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11
SYNC25104HR/
SYNC35104HR
User’s Manual
2
Specifications
2.1
Operating Conditions
Table 3: Operating Conditions
Symbol
Parameter
Test Condition
Min
Max
Unit
V
cc5
5V Supply Voltage
4.75
5.25 V
V
cc3
3.3V Supply Voltage
n/a
n/a V
V
cc12
12V Supply Voltage
n/a
n/a V
T
a
Operating Temperature
-40
+85 C
T
s
Storage Temperature
-55
+125 C
RH
Relative Humidity
Non-Condensing
0
90% %
MTBF
Mean Time Before Failure
Telcordia Issue 2
30°C, Ground benign, controlled
TBD Hours
2.2
Electrical Characteristics
Table 4: Electrical Characteristics
Symbol
Parameter
Test Condition
Min
Typical
Max
Unit
P
Power Consumption
V
cc5
= 5.0V
TBD
W
I
cc5
5V Input Supply Current
Active
TBD
A
CN5: SyncBus (M-LVDS)
f
max
Maximum operating frequency
125
MHz
C
A
, C
B
Transceiver IO capacitance
7.8
pF
C
AB
Transceiver IO differential
capacitance
3
pF
Driver mode
V
OUT_D
Differential output voltage
R
L
=50Ω, C
L
=5pF
480
650 mV
p-p
V
OUT_CM
Common-mode output voltage
R
L
=50Ω, C
L
=5pF
0.3
1.6
2.1 V
Receiver mode
V
IT+
Positive-going differential input
voltage threshold
16
50 mV
V
IT-
Negative-going differential input
voltage threshold
-50
20
mV
CN6: Any frequency output (Differential)
V
OUT_D
Differential output voltage
LVDS
700
900
1060 mV
p-p
V
OUT_D
Differential output voltage
LVPECL
1260
1560
1900 mV
p-p
V
OUT_CM
Common-mode output voltage
LVDS
1.1
1.2
1.3 V
V
OUT_CM
Common-mode output voltage
LVPECL
1.9
2
2.1 V
R
OUT
Differential output impedance
100
Ω
t
RISE
/t
FALL
Output rise and fall time
f
out
>100MHz, 20 to 80%
0.1
0.2 ns
CN7: GPS antenna input
V
ANT
Antenna bias voltage
I
ANT
=0
3.3
V
I
ANT
Antenna bias current
50 mA
NF
Receiver noise figure
GPS band
2.6
dB
CN8: Time mark input
V
IH
Input high voltage
2.3
3.3 V
V
IL
Input low voltage
0
0.66 V
CN9: 1PPS output (LVCMOS 3.3V)
V
OH
Output high voltage
I
OH
=1mA
2.8
V
V
OL
Output low voltage
I
OL
=1mA
0.2 V
R
OUT
Output impedance
50
Ω
t
RISE
/t
FALL
Output rise and fall time
C
L
=5pF
0.35
0.7 ns
V
(ESD)
Electrostatic discharge
HBM ANSI/ESDA/JEDEC
JS-001
±6000 V
V
(ESD)
Electrostatic discharge
CBM JESD22-C101
±1500 V
CN10, CN11: Any frequency output (LVCMOS 3.3V)
V
OH
Output high voltage
2.8
V