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 CONDITIONS MIN 1.800 -10 -55˚ +4.5 FREQUENCY RANGE Operating Storage TEMPERATURE RANGE SUPPLY VOLTAGE Standard Option (B) Option (C) 1.8 ~ 36.0 MHz 36.1 ~ 70.0 MHz @ 1/2 VCC Level FREQUENCY STABILITY* INPUT CURRENT OUTPUT SYMMETRY RISE AND FALL TIMES LOAD START-UP TIME (IOL) (IOL) (IOH) ENABLE/DISABLE TIME OUTPUT CURRENT +5.0 40/60 VOL VOH HCMOS 1.8 ~ 36.0 MHz 36.0 ~ 70.0 MHz VOL VOH OUTPUT VOLTAGE ECS-3955M (5V) TYP 50 ±4 7 MAX 70.0 +70 +125 +5.5 ±100 ±50 ±25 30 65 60/40 ns VCC x 0.1V VCC x 0.9V 100 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 * 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) 1.40 1 2 4 3 4.20 5.0 max. 1.4 7.5 max. 1.6 ± 0.15 2 1 2.00 0.6 3 2.6 4 PIN CONNECTIONS #1 TRI-STATE** #2 GND #3 OUTPUT #4 VCC 0.01µF 5.08 max. Figure 1) ECS-3955M Series Top, Side and Bottom Views 5.08 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 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