ICS873990

Integrated Circuit Systems, Inc. www.DataSheet4U.com ICS873990 LOW VOLTAGE, LVCMOS/ CRYSTAL-TO-LVPECL/ECL CLOCK GENERATOR FEATURES 14 differential LVPECL outputs Selectable crystal oscillator interface or TEST_CLK inputs TEST_CLK accepts the following input levels: LVCMOS, LVTTL Output frequency: 400MHz (maximum) Crystal input frequency range: 10MHz to 25MHz VCO range: 200MHz to 800MHz Output skew: 250ps (maximum) Cycle-to-cyle jitter: ±50ps (typical) LVPECL mode operating voltage supply range: VCC = 3.135V to 3.465V, VEE = 0V ECL mode operating voltage supply range: VCC = 0V, VEE = -3.465V to -3.135V 0°C to 70°C ambient operating temperature Industrial temperature available upon request Lead-Free package fully RoHS compliant GENERAL DESCRIPTION The ICS873990 is a low voltage, low skew, 3.3V LVPECL/ECL Clock Generator and a member HiPerClockS™ of the HiPerClockS™ family of High Performance Clock Solutions from ICS. The ICS873990 has two selectable clock inputs. The XTAL1 and XTAL2 are used to interface to a crystal and the TEST_CLK pin can accept a LVCMOS or LVTTL input. This device has a fully integrated PLL along with frequency configurable outputs. An external feedback input and output regenerates clocks with “zero delay”. ICS The four independent banks of outputs each have their own output dividers, which allow the device to generate a multitude of different bank frequency ratios and output-to-input frequency ratios. The output frequency ra...