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 • Standby function • Tape & Reel (1,000 pcs) 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 CONDITIONS FREQUENCY RANGE Operating Storage TEMPERATURE RANGE SUPPLY VOLTAGE 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 FREQUENCY STABILITY** INPUT CURRENT OUTPUT SYMMETRY RISE AND FALL TIMES LOGIC “0” LEVEL LOGIC “1” LEVEL LOAD START-UP TIME OUTPUT CURRENT (IOL) (IOH) ECS-3951C (5V) TYP MIN 1.800 0 -55 +4.5 -100 -50 -25 MAX 80.000 +70 +125 +5.5 +100 +50 +25 10 15 30 30 50 60/40 10 +5.0 ±40 40/60 50 ±4 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 MIN 1.800 0 -55 +3.0 –100 -50 -25 40/60 15 5 10 4 -4 100 ENABLE/DISABLE TIME 2.54 2.00 0.10 4.20 0.01µF 3 4 2 1.40 2 1 5.00 ±0.2 7.5 ±0.2 1 1.40 1.60 ±0.15 3 50 ±4 UNITS MHz ˚C ˚C V DC PPM PPM PPM mA mA mA mA mA % ns pF ms ms mA mA ns PIN CONNECTIONS #1 TRI-STATE*** #2 GND #3 OUTPUT #4 V CC PACKAGE DIMENSIONS (mm) 5.08 +3.3 ±40 MAX 80.000 +70 +125 +3.6 +100 +50 +25 8 8 12 15 30 60/40 15 15 5 10 4 -4 100 * 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. 4 ECS-3953C (3.3V)* TYP ECS-3951C/3953C Standby Control Voltage PIN #1 = OPEN *** #3 = OSCILLATION #3 = OSCILLATION PIN #1 = V CCx0.9 MIN PIN #1 = V CCx0.1 MAX #3 = HIGH IMPEDANCE 5.08 1.00 Figure 2) Land Pattern Figure 1) ECS-3951C/3953C 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 42 SMD OSCILLATORS