Document No. 008-0284-0 Page 1 - 4 Rev. D
٠ ٠ ٠ CTS Electronic Components, Inc. ٠ 171 Covington Drive ٠ Bloomingdale, IL 60108 ٠ ٠ ٠
٠ ٠ ٠ www.ctscorp.com ٠ ٠ ٠
Model 635
LVPECL or LVDS CLOCK OSCILLATOR
FEATURES
• Standard 7.5x5.0mm Surface Mount Footprint
• Differential LVPECL or LVDS Output
• Fundamental or Overtone Crystal
• Low Phase Jitter
• Frequency Range 19.44 – 250 MHz
• Frequency Stability, ±50 ppm Standard
(±20 ppm, ±25 ppm and ±100 ppm available)
• +2.5Vdc or +3.3Vdc Operation
• Operating Temperature to –40°C to +85°C
• Output Enable Standard
• Tape & Reel Packaging
• RoHS/Green Compliant (6/6)
ORDERING INFORMATION
* - Not available with 'I' temperature range. Consult factory for availability before ordering.
635
OUTPUT TYPE FREQUENCY IN MHz
M - indicates MHz and decimal point.
Frequency is recorded with minimum 4
significant digits to the right of the "M".
M
OPERA T IN G TEMPERA T URE RANGE
C = -20°C to +70°C (standard)
I = -40°C to +85°C
P = PECL,
Pin 1 Enable Pin 2 N.C.
(standard)
L = LVDS,
Pin 1 Enable Pin 2 N.C.
(standard)
E = PECL,
Pin 2 Enable Pin 1 N.C.
V = LVDS,
Pin 2 Enable Pin 1 N.C.
FREQUENCY STABILITY SUPPLY VOLTAGE
2 = 2.5 Vdc
3 = 3.3 Vdc
6 = ± 20 ppm *
5 = ± 25 ppm
3 = ± 50 ppm (standard)
2 = ± 100 ppm
(over -40°C to 85°C only)
Example Part Number: 635P3C3155M5200
DESCRIPTION
The Model 635 is a ceramic packaged Clock
oscillator offering reduced size and enhanced
stability. The small size means it is perfect for
any application. The enhanced stability means it
is the perfect choice for today’s communications
applications that require tight frequency control.
Document No. 008-0284-0 Page 2 - 4 Rev. D
٠ ٠ ٠ CTS Electronic Components, Inc. ٠ 171 Covington Drive ٠ Bloomingdale, IL 60108 ٠ ٠ ٠
Model 635
7.5x5.0mm Low Cost
LVPECL or LVDS Clock Oscillator
ELECTRICAL CHARACTERISTICS
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT
Maximum Su
pp
l
y
Volta
g
e
V
CC
- -0.5 - 5.0
V
Stora
g
e Tem
p
erature T
STG
- -55 - 125 °C
Fre
q
uenc
y
Ran
g
e
(
See Note 1
)
LVPECL and LVDS 19.44 - 250
Frequency Stability
(See Note 2 and Ordering Information)
∆f/f
O
---
20, 25, 50
or 100 ± ppm
O
p
eratin
g
Tem
p
erature
Commercial -20 70
Industrial -40 85
2.38 2.5 2.63
3.14 3.3 3.47
Su
pp
l
y
Current
LVPECL -50 100
LVDS -25 60
Start U
p
Time T
S
Application of V
CC
-35ms
Phase Jitter t
j
rms Bandwidth 12 kHz - 20 MHz - - 1
p
s RMS
Period Jitter
pj
rms - - - 5
p
s RMS
Enable Function Standb
y
Enable In
p
ut Volta
g
e
V
IH
Pin 1 or Pin 2 Lo
g
ic '1'
,
Out
p
ut Enabled 0.7*V
CC
--
V
Disable In
p
ut Volta
g
e
V
IL
Pin 1 or Pin 2 Lo
g
ic '0'
,
Out
p
ut Disabled - - 0.3*V
CC
Disable Current I
IL
Pin 1 or Pin 2 Lo
g
ic '1'
,
Out
p
ut Disabled - - 20 uA
Enable Time T
PLZ
Pin 1 or Pin 2 Lo
g
ic '1' --5ns
LVPECL WAVEFORM
Out
p
ut Load R
L
--50-Ohms
Out
p
ut Dut
y
C
y
cle SYM @ V
CC
- 1.3V 45 - 55 %
Out
p
ut Volta
g
e Levels
Lo
g
ic '1' Level
V
OH
PECL Load
V
CC
- 1.025V --
Lo
g
ic '0' Level
V
OL
PECL Load - -
V
CC
- 1.62V
Rise and Fall Time
f
O
< 100 MHz -0.81.0
f
O
> 100 MHz -0.50.6
LVDS WAVEFORM
Out
p
ut Load R
L
Between Out
p
uts - 100 - Ohms
Out
p
ut Dut
y
C
y
cle SYM @ 1.25V 45 - 55 %
Differential Out
p
ut Volta
g
e
V
OD
RL = 100 Ohms 247 350 454 mV
Differential Out
p
ut Error - - - - 50 mV
Offset Volta
g
e
V
OS
LVDS Load 1.125 1.25 1.375
V
Offset Error - - - - 50 mV
Out
p
ut Volta
g
e Levels
Lo
g
ic '1' Level
V
OH
LVDS Load - 1.43 1.6
Lo
g
ic '0' Level
V
OL
LVDS Load 0.9 1.1 -
Rise and Fall Time
f
O
< 100 MHz -0.81.0
f
O
> 100 MHz -0.50.6
Notes:
1.
2.
Absolute Maximums
f
O
-MHz
T
A
-°C
25
Electrical and Waveform Parameters
@ 20% - 80% Levels
mA
V
V
For frequencies above 160 MHz consult factory for availability.
T
R
, T
F
@ 20% - 80% Levels ns
Inclusive of initial tolerance at time of shipment, changes in supply voltage, load, temperature and 10 year aging.
V
CC
± 5 %
T
R
, T
F
Maximum Load
ns
Supply Voltage
I
CC
V
PECL/LVDS OUTPUT WAVEFORM
Tr Tf
UPTIME (t)
PERIOD (T)
80%
50%
20%
DUTY CYCLE = t/T x 100 (%)
OUT
OUT
OHV
OLV
VOS
ENABLE TRUTH TABLE
PIN 1 or PIN 2 PIN 4 / PIN 5
Logic ‘1’ Output
Open Output
Logic ‘0’ High Imp.
Document No. 008-0284-0 Page 3 - 4 Rev. D
٠ ٠ ٠ CTS Electronic Components, Inc. ٠ 171 Covington Drive ٠ Bloomingdale, IL 60108 ٠ ٠ ٠
Model 635
7.5x5.0mm Low Cost
LVPECL or LVDS Clock Oscillator
MECHANICAL SPECIFICATIONS
PACKAGE DRAWING MARKING INFORMATION
0.303 MAX
(7.7)
0.100
(2.54)
5
2
(2.0) MAX
(5.08)
0.200
0.055
0.079
(5.0 ±0.2)
0.197 ±0.008
(1.4)
0.147
(3.73)
Key: (mm)
Inch
3
46
PIN 1 IDENTIFIER
0.050
(1.27)
1
SUGGESTED SOLDER PAD GEOMETRY
.165 [4.20]
.071 [1.80]
Key: [mm]
Inch
13
46
CBYPASS
2
5
.200
[
5.08
]
.100 [2.54]
.079 [2.00]
D.U.T. PIN ASSIGNMENTS
PIN SYMBOL DESCRIPTION
1 EOH or N.C. Enable (std) or optional No Connect
2 EOH or N.C. No Connect (std) or optional Enable
3 GND Circuit & Package Ground
4 Output RF Output
5 Output Complimentary RF Output
6 VCC Supply Voltage
1. ** - Manufacturing Site Code.
2. YYWW – Date code, YY – year, WW – week.
3. Truncated CTS part number.
4. XXXMXXXX - Frequency marked with 4
significant digits after the ‘M’.
NOTES
1. Termination pads (e4), barrier-plating is nickel
(Ni) with gold (Au) flash plate.
2. Reflow conditions per JEDEC J-STD-020.
CTS ** YYWW
635P3C3
● XXXMXXXX
TEST CIRCUIT, PECL LOAD TEST CIRCUIT, LVDS LOAD
Enable Input or N.C.
0.01uF
SUPPLY
POWER
-
+
+
+
-
VM
-
mA
N.C. or Enable Input
(Thevenin Equivalent)
(Thevenin Equivalent)
3
4
12
D.U.T.
65
Vcc - 2.0V
50
RL
50
RL
Vcc - 2.0V
CH1
CH2
POWER
SUPPLY
+
-
+-
-
+
VM
mA
0.01uF
D.U.T.
64
12
N.C. or Enable Input
3
5
CH1
CH2
100
RL
Enable Input or N.C.
Document No. 008-0284-0 Page 4 - 4 Rev. D
٠ ٠ ٠ CTS Electronic Components, Inc. ٠ 171 Covington Drive ٠ Bloomingdale, IL 60108 ٠ ٠ ٠
Model 635
7.5x5.0mm Low Cost
LVPECL or LVDS Clock Oscillator
QUALITY AND RELIABILITY
Quality systems meet or exceed the requirements of ISO 9000:2000 standards.
TAPE AND REEL INFORMATION
DIMENSIONS IN MILLIMETERS
DIRECTION OF FEED
5.40
7.90
8.40
5.70
16.0
8.04.0 Ø1.50 1.75
2.10
2.40
Ø23
Ø180
Ø60
Ø13
120°
17.5 2.0
Device quantity is 1,000 pieces per 180mm reel.
ENVIRONMENTAL SPECIFICATIONS
Temperature Cycle: 400 cycles from –55°C to +125°C, 10 minute dwell at each temperature, 1
minute transfer time between temperatures.
Mechanical Shock: 1,500g’s, 0.5mS duration, ½ sinewave, 3 shocks each direction along 3
mutually perpendicular planes (18 total shocks).
Sinusoidal Vibration: 0.06 inches double amplitude, 10 to 55 Hz and 20g’s, 55 to 2,000 Hz, 3 cycles
each in 3 mutually perpendicular planes (9 times total).
Gross Leak: No leak shall appear while immersed in an FC40 or equivalent liquid at
+125°C for 20 seconds.
Fine Leak: Mass spectrometer leak rates less than 2x10-8 ATM cc/sec air equivalent.
Resistance to Solder Heat: Product must survive 3 reflows of +260°C peak, 10 seconds maximum.
High Temperature Operating Bias: 2,000 hours at +125°C, maximum bias, disregarding frequency shift.
Frequency Aging: 1,000 hours at +85°C, full bias, less than ±5 ppm shift.
Moisture Sensitivity Level: Level 1 per JEDEC J-STD-020.
