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 CONDITIONS FREQUENCY RANGE Operating Storage TEMPERATURE RANGE SUPPLY VOLTAGE 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 VCC Level 1.8 ~ 70.0 MHz 70.0 ~ 125.0 MHz VCC x 0.1V max. VCC 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 FREQUENCY STABILITY** 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 MIN 1.800 -10 -55 +4.5 -100 -50 -25 40/60 ECS-3951M (5V) TYP MAX 125.0 +70 +125 +5.5 +100 +50 +25 20 55 60 65 60/40 15 5 +5.0 ±40 50 ±4 MIN 1.800 -10 -55 +3.0 –100 -50 -25 40/60 30 5 10 15 4 -4 100 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 15 5 10 15 4 -4 100 UNITS MHz ˚C ˚C V DC PPM PPM PPM mA mA mA % nS nS 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. PIN CONNECTIONS #1 TRI-STATE*** #2 GND #3 OUTPUT #4 VCC PACKAGE DIMENSIONS (mm) 0.6 3 1.4 2.00 4 2 4 3 4.20 1 2.6 5.0 max. 1.40 0.01µF 7.5 max. 1.6 ± 0.15 2 1 5.08 max. 5.08 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 Figure 2) Land Pattern Figure 1) ECS-3951M/3953M Top, Side and Bottom views 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