ECS 3951C, 3953C Data Sheet

 3.3 or 5.0V version
 5 x 7 mm Footprint
 Low power consumption
 RoHS Compliant

(Note 7 Exemption)

OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS

PARAMETERS CONDITIONS

Frequency Range

Operating Temperature

Storage Temperature

Supply Voltage

Frequency Stability *

Input Current

Output Symmetry

Rise and Fall Times

"0" level
"1" level

Output Load

Startup time

Output Current

Enable/Disable Time

Standard

Extended (N Option)

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

ECS-3951C (+5V) ECS-3953C (+3.3V)

MIN MINTYP TYPMAX MAX

0

-40

-55

+4.5

90% * Vcc 90% VDD90% VDD

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.

UNITS

80.000
+70
+85

+125

+5.0

+5.5

± 100

± 50
± 25

40/60

10% * Vcc 10% * Vcc

100

1.0001.000
0

-40

-55

+3.0

10
15
30
30
50

10

90% * Vcc

15

5

10

4

-4

+3.3

125.000
+70
+85

+125

+3.6

± 100

± 50
± 25

8

8
12
15
30

40/60

15

15

5
10

4

-4

150

MHz

°C
°C

°C
VDC
ppm
ppm
ppm

mA
mA
mA
mA

%
%

ns
VDC
VDC

pF

ms

ms
mA
mA

ns

DIMENSIONS (mm)

Figure 1) Top, Side and Bottom views Figure 2) Suggested Land Pattern

PART NUMBERING GUIDE: Example ECS-3953C-500-B

ECS - Series - Frequency Abbreviation - Stability Temperature

3951C = +5.0V

3953C = +3.3V

500 = 50.000 MHz

See Frequency

Abbreviations

Blank = ± 100 ppm
B = ± 50 ppm
C = ± 25 ppm

Blank = 0 ~ +70°C
M = -20 ~ +70°C
N = -40 ~ +85°C

Pin Connections

Pin #1
Pin #2
Pin #3
Pin #4

Tri-State Control Voltage

Pad 1

Open

Vcc x 0.9 Min.

Vcc x 0.1 Max.

* 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.

ECS-3953C is also compatible with a supply
voltage of +3.0V DC ±0.3V

Tri-State **

Ground

Output

Vcc

Pad 3
Oscillation
Oscillation

No Oscillation

1105 South Ridgeview Road z Olathe, KS 66062 z Phone: [phone] z Fax: [phone] z www.ecsxtal.com