ECS-3951C/3953C
SERIES
SMD CLOCK OSCILLATOR
The ECS-3951C (5V) and ECS-3953C (3.3V)
Series are miniature, crystal controlled, low
current clock oscillator in a ceramic SMD
package. The low profile package is ideal
for today’s advanced portable PC and
instrumentation designs.
FEATURES
• 3.3 or 5.0V version
• Miniature profile
• Low power consumption
• Tape & Reel (1,000 pcs.)
• RoHS Compliant (Note 7 Exemption)
PART NUMBERING GUIDE
ECS-3951C
–
FREQUENCY (50.0 MHz)
500
–
STABILITY TOLERANCE (±50 PPM)
B
Sample Part Number: ECS-3951C-500-B
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS
FREQUENCY RANGE
TEMPERATURE RANGE
SUPPLY VOLTAGE
FREQUENCY STABILITY**
Standard
Option (B)
Option (C)
1.8 ~ 30.0 MHz
30.0 ~ 35.0 MHz
35.0 ~ 50.0 MHz
50.0 ~ 66.0 MHz
66.0 ~ 80.0 MHz
@ 1/2 V
CC
Level
V
CC
x 0.1V max.
V
CC
x 0.9V min.
HCMOS
1.8 ~ 36.0 MHz
36.0 ~ 80.0 MHz
VOL=0.5V/0.33
VOH=4.5V/2.97V
Operating
Storage
CONDITIONS
MIN
1.800
0
-55
+4.5
-100
-50
-25
ECS-3951C (5V)
TYP
MAX
80.000
+70
+125
+5.5
+100
+50
+25
10
15
30
30
50
60/40
10
MIN
1.800
0
-55
+3.0
–100
-50
-25
ECS-3953C (3.3V)*
TYP
MAX
80.000
+70
+125
+3.6
+100
+50
+25
8
8
12
15
30
60/40
15
UNITS
MHz
˚C
˚C
V DC
PPM
PPM
PPM
mA
mA
mA
mA
mA
%
ns
+5.0
±40
+3.3
±40
INPUT CURRENT
OUTPUT SYMMETRY
RISE AND FALL TIMES
LOGIC “0” LEVEL
LOGIC “1” LEVEL
LOAD
START-UP TIME
OUTPUT CURRENT
(IOL)
(IOH)
40/60
50 ±4
40/60
50 ±4
ENABLE/DISABLE TIME
* ECS-3953C 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.
15
5
10
4
-4
100
15
5
10
4
-4
100
pF
ms
ms
mA
mA
ns
PACKAGE DIMENSIONS (mm)
0.10
PIN CONNECTIONS
#1
TRI-STATE***
#2
GND
#3
OUTPUT
#4
V
CC
2.00
4
5.08
1.60
±0.15
3
1
2
1.40
1.40
5.00
±0.2
0.01µF
5.08
ECS-3951C/3953C Standby Control Voltage
PIN #1 = OPEN ***
#3 = OSCILLATION
#3 = OSCILLATION
PIN #1 = V
CC
x0.9 MIN
PIN #1 = V
CC
x0.1 MAX
#3 = HIGH IMPEDANCE
2.54
7.5
±0.2
1
2
4
3
1.00
4.20
Figure 1) ECS-3951C/3953C 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
42
SMD OSCILLATORS
ECS [ ECS, INC. ]
