Features
- Ten single-ended LVCMOS outputs, 7Ω typical output impedance
- Selectable CLK0 and CLK1 LVCMOS clock inputs
- CLK0 and CLK1 can accept the following input levels: LVCMOS and LVTTL
- Maximum input/output frequency: 150MHz
- Output skew: 350ps (maximum)
- 3.3V input, 3.3V outputs
- -40°C to 85°C ambient operating temperature
- Available in lead-free (RoHS 6) package
Description
The 87946I is a low skew, ÷1, ÷2 LVCMOS Fanout Buffer. The 87946I has two selectable single ended clock inputs. The 87946I has two selectable single ended clock inputs. The single ended clock inputs accept LVCMOS or LVTTL input levels. The low impedance LVCMOS outputs are designed to drive 50Ω series or parallel terminated transmission lines. The effective fanout can be increased from 10 to 20 by utilizing the ability of the outputs to drive two series terminated lines. The divide select inputs, DIV_SELx, control the output frequency of each bank. The outputs can be utilized in the ÷1, ÷2 or a combination of ÷1 and ÷2 modes. The master reset input, MR/nOE, resets the internal frequency dividers and also controls the active and high impedance states of all outputs. The 87946I is characterized at 3.3V core/3.3V output. Guaranteed output and part-to-part skew characteristics make the 87946I ideal for those clock distribution applications demanding well defined performance and repeatability.
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