Datasheet
MAX3634
622Mbps/1244Mbps Burst-Mode Clock
Phase Aligner for GPON OLT Applications
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.0V to +3.6V, T
A
= -40°C to +85°C. Typical values are at V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)
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.
V
CC
, V
CC
I, V
CC
O, V
CC
V ........................................-0.5V to +4.0V
SDI±, RST
±, REFCLK±,
RATESEL, FILT, TEST.............................-0.5V to (V
CC
+ 0.5V)
LVPECL Output Current (SDO±, SCLK±, LOCK±).............50mA
Continuous Power Dissipation (T
A
= +85°C)
48-Lead TQFN package
(derate 27.8mW/°C above +85°C).............................1800mW
Storage Temperature Range .............................-55°C to +150°C
Operating Ambient Temperature Range .............-40°C to +85°C
Lead Temperature (soldering, 10s) .................................+400°C
PARAMETER
SYMBOL
CONDITIONS MIN TYP
MAX
UNITS
Supply Current I
CC
Not including LVPECL output current 315 390 mA
RATESEL = low
1244.16
Data Rate
RATESEL = high
622.08
Mbps
RATESEL = low
155.52
Reference Clock Input Frequency
RATESEL = high
77.76
MHz
SDI, RST, REFCLK Differential
Input
V
IN
200
1600
mV
P-P
SDI±, RST±, REFCLK± Input
Current
-180
+180
µA
Rate = 1244Mbps 200
RST Input Rise/Fall Times t
r
, t
f
Rate = 622Mbps 200
ps
SDI±, RST±, REFCLK± Common-
Mode Input
V
CC
- 1.49
V
CC
- V
IN
/4
V
T
A
= 0°C to +85°C (Note 1)
V
CC
- 1.81
V
CC
- 1.62
SDO±, SCLK±, LOCK± Output
Voltage Low
V
OL
T
A
= -40°C to 0°C (Note 1)
V
CC
- 1.83
V
CC
- 1.555
V
T
A
= 0°C to +85°C (Note 1)
V
CC
- 1.025
V
CC
- 0.88
SDO±, SCLK±, LOCK± Output
Voltage High
V
OH
T
A
= -40°C to 0°C (Note 1)
V
CC
- 1.085
V
CC
- 0.88
V
622Mbps (Notes 2, 5, 6) 0.73 0.83
Jitter Tolerance
1244Mbps (Notes 2, 5, 6) 0.73 0.81
UI
P-P
Acquisition Time (Notes 2, 3) 13 Bits
Bit-Error Ratio After acquisition (Notes 2, 4) 10
-10
SDO±, LOCK± Transition Time t
r
, t
f
20% to 80% (Note 1) 265 ps
SCLK± Transition Time t
r
, t
f
20% to 80% (Note 1) 200 ps