA= +25°C
ps
p-p
17
Deterministic Jitter Generation
Input = CRPAT (Notes 3, 5) ps
p-p
36
f = 42.5kHz
TA= +25°C (Note 5),
input = CJTPAT (Note 6),
BER = IE-12
UI
3.1
Jitter Tolerance
f = 635kHz 0.54
f = 5MHz 0.3
OPERATION AT 2.125Gbps
OPERATION AT 1.063Gbps
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