ECS-3955M
SERIES
SMD CLOCK OSCILLATOR
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.
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
ECS-3955M
–
FREQUENCY (50.0 MHz)
500
–
STABILITY TOLERANCE (B=±50 PPM)
B
Sample Part Number: ECS-3955M-500-B
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS
FREQUENCY RANGE
TEMPERATURE RANGE
SUPPLY VOLTAGE
FREQUENCY STABILITY*
INPUT CURRENT
OUTPUT SYMMETRY
RISE AND FALL TIMES
OUTPUT VOLTAGE
LOAD
START-UP TIME
OUTPUT CURRENT
(IOL) (IOL)
(IOH)
ENABLE/DISABLE TIME
Standard
Option (B)
Option (C)
1.8 ~ 36.0 MHz
36.1 ~ 70.0 MHz
@ 1/2 V
CC
Level
VOL
VOH
HCMOS
1.8 ~ 36.0 MHz
36.0 ~ 70.0 MHz
VOL
VOH
Operating
Storage
CONDITIONS
MIN
1.800
-10
-55˚
+4.5
ECS-3955M (5V)
TYP
MAX
70.0
+70
+125
+5.5
±100
±50
±25
30
65
60/40
ns
V
CC
x 0.1V
50
5
10
16
-16
ns
UNITS
MHz
˚C
˚C
V DC
PPM
PPM
PPM
mA
mA
%
V DC
V DC
pF
ms
ms
mA
mA
+5.0
40/60
50 ±4
7
V
CC
x 0.9V
100
* 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)
4
3
0.6
1.4
1.40
5.0 max.
4
3
2.6
1
2
PIN CONNECTIONS
#1
TRI-STATE**
#2
GND
#3
OUTPUT
#4
V
CC
ECS-3955M 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
2.00
1
2
0.01µF
5.08
1.6
±
0.15
7.5 max.
5.08 max.
Figure 1) ECS-3955M Series 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
45
SMD OSCILLATORS
ECS [ ECS, INC. ]
