(Hong Kong)
Product Summary
The CY29946AI is a low-voltage 200-MHz clock distribution buffer with the capability to select one of two LVCMOS/LVTTL compatible input clocks. These clock sources can be used to provide for test clocks as well as the primary system clocks. All other control inputs are LVCMOS/LVTTL compatible. The 10 outputs are LVCMOS or LVTTL compatible and can drive 50Ω series or parallel terminated transmission lines. For series terminated transmission lines, each output can drive one or two traces giving the CY29946AI an effective fan-out of 1:20. The CY29946AI is capable of generating 1× and 1/2× signals from a 1× source. These signals are generated and retimed internally to ensure minimal skew between the 1× and 1/2× signals. SEL(A:C) inputs allow flexibility in selecting the ratio of 1× to1/2× outputs.
Parametrics
CY29946AI absolute maximum ratings: (1)Maximum Input Voltage Relative to VSS: VSS – 0.3V; (2)Maximum Input Voltage Relative to VDD: VDD + 0.3V; (3)Storage Temperature:–65℃ to + 150℃; (4)Operating Temperature:–40℃ to +85℃; (5)Maximum ESD protection: 2 kV; (6) Maximum Power Supply: 5.5V; (7) Maximum Input Current: ±20mA.
Features
CY29946AI features: (1)2.5V or 3.3V operation; (2)200-MHz clock support; (3)Two LVCMOS-/LVTTL-compatible inputs; (4)Ten clock outputs: drive up to 20 clock lines; (5)1×or 1/2× configurable outputs; (6)Output three-state control; (7)250-ps max Output-to-output skew; (8) Pin-compatible with MPC946, MPC9446; (9) Available in commercial and industrial temperature range; (10) 32-pin TQFP package.
Diagrams
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