± HE 1 ppm Freq. Tolerance SMD ± LVCMOS 1.8V 2.5V 3.3V 5 ppm Freq. Stability Min. Max. 20.0 MHz 60.0 MHz Product Features ● " HE " series features ±1 ppm freq. tolerance with ±5 ppm over -40 to +85° stability. ● A clock has frequency stability close to a TCXO ● Fento sec phase jitter and -154 dBc/Hz at 100 KHz offset superior phase noise. ● An economic solution to tight tolerance and high stability clocks General specifications of all available packages , at Ta=+25°C , CL=15pF " HE " series [ Tri-state Function on pad No. 1 ] Model Output Logic LVCMOS Supply Voltage VDD Available Frequency Range 1.8 VDD ± 10% +2.5 VDD ± 10% +3.3 VDD ± 10% 20.0 ~ 60.0 MHz 20.0 ~ 60.0 MHz 20.0 ~ 60.0 MHz [ 1.0 ~ 19.99 MHz ] 1.5 mA max. 2.5 mA max 4.0 mA max. [ 20.0 ~ 39.99 MHz ] 3.0 mA max. 3.5 mA max. 4.0 mA max. 4.5 mA max. 5.0 mA max. 7.0 mA max. Current Consumption [ 15pF load ] [ 40.0 ~ 52.0 MHz ] Frequency Tolerance at 25 °C Frequency Stability Commercial ( ± 5 ppm is available ) Industrial ± 1.0 ppm ( max. ) ( -10°C to +70°C ) enter the desired stability after the code " C " , For example : " C5 " ± 5 ppm over -10°C to +70°C ( -40°C to +85°C ) enter the desired stability after the code " Output Logic " High " , " 1 " 0.9 * VDD min. I " , For example : " I5 " ± 5 ppm over -40°C to +85°C Output Logic " Low " , " 0 " 0.1 * VDD max. Load 15 pF Rise Time (Tr) VDD=1.8 or 2.5V: 6.0 n sec. ( max. ) , VDD=3.3V: 4 ns ( max ). Condition: 10% → 90% of waveform, 15 pF load Fall Time (Tr) VDD=1.8 or 2.5V: 6.0 n sec. ( max. ) , VDD=3.3V: 4 ns ( max ). Condition: 90% → 10% of waveform, 15 pF load Start-up Time 0.6 m sec. ( typical ) ; 1.0 m sec. ( max.) Duty Cycle 50% ± 5% ( measured at 50% VDD ) Tri-state Function on pad No. 1 Tri-state on pad 1 is standard for HE57 , HE53 and HE32 series. Phase Jitter ( RMS ) [ 25 MHz , 3.3V ] 300 fs ( typical ) [ 12 KHz to 20 MHz integated ] SSB Phase Noise [ 25 MHz , 3.3V ] Offset 10 Hz 100 Hz 1 KHz 1 0KHz 100 KHz 1 MHz 10 MHz dBc / Hz ( typical ) -70 -101 -128 -148 -154 -156 -160 Storage Temperature -55°C to + 150°C Aging at Ta=+25ºC ± 2 ppm max. for first year (1) Inclusive of 25ºC tolerance, operating temperature range, ±10% input voltage variation, load change, aging shock and vibration Outline Dimensions with Suggested Pad Layout. [Unit: mm] [ HE32 ] Pin connections : pin 1 : Enable / Disable pin 2 : Ground pin 3 : Output pin 4 : Supply Voltage [ HE53 ] Pin connections : pin 1 : Enable / Disable pin 3 : Output Mercury pin 2 : Ground pin 4 : Supply Voltage [ HE57 ] Pin connections : pin 1 : Enable / Disable pin 3 : Output pin 2 : Ground pin 4 : Supply Voltage www .mercury-crystal.com ■Taiwan : Tel (886)-2-2406-2779 / [email protected] ■U.S.A: Tel: (1)-909-466-0427 / [email protected] ■China: Tel: (86)-512-5763-8100 / [email protected]