ISM97
- 2.5mm x 3.2mm Ceramic Package SMD Oscillator, TTL / HC-MOS
Product Features:
Low Jitter, Non-PLL Based Output
CMOS/TTL Compatible Logic Levels
Compatible with Leadfree Processing
Applications:
Fibre Channel
Server and Storage
Sonet /SDH
802.11 / Wifi
T1/E1, T3/E3
System Clock
| Frequency |
1 MHz to 152.250 MHz |
| Current | |
| 25 mA Max. (5.0v) |
| 20 mA Max. (1.8V - 3.3V) |
| Duty Cycle | Specify 50% ±10% or ±5% See Table in Part Number Guide |
| Enable / Disable Time | 100 nS Max. N.C. or >=70% VDD = Enable. <=30% VDD = Disable |
| Frequency Stability | See Frequency Stability Table (Includes room temperature tolerance and stability over operating temperature) |
| Jitter: RMS (1sigma) | |
| 1 MHz - 60 MHz | 5 pS RMS (1 sigma) Max. accumulated jitter (20K adjacent periods) |
| Max Integrated | |
| 1 MHz - 60 MHz | 1.5 pS RMS (1 sigma -12KHz to 20MHz) |
| Max Total Jitter | |
| 1 MHz - 60 MHz | 50 pS p-p (100K adjacent periods) |
| Operating Temperature | See Operating Temperature Table in Part Number Guide |
| Output Level | |
| HC-MOS | 0 = 0.1 VCC Max., 1 = 0.9 VCC Min. |
| TTL | 0 = 0.4 VDC Max., 1 = 2.4 VDC Min. |
| Output Load | |
| See Table in Part Number Guide |
| Rise / Fall Time | 6 nS Max. |
| Start-up Time | 10 mS Max. |
| Storage Temperature | -55° C to +125° C |
| Supply Voltage | See Input Voltage Table, Tolerance ±5 % |
Part Number Guide
- Sample Part Number: ISM97 - 3251BH - 20.000 MHz
| Package | Input Voltage | Operating Temperature | Symmetry (Duty Cycle) | Output | Stability (in ppm) | Enable / Disable | Frequency |
|---|
| ISM97 | 5 = 5.0 V | 1 = 0° C to +70° C | 5 = 45 / 55 Max. | 1 = 10 TTL / 15 pF HC-MOS | **E = ±10 | H = Enable | 20.000 MHz |
| 3 = 3.3 V | 6 = -10°C to +70°C | 6 = 40 / 60 Max. | 6 = 30 pF | **D = ±15 | O = N/C | |
| 7 = 3.0 V | 3 = -20°C to +70°C | | 5 = 50 pF HC-MOS (<40 MHz) | **F = ±20 | | |
| 2 = 2.7 V | 4 = -30°C to +75°C | | | **A = ±25 | | |
| 6 = 2.5 V | 2 = -40°C to +85°C | | | B = ±50 | | |
| 1 = 1.8 V * | | | | C = ±100 | | |
NOTE: A 0.01 µF bypass capacitor is recommended between Vcc (pin 4) and GND (pin 2) to minimize power supply noise.
* Not available at all frequencies.
** Not available for all temperature ranges
*** Frequency, supply, and load related parameters.
