MPC948L

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Advance Information Low Voltage 1:12 Clock Distribution Chip The MPC948L is a 1:12 low voltage clock distribution chip. The device is pin and function compatible with the MPC948 with the added feature of 2.5V output capabilities. The device features the capability to select either a differential LVPECL or a LVTTL compatible input. The 12 outputs are 2.5V LVCMOS or LVTTL compatible and feature the drive strength to drive 50Ω series terminated transmission lines. With output–to–output www.DataSheet4U.com skews of 350ps, the MPC948L is ideal as a clock distribution chip for the most demanding of synchronous systems. MPC948L LOW VOLTAGE 1:12 CLOCK DISTRIBUTION CHIP Clock Distribution for Intel Microprocessors LVPECL or LVCMOS/LVTTL Clock Input 350ps Maximum Output–to–Output Skew Drives Up to 24 Independent Clock Lines Maximum Output Frequency of 150MHz Synchronous Output Enable Tristatable Outputs 32–Lead TQFP Packaging 2.5V Output Capability FA SUFFIX 32–LEAD TQFP PACKAGE CASE 873A–02 With an output impedance of approximately 7Ω, in both the HIGH and LOW logic states, the output buffers of the MPC948L are ideal for driving series terminated transmission lines. More specifically, each of the 12 MPC948L outputs can drive two series terminated 50Ω transmission lines. With this capability, the MPC948L has an effective fanout of 1:24 in applications where each line drives a single load. The differential LVPECL inputs of t...