VT8225
Features
∗ Generates essential clock signals for the motherboard ∗ 4V to 7V operating supply range ∗ Supports 80286, 80386 and 80486 based designs ∗ Wide range of selectable output frequencies ∗ < 2ns skew between CPU and 2X CPU clock outputs ∗ Single low cost crystal (14.318Mhz) used as reference frequency ∗ Smooth transition on frequency switching ∗ 50% duty cycle ∗ Power down mode for low power consumption ∗ TTL or CMOS patible outputs with 12m A drive capability ∗ Low, short and long term jitter ∗ 14 pin DIP and 14 pin SOIC (300 mil body) package options
Description
The VT8225 is a universal clock generator for motherboard design. The product at a glimpse:
1. Generates all kinds of required clocks for CPU and bus operation from 6 Mhz to 80 Mhz. 2. Eliminates at least two oscillators, which are oscillators for CPU and 14.318MHz oscillator. 3. Simplifies inventory: VT8225 covers required main clock for the motherboard design. 4. Provides a reliable clock for the PLL design. 5. Is...
