CLOCK OSCILLATORS
“LPO” series
Product Summary
Package
Code
LPO14
LPO8
Frequency Range
Logic: C M O S
Wave Form: Square wave
MERCURY
Since 1973
Assembly
Technique
Thru-Hole Types
4 pin DIL full size
4 pin DIL half size
Surface Mount Type
Package Size (mm)
[inches]
12.8 x 20.2 x 5.88
[0.504 x 0.795 x 0.231]
12.8 x 12.8 x 5.88
[0.504 x 0.504 x 0.231]
9.6 x 11.4 x 2.5
[0.0.378 x 0.449 x 0.098]
9.6 x 11.4 x 4.7
[0.0.378 x 0.449 x 0.185]
1 Hz ~ 160 kHz
Limited standard
frequencies only
LPO42
LPO44
1 Hz ~ 160 kHz
Limited standard
frequencies only
4 pad leadless
4 pad leadless
LPO (Low Power Oscillator), such as 32.768 KHz, provides time base for real time clocks. Its low current
consumption (only 14 uA for model 3LPO model 7) makes it ideal for battery-operated devices such as data
logging and portable test equipments.
General Specifications
Fosc=32.768 KHz, T
A
=+25°C, Load=10 pF,
Model Code
Input Voltage (V
DD
)
Output Logic
Frequency Range
Calibration Tolerance (at +25°C)
Frequency Stability
vs operating temperature
Current Consumption (10pF load)
Output Voltage HIGH “1”
Output Voltage LOW “0”
Rise and Fall Time (10%↔90%V
DD
)
Start-up voltage
Option on pin 1
Fanout
Duty Cycle
Start-up Time
Storage Temperature
Aging at+25°C
4
7
+3.3 V D.C.
+5.0 V D.C.
+3.3 V D.C.
+5.0 V D.C.
±5%
±10%
±5%
±10%
+3.0V to +15V is also available
+2.0V to +7.0V is also available
CMOS
1 Hz to 160 kHz
20 kHz to 160 kHz
±10 ppm: Tolerance code is “P”;
±25 ppm: Tolerance code is “A”
±50 ppm: Tolerance code is “B”
±100 ppm: Tolerance code is “C”
See chart below.
26 uA typical
45 uA typical
14 uA max.
18 uA max.
Current consumption measured with load
2.97 V min.
4.5 V min.
2.97 V min.
4.0 V min.
0.33 V max.
0.4 V max.
0.33 V max.
0.4 V max.
0.5 u sec typ.; 1 u sec. max.
25 n sec typ.; 45 n sec. max.
+1.90 V D.C.
+1.6 V D.C.
No connection. No option available
Output is high impedance when LOW
2 CMOS gates
50%±5% typical; 50%±10% max.
450 m sec. max.
-50°C to +100°C
5 ppm per year max.
Please contact Mercury Sales Dept. for frequency other than 32.768 kHz.
MERCURY
www.mecxtal.com
Taiwan: TEL (886)-2-2695-7099, FAX (886)-2-2695-7473, e-mail: mectw@mecxtal.com
U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail:
mercury@mecxtal.com
MERCURY
Page 1 of 3
Date: Dec. 1, 2001
Rev. 0
CLOCK OSCILLATORS
“LPO” series
Logic: C M O S
Wave Form: Square wave
MERCURY
Since 1973
For kHz range clock oscillators with ±25, ±50 or ±100 ppm frequency stability and current consumption in the
mA (milli amps) range, please refer to the “H” series.
Part Number Format and Example
Voltage code
3 or 5 etc
Example:
Package Code
LPO14 or LPO8
Frequency Tolerance
Code: P, A, B or C
Model Code
4 or 7
“K”
suffix for kHz
“H” suffix for Hertz
Pin 1 option
“T” or blank
Frequency
5LPO14-C4-32.768K
represents +5.0V, LPO 32.768 kHz model 4, full size 4 pin DIP, ±100 ppm calibration
tolerance.
Current Consumption (Icc) vs Supply Voltage
(V
DD
).
Measured with 10 pF load
Typical Frequency Stability vs Temperature Curve
(Referenced to +25°C)
LPO 32.768 kHz model 4 and model 7
0.0
-20.0
Freq. deviation in ppm
-40.0
-60.0
-80.0
-100.0
-120.0
-140.0
-160.0
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
Temperature (°C)
LPO 32.768 kHz model 4
180
160
140
120
100
80
60
40
20
0
2
3
4
5
6
7
8
9
Vdd (volts)
10
+25°C
Icc (uA)
Output Wave Form
Tr
V
OH
Tf
CMOS
90%V
DD
50%V
DD
V
OL
T
H
T
Duty Cycle = (T
H
/ T)x100%
10%V
DD
LPO 32.768 kHz model 7
30
25
20
Icc (uA)
15
10
5
0
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
Vdd (volts)
MERCURY
Page 2 of 3
Date: Dec. 1, 2001
Rev. 0
Embedded System
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