Cypress Semiconductor Corp CY7B991V-7JXC

Description
The CY7B991V 3.3V RoboClock® Low Voltage Programmable Skew Clock Buffer (LVPSCB) is a multiple output clock driver that provides userselectable control over system clock functions. It offers minimal output skews and fullswing logic levels (LVTTL) to drive terminated transmission lines with impedances as low as 50 ohms.

Features
All output pair skew <100 ps typical (250 ps max)
3.75 MHz to 80 MHz output operation
Userselectable output functions:
Selectable skew up to 18 ns
Inverted and noninverted
Operation at onehalf and onequarter input frequency
Operation at 2x and 4x input frequency (input as low as 3.75 MHz)
Zero input to output delay
50% duty cycle outputs
Lowvoltage transistortransistor logic (LVTTL) outputs drive 50 ohm terminated lines
Operates from a single 3.3V supply
Low operating current
32pin plastic leaded chip carrier (PLCC) package
Low cycletocycle jitter (100 ps typical)

Applications
The CY7B991V LVPSCB is ideal for use in highperformance computer systems where precise timing is critical. It can be used to optimize the timing of clock signals in a variety of applications, including:
Computer motherboards
Graphics cards
Network interface cards
Storage devices
Industrial control systems