S1903 and S1950 Series
3.3V and 5V ACMOS/TTL, High Frequency
Crystal Clock Oscillator (XO)
Actual Size = 5 x 7mm
Product Features
• 3.3V or 5V ACMOS/TTL compatible logic levels
• Very tight frequency stability available
• Fast clock edge rate
• Pin-compatible with standard 5x7mm packages
• Designed for standard reflow and washing
techniques
• Pb-free and RoHS/Green compliant
Packaging Outline
1.8
Max
.071
Pin Functions
Pin
Function
1
2
3
4
OE Function
Ground
Clock Output
V
DD
7.0±0.2
.276±.008
1
2
Product Description
The S19xx Series is a 3.3V or 5V crystal clock oscillator
that achieves superb stability and fast rise/fall edges
over a broad range of operating conditions and
frequencies. The output clock signal, generated
internally with a PLL oscillator design, is compatible
with ACMOS/TTL logic levels. The device, available
on tape and reel, is contained in a 5x7mm surface-
mount ceramic package.
4
3
5.0±0.2
.179±.008
Common Frequencies
Contact SaRonix for additional frequencies
Applications
The S19xx Series is an ideal reference clock for high-
speed applications requiring tight stability, including:
• T1 / E1 line cards
• T3 / E3 line cards
• Network processors
• Industrial controls
32.7680 MHz
35.3280 MHz
38.8800 MHz
40.0000 MHz
44.7360 MHz
45.0000 MHz
48.0000 MHz
49.1520 MHz
54.0000 MHz
60.0000 MHz
61.4400 MHz
66.0000 MHz
76.8000 MHz
77.7600 MHz
80.0000 MHz
90.0000 MHz
98.3040 MHz
108.0000 MHz
120.0000 MHz
122.8800 MHz
Ordering Information
½½½½½½½
½½½½½½½½½½½½½½
½½½½½½½½½½½
½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½
½
½½½½ ½
½½½½½½½½½½½½½½½
½½½½½½½½½
½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
1
All specifications are subject to change without notice.
DS 187 Rev G | 08/11/05
S1903 and S1950 Series
3.3V and 5V ACMOS/TTL, High Frequency
Crystal Clock Oscillator (XO)
Electrical Performance
Parameter
Min.
Typ.
Max.
Units
Notes
Output frequency (S1903)
Output frequency (S1950)
Supply voltage (S1903)
Supply voltage (S1950)
Supply current (S1903)
Supply current (S1950)
Frequency stability
Operating temperature
Output logic 0, VOL (S1903)
Output logic 0, VOL (S1950)
Output logic 1, VOH
Output load (S1903)
Output load (S1950)
Duty cycle (S1903)
Duty cycle (S1950)
Duty cycle (S1950)
Rise and fall time
Jitter, total
Jitter, total
Jitter, total
32
80
+2.97
+4.75
+3.3
+5.0
35
125
125
+3.63
+5.25
35
50
±20 to
±50
MHz
MHz
V
V
mA
mA
ppM
°C
V
V
V
As specified
As specified
See Note 1 below
As specified
-40
+85
20%
V
DD
10%
V
DD
80%
V
DD
95
50
45
40
45
55
60
55
2
80
120
150
Ω
Ω
%
%
%
ns
ps
pk-pk
ps
pk-pk
ps
pk-pk
AC (ACMOS)
AC (ACMOS)
-40 to +85°C measured 50%VDD
-40 to +85°C measured 50%VDD or 1.5V
0 to +70°C measured 50%VDD
measured 20/80% of waveform
up to 72 MHz
>72 MHz 0 to 70°C
>72 MHz -40 to +85°C
Notes:
1. As specified. Stability includes all combinations of operating temperature, load changes, rated input (supply) voltage changes, initial calibration
tolerance (25°C), aging (1 year at 25°C average effective ambient temperature), shock and vibration.
Output Enable / Disable Function
Parameter
Min.
Typ.
Max.
Units
Notes
Input Voltage (pin 1), Output
Enable
Input voltage (pin 1), Output
Disable
Internal pullup resistance
Output disable delay
Output enable delay
2.2
0.8
50
100
100
V
V
kΩ
ns
ns
or open
Output is Hi-Z
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
2
All specifications are subject to change without notice.
DS 187 Rev G | 08/11/05
S1903 and S1950 Series
3.3V and 5V ACMOS/TTL, High Frequency
Crystal Clock Oscillator (XO)
Typical Phase Noise
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
3
All specifications are subject to change without notice.
DS 187 Rev G | 08/11/05
S1903 and S1950 Series
3.3V and 5V ACMOS/TTL, High Frequency
Crystal Clock Oscillator (XO)
Absolute Maximum Ratings
Parameter
Min.
Typ.
Max.
Units
Notes
Storage temperature
Supply Voltage
-55
+125
+7
°C
V
Test Circuit
½½½½½½½½½½
½
½½½½½
½½
½½½½½½
½
½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½
½
½½½½½
½½½½½½
½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
Reliability Test Ratings
This product is rated to meet the following test conditions:
Type
Parameter
Test Condition
Mechanical
Mechanical
Mechanical
Mechanical
Mechanical
Mechanical
Environmental
Environmental
Environmental
Environmental
Shock
Solderability
Terminal strength
Gross leak
Fine leak
Solvent resistance
Thermal shock
Moisture resistance
Vibration
Resistance to soldering heat
MIL-STD-883, Method 2002, Condition B
JESD22-B102-D Method 2 (Preconditioning E)
MIL-STD-883, Method 2004, Condition D
MIL-STD-883, Method 1014, Condition C
MIL-STD-883, Method 1014, Condition A2 (R
1
= 2x10
-8
atm cc/s)
MIL-STD-202, Method 215
MIL-STD-883, Method 1011, Condition A
MIL-STD-883, Method 1004
MIL-STD-883, Method 2007, Condition A
J-STD-020C Table 5-2 Pb-free devices (2 cycles max)
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
4
All specifications are subject to change without notice.
DS 187 Rev G | 08/11/05
S1903 and S1950 Series
3.3V and 5V ACMOS/TTL, High Frequency
Crystal Clock Oscillator (XO)
Output Waveform
t
f
t
r
VOH
80%
50%
20%
VOL
t
A
Duty cycle = 100%
x
(t
A
)
/
(t
A
+ t
B
)
t
B
Reflow Soldering Profile
As per IPC/JEDEC J-STD-020C
260
217
1 to 3°C/sec max
Peak 260°C for 10 sec max
1 to 3°C/sec
Temperature – °C
Time
60 to 90 sec
4 to 6 minutes max
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
5
All specifications are subject to change without notice.
DS 187 Rev G | 08/11/05
