器件名称: ASM2I9942P-32-LT
功能描述: Low Voltage 1:18 Clock Distribution Chip
文件大小: 433.39KB 共10页
简 介:May 2005 rev 0.3 Low Voltage 1:18 Clock Distribution Chip
Features
LVPECL Clock Input 2.5V LVCMOS Outputs for Pentium IITM*
ASM2I9942P
With low output impedance (≈12), in both the HIGH and LOW logic states, the output buffers of the ASM2I9942P are ideal for driving series terminated transmission lines. With an output impedance of 12, the ASM2I9942P can Output–to–Output drive two series terminated transmission lines from each output. This capability gives the ASM2I9942P an effective fanout of 1:36. The ASM2I9942P provides enough copies of low skew clocks for most high performance synchronous systems. The differential LVPECL inputs of the ASM2I9942P allow the device to interface directly with a LVPECL fanout buffer to build very wide clock fanout trees or to couple to a high frequency clock source. The OE pins will place the outputs into a high impedance state. The OE pin has an internal pullup resistor. The ASM2I9942P is a single supply device. The VCC power pins require either 2.5V or 3.3V. The 32 lead LQFP and TQFP package is chosen to optimize performance, board space and cost of the device. The 32–lead LQFP and TQFP have a 7x7mm2 body size with conservative 0.8mm pin spacing.
Microprocessor Support 200pS Skew Maximum Output Frequency of 250MHz @3.3 VCC 32–Lead LQFP and TQFP Packaging Single 3.3V or 2.5V Supply Pin and Function compatible with MPC942P Maximum Targeted
Functional Description
The ASM2I9942P is a 1:18 low voltage clock distribution chip with 2.5V or……
