ECS 3955M Data Sheet
ECS-3955M
SERIES
The ECS-3955M (5V) ia a high capacitive load
version of our minature, crystal controlled,
low current clock oscillator in an all ceramic
SMD package. The low profile package is
ideal for PC’s, portable applications and
PCMCIA cards.
SMD CLOCK OSCILLATOR
FEATURES
• High capacitive load options
• Low power consumption
• Tri-State Function
• Seam welded package
• Tape & Reel (1,000 pcs STD)
PART NUMBERING GUIDE
PACKAGE TYPE FREQUENCY (50.0 MHz) STABILITY TOLERANCE (B=±50 PPM)
ECS-3955M – 500 – B
Sample Part Number: ECS-3955M-500-B
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS
FREQUENCY RANGE 1.800 70.0 MHz
TEMPERATURE RANGE
SUPPLY VOLTAGE +4.5 +5.0 +5.5 V DC
FREQUENCY STABILITY*
INPUT CURRENT
OUTPUT SYMMETRY @ 1/2 VCC Level 40/60 50 ±4 60/40 %
RISE AND FALL TIMES
OUTPUT VOLTAGE
LOAD HCMOS 50 pF
START-UP TIME
OUTPUT CURRENT
ENABLE/DISABLE TIME 100 ns
* 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.
Storage -55˚ +125 ˚C
36.1 ~ 70.0 MHz 65 mA
7 ns
VOH V
36.0 ~ 70.0 MHz 10 ms
(IOL)
(IOL)
(IOH)
VOH -16 mA
Operating -10 +70 ˚C
Standard ±100 PPM
Option (B) ±50 PPM
VOL V
1.8 ~ 36.0 MHz 5 ms
VOL 16 mA
CONDITIONS
Option (C) ±25 PPM
1.8 ~ 36.0 MHz 30 mA
MIN TYP MAX
ECS-3955M (5V)
x 0.9V V DC
CC
CC
x 0.1V V DC
UNITS
PACKAGE DIMENSIONS (mm)
4
1
7.5 max.
3
5.0 max.
2
1.6 ± 0.15
Figure 1) ECS-3955M Series Top, Side and Bottom Views
0.6 1.4
1
4
5.08 max.
2
2.6
3
1.40
4.20
5.08
Figure 2) Land Pattern
2.00
0.01µF
PIN CONNECTIONS
#1 TRI-STATE**
#2 GND
#3 OUTPUT
#4 V
ECS-3955M Standby Control Voltage
PIN #1 = OPEN
PIN #1 = +2.2V MIN
PIN #1 = 0.8V MAX
CC
#3 = OSCILLATION
#3 = OSCILLATION
#3 = HIGH IMPEDANCE
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
SMD OSCILLATORS SMD OSCILLATORS
45
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