General Description

The VT98501 is a 3.3V CMOS, clock multiplier integrated circuit. The device provides an excellent quality high frequency output clock from a lower frequency crystal or clock input. Tri-level selection inputs S0 and S1 are used to select any one of nine multipliers, stored in the on-board ROM, and apply it to the input to produce the desired output. The resulting output includes many commonly used frequencies up to 160 MHz. Phase Locked Loop (PLL) technology allows the device to use an input signal from an inexpensive crystal.

Features

• Low phase noise

• Zero ppm multiplication error

• Input clock frequency 2 - 50 MHz.

• Input crystal frequency 5 – 27 MHz

• Output clock frequencies up to 160 MHz.

• 5V tolerant inputs and output

• Exceptionally low jitter: 25 ps one sigma

• Fully Compatible with all popular CPUs

• Duty Cycle of 45/55 up to 160 MHz.

• 25mA drive capability at TTL levels

• High-Z output for board level testing

Applications

• Oscillator Replacement

• LCD monitor clock source