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ASM3P2508SP Datasheet(PDF) 3 Page - Alliance Semiconductor Corporation |
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ASM3P2508SP Datasheet(HTML) 3 Page - Alliance Semiconductor Corporation |
3 / 7 page February 2005 ASM3P2508SP rev 0.4 Clock Synthesizer and Frequency Generator with Peak EMI reduction 3 of 7 Notice: The information in this document is subject to change without notice. DC Electrical Characteristics (Test condition: All parameters are measured at room temperature (+25°C) unless otherwise stated) Symbol Parameter Min Typ Max Unit VIL Input low voltage VSS - 0.3 – 0.8 V VIH Input high voltage 2.0 – VDD + 0.3 V IIL Input low current – – -35 µA IIH Input high current – – 35 µA IXOL XOUT output low current (@0.4V, VDD=3.3V) – 3 – mA IXOH XOUT output high current (@2.5V, VDD=3.3V) – 3 – mA VOL Output low voltage (VDD = 3.3 V, IOL = 20 mA) – – 0.4 V VOH Output high voltage (VDD = 3.3 V, IOH = 20 mA) 2.5 – – V IDD Static supply current * – – 10 µA ICC Dynamic supply current (3.3V, 33.33MHz, 25MHz , 20MHz and 15pF loading) – 20 _ mA VDD Operating voltage 3.0 3.3 3.6 V tON Power-up time (first locked cycle after power up)** – – 5 mS ZOUT Clock output impedance – 50 – Ω * PWRDNB pin is pulled low ** VDD and XIN/CLKIN input are stable, PWRDNB pin is made high from low. AC Electrical Characteristics Symbol Parameter Min Typ Max Unit XIN Input frequency – 25 – MHz PCI_CLK – 33.33 – MHz T1_CLK 24.999375 25 25.000625 Sys_REF_CLK Output frequency – 20 – MHz Modulation Rate – 30 – KHz PCI_CLK (SSCG) Deviation – -0.5 – % tLH* Output rise time (measured at 0.8V to 2.0V) 0.7 0.9 1.0 nS tHL* Output fall time (measured at 2.0V to 0.8V) 0.6 0.8 1.0 nS tJC Jitter (cycle to cycle) – 150 175 pS tD Output duty cycle 45 50 55 % * tLH and tHL are measured into a capacitive load of 15pF |
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