ECS-3951M/3953M
SERIES
SMD CLOCK OSCILLATOR
The ECS-3951M (5V) and ECS-3953M (3.3V)
Series are miniature, crystal controlled, low
current clock oscillators in a ceramic SMD
package. Package is seam welded with a
metal lid. The low profile package is ideal
for today’s advanced portable PC and
instrumentation designs.
FEATURES
• 3.3 or 5.0V version
• Low power consumption
• Standby function
• Seam welded package
• Tape & Reel (1,000 pcs)
• PbFree/RoHS Compliant
PART NUMBERING GUIDE
PACKAGE TYPE
ECS-3951M
–
FREQUENCY (50.0 MHz)
500
–
STABILITY TOLERANCE (±50 PPM)
B
Sample Part Number: ECS-3951M-500-B
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS
FREQUENCY RANGE
TEMPERATURE RANGE
SUPPLY VOLTAGE
FREQUENCY STABILITY**
Standard
Option (B)
Option (C)
1.8 ~ 36.0 MHz
36.0 ~ 70.0 MHz
70.0 ~ 100.0 MHz
100.0 ~ 125.0 MHz
@ 1/2 V
CC
Level
1.8 ~ 70.0 MHz
70.0 ~ 125.0 MHz
V
CC
x 0.1V max.
V
CC
x 0.9V min.
HCMOS
1.8 ~ 36.0 MHz
36.0 ~ 70.0 MHz
70.0 ~ 100.0 MHz
VOL=0.5V/0.33
VOL=4.5V/2.97V
Operating
Storage
CONDITIONS
MIN
1.800
-10
-55
+4.5
-100
-50
-25
ECS-3951M (5V)
TYP
MAX
125.0
+70
+125
+5.5
+100
+50
+25
20
55
60
65
60/40
15
5
MIN
1.800
-10
-55
+3.0
–100
-50
-25
ECS-3953M (3.3V)*
TYP
MAX
125.00
+70
+125
+3.3
+3.6
±40
+100
+50
+25
15
25
30
30
50 ±4
60/40
5
5
UNITS
MHz
˚C
˚C
V DC
PPM
PPM
PPM
mA
mA
mA
%
nS
nS
+5.0
±40
INPUT CURRENT
OUTPUT SYMMETRY
RISE AND FALL TIMES
LOGIC “0” LEVEL
LOGIC “1” LEVEL
LOAD
START-UP TIME
(IOL)
OUTPUT CURRENT (IOH)
ENABLE/DISABLE TIME
40/60
50 ±4
40/60
30
5
10
15
4
-4
100
15
5
10
15
4
-4
100
pF
ms
ms
ms
mA
mA
ns
* ECS-3953M is also compatible with a supply voltage of +3.0V DC ±0.3V
** Inclusive of 25˚C tolerance, operating temperature range, input voltage change, load change, aging shock and vibration.
*** An internal pullup resistor from pin 1 to 4 allows active output if pin 1 is left open.
Note: A 0.01 µF bypass capacitor should be placed between VCC (Pin 4) and GND (Pin 2) to minimize power line noise.
PACKAGE DIMENSIONS (mm)
1.40
5.0 max.
2.6
1
4
2
3
2.00
4
3
0.6
1.4
PIN CONNECTIONS
#1
TRI-STATE***
#2
GND
#3
OUTPUT
#4
V
CC
ECS-3951M/3953M Standby Control Voltage
PIN #1 = OPEN***
#3 = OSCILLATION
#3 = OSCILLATION
PIN #1 = +2.2V MIN
#3 = HIGH IMPEDANCE
PIN #1 = 0.8V MAX
4.20
0.01µF
5.08
1
2
1.6
±
0.15
7.5 max.
5.08 max.
Figure 1) ECS-3951M/3953M Top, Side and Bottom views
Figure 2) Land Pattern
ECS, INC. INTERNATIONAL
1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
SMD OSCILLATORS
44
SMD OSCILLATORS
ECS [ ECS, INC. ]
