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June 2005
ASM2I9940L
rev 1.0
Low Voltage 1:18 Clock Distribution Chip
Features
LVPECL or LVCMOS Clock Input 2.5V LVCMOS Outputs for Pentium II
Microprocessor Support* 150pS Maximum Output-to-Output Skew Maximum Output Frequency of 250MHz 32 Lead LQFP & TQFP Packaging Dual or Single Supply Device:
Dual VCC Supply Voltage, 3.3V Core and 2.5V Output
Single 3.3V VCC Supply Voltage for 3.3V Outputs
Single 2.5V VCC Supply Voltage for 2.5V I/O Pin and Function compatible to MPC940L,
MPC9109, CY29940 and CY29940-1
Functional Description
The ASM2I9940L is a 1:18 low Voltage Clock distribution chip with 2.5V or 3.3V LVCMOS output capabilities. The device features the capability to select either a differential LVPECL or LVCMOS compatible input. The 18 outputs are 2.5V or 3.