器件名称: ASM2I99447
功能描述: 3.3V/2.5V 1:9 LVCMOS Clock Fanout Buffer
文件大小: 565.14KB 共14页
简 介:May 2005 rev 0.3 3.3V/2.5V 1:9 LVCMOS Clock Fanout Buffer
Features
9 LVCMOS Compatible Clock Outputs 2 Selectable, LVCMOS Compatible Inputs Maximum Clock Frequency of 350 MHz Maximum Clock Skew of 150 pS Synchronous Output Stop in Logic Low State Eliminates Output Runt Pulses High–Impedance Output Control 3.3V or 2.5V Power Supply Drives up to 18 Series Terminated Clock Lines Ambient Temperature Range –40°C to +85°C 32 Lead LQFP and TQFP Packaging Supports Clock Distribution in Networking,
ASM2I99447
ASM2I99447 is specifically designed to distribute LVCMOS compatible clock signals up to a frequency of 350 MHz. Each output provides a precise copy of the input signal with a near zero skew. The outputs buffers support driving of 50 terminated transmission lines on the incident edge: each is capable of driving either one parallel terminated or two series terminated transmission lines. Two selectable independent LVCMOS compatible clock inputs are available, providing support of redundant clock source systems. The ASM2I99447 CLK_STOP control is synchronous to the falling edge of the input clock. It allows the start and stop of the output clock signal only in a logic low state, thus eliminating potential output runt pulses. Applying the OE control will force the outputs into high impedance mode. All inputs have an internal pull–up or pull–down resistor preventing unused and open inputs from floating. The device supports a 2.5V or 3.3V power supply and an ambient tempera……
