3.3 or 5.0V version
5 x 7 mm Footprint
Low power consumption
RoHS Compliant
(Note 7 Exemption)
ECS-3951C/3953C
SMD CLOCK OSCILLATOR
ECS-3951C (5V) and ECS-3953C (3.3V) miniature SMD
crystal controlled, low current clock oscillator in a ceramic
SMD package.
OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS
PARAMETERS
Frequency Range
Operating Temperature
Storage Temperature
Supply Voltage
Frequency Stability *
Standard
Option B
Option C
1.8 to 30.0 MHz
30.1 to 35.0 MHz
35.1 to 50.0 MHz
50.1 to 66.0 MHz
66.1 to 80.0 MHz
@ 50% VDD level
10% VDD to 90% level
VOL
VOH
HCMOS
1.8 to 36.0 MHz
36.1 to 80.0 MHz
VOL=0.5V/0.33V
VOL=4.5V/2.97V
Standard
Extended (N Option)
CONDITIONS
ECS-3951C (+5V)
ECS-3953C (+3.3V)
MIN
1.000
0
-40
-55
+4.5
TYP
MAX
80.000
+70
+85
+125
+5.5
– 100
– 50
– 25
10
15
30
30
50
40/60
10
10% * Vcc
MIN
1.000
0
-40
-55
+3.0
TYP
MAX
125.000
+70
+85
+125
+3.6
– 100
– 50
– 25
8
8
12
15
30
40/60
15
10% * Vcc
UNITS
MHz
C
C
C
VDC
ppm
ppm
ppm
mA
mA
mA
mA
%
%
ns
VDC
VDC
pF
ms
ms
mA
mA
ns
+5.0
+3.3
Input Current
Output Symmetry
Rise and Fall Times
"0" level
"1" level
Output Load
Startup time
Output Current
Enable/Disable Time
90% * Vcc
90% * Vcc
90% VDD
15
5
10
4
-4
100
15
5
10
4
-4
150
DIMENSIONS (mm)
Pin Connections
Pin #1
Pin #2
Pin #3
Pin #4
Tri-State **
Ground
Output
Vcc
Tri-State Control Voltage
Pad 1
Open
Vcc x 0.9 Min.
Vcc x 0.1 Max.
Figure 1) Top, Side and Bottom views
Figure 2) Suggested Land Pattern
Pad 3
Oscillation
Oscillation
No Oscillation
* Note: Inclusive of 25°C tolerance, operating
temperature,input voltage change, load change,
shock and vibration.
** Note: Internal pullup resistor from pin 1 to 4
allows active output if pin 1 is left open.
PART NUMBERING GUIDE: Example ECS-3953C-500-B
ECS
-
Series
3951C = +5.0V
3953C = +3.3V
-
Frequency Abbreviation
500 = 50.000 MHz
See Frequency
Abbreviations
-
S
tability
Temperature
Blank = 0 ~ +70C
M = -20 ~ +70C
N = -40 ~ +85C
Blank = – 100 ppm
B = – 50 ppm
C = – 25 ppm
ECS-3953C is also compatible with a supply
voltage of +3.0V DC ±0.3V
1105 South Ridgeview Road
Olathe, KS 66062
Phone: 913.782.7787
Fax: 913.782.6991
www.ecsxtal.com
