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. Request a Sample The low profile package is ideal for today’s advanced portable PC and instrumentation designs. OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS ECS-3951M (5V) ECS-3953M (3.3V)* ECS-3951M/3953M Parameters Conditions Units MIN TYP MAX MIN TYP MAX Frequency Range 1.000 125.0 1.000 125.0 MHz Operating -10 +70 -10 +70 °C Temperature Range Storage -55 +125 -55 +125 °C Supply Voltage +4.5 +5.0 +5.5 +3.0 +3.3 +3.6 V DC Standard -100 ±40 +100 -100 ±40 +100 PPM Frequency Stability** Option (B) -50 +50 -50 +50 PPM Option (C) -25 +25 -25 +25 PPM 1.0 ~ 36.0 MHz 20 15 mA • 3.3 or 5.0V version 36.1 ~ 70.0 MHz 55 25 mA Input Current • Low Power Consumption 70.1 ~ 100.0 MHz 60 30 mA • Standby fu nction 100.1 ~ 125.0 MHz 65 30 mA • Seam welded package • Tape & Reel (1,000 pcs) @ ½ VCC Level 40/60 60/40 40/60 60/40 % • PbFree/RoHS Compliant Output Symmetry @ ½ VCC Level 45/55 45/55 % (T Option) 1.0 ~ 70.0 MHz 15 5 nS Rise and Fall Times 70.1 ~ 125.0 MHz 5 5 nS Logic “0” Level VCC x 0.1V max. Logic “1” Level VCC x 0.9V min. Load HCMOS 30 15 pF 1.0 ~ 36.0 MHz 5 5 ms Start-Up Time 36.1 ~ 70.0 MHz 10 10 ms 70.1 ~ 125.0 MHz 15 15 ms Output Current (IOL) VOL=0.5V/0.33 4 4 mA (IOH) VOL=4.5V/2.97V -4 -4 mA Enable/Disable Time 100 100 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 (Pin2) to minimize power line noise. Part Numbering Guide: Example ECS-3951M-500-B-TR ECS - Series - Frequency Abb reviation - Stability Tolerance - Temperature - Output Symmetry - Packaging ECS 3951M +5V 500 = 50 MHz A = ±100 ppm Blank = -10 ~ 70°C Blank = 60/40 TR = 3953M +3.3V B = ±50 ppm M = -20 ~ +70°C T= 45/55 Tape & Reel C = ±25 ppm N = -40 ~ +85°C 1K/Reel U = -55 ~ +125°C D = ±20 ppm 15351 West 109th Street | Lenexa, KS 66219 | Phone: 913.782.7787 | Fax: 913.782.6991 | www.ecsxtal.com

ECS-3951M/3953M Series SMD Clock Oscillator Package Dimensions (mm) Figure 2) Land Pattern Figure 1) Top, Side, and Bottom views Pin Connections ECS-3951M/3953M Standby Control Voltage #1 Tri-State*** Pin #1 = Open*** #3 = Oscillation #2 Ground Pin #1 = ±2.2V Min. #3 = Oscillation #3 Output Pin #1 = 0.8V Max #3 = High Impedance #4 VCC 15351 West 109th Street | Lenexa, KS 66219 | Phone: 913.782.7787 | Fax: 913.782.6991 | www.ecsxtal.com