VT8225 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – Clock Generator

VIA Technologies, Inc.
1045 Mission Court.
Fremont, CA 94539
USA
TEL: [phone] FAX: [phone]
VT8225
8th. Fl., No. 533
Chung-cheng Rd.,Hsin-tien
Taipei, Taiwan, R.O.C.
TEL: [phone] FAX: [phone]
VT8225 Clock Generator
Date: July 5, 1994
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 compatible outputs with 12mA 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 pin-to-pin compatible to oscillator.
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