WT8043 is a synchronous signal discriminator designed by Weltrend Semiconductor, Inc. for multi-sync display monitors. It supports standard IBM VGA, VESA super VGA and IBM 8514/A video modes, as well as non-standard video modes. It can accept separate H&V Synchronous signals with any polarities and supports VESA VGA (640x480, 640x400, 640x350), VESA SVGA (800x600), European SVGA (800x600), VESA new SVGA (800x600), XGA (1024x768) and 1280x1024 resolutions. It also supports NEC (24K) mode, 3 VESA New 75Hz timing modes and Apple MAC II (35k) display modes.
The Weltrend WT8043 is a silicon monolithic circuit designed for synchronous signal processing in multi-sync display monitors. It supports standard IBM VGA, VESA Super VGA, and IBM 8514/A video modes, as well as non-standard modes with user-defined frequency ranges. The chip integrates horizontal and vertical frequency discrimination, display mode selection, and synchronous pulse polarity detection into a single package to reduce board size and component costs.
| Power supply voltage | 5V |
|---|---|
| Horizontal frequency range | 25KHz to 80KHz |
| Vertical frequency range | 50Hz to 120Hz |
| Operating temperature range | 0~70 °C |
| Storage temperature range | -40~125 °C |
It supports VESA VGA, VESA SVGA, European SVGA, XGA, 1280x1024, NEC (24K) mode, and Apple MAC II (35k) mode.
Yes, the mode select and frequency discrimination control outputs are open collector and can be pulled up to 12V.