The term ASIC is literally that: a standard integrated circuit. Most ASICs are fabricated using pure CMOS (complementary metal-oxide-semiconductor) technology and consist of a single large array of logic gates (typically hundreds of thousands of gates, or more), and perhaps a few small memory blocks (16-128 bits in size). Designers of ASICs are usually highly trained in the art of chip design, and use many of the same methods that chip designers use to create product-quality CMOS chips. ASICs are typically used in very high-volume applications that require the lowest possible cost.
The "maximum" voltage is the voltage amplitude that will not overstress the device, and will not cause the device to clip off. Many devices are specified using a maximum voltage (often Vdd/2 or Vdd/4) and a minimum voltage (usually (Vdd - the maximum voltage)). For example, an FPMGA commonly has - 3Vdd as the minimum and + 15V as the maximum. A standard cell may also have +Vdd/2 as the minimum and a max of Vdd/2 or higher as the maximum.  Here are some popular limits: - IO Cells: 1.2 V to 1.6 V - Single Cell Logic levels: 3.3V/5V, 2.5V/3.3V, 1.8V/2.5V - Single Cell Memfrs: 3.3V/5V, 2.5V/3.3V, 1.8V/2.5V - Transfers: 5V/10V, 3.3V/5V, 2.5V/3.3V, 1.8V/2.5V - Power Supply: 5V/10V, 3.3V/5V, 2.5V/3.3V, 1.8V/2.5V - Double data rate (DDR [^1]) chips: L3: 2.5V/3.3V, L2/L1: 3.3V/5V, L0: L0/L1/L2 are referred to as only the lowermost voltage, such as L1 may be 2. d2c66b5586