GA1086

The GA1086 is designed to satisfy a wide range of system clocking requirements. Following are two of the most common clocking bottlenecks which can be solved using the GA1086.

TriQuint's GA1086 operates from 30 MHz to 67 MHz. This TTL-level clock buffer chip supports the tight timing requirements of high-performance microprocessors, with near zero input-to-output delay and very low pin-to- pin skew. The GA1086 offers 10 usable outputs synchronized in phase and frequency to a periodic clock input signal. One of the ten outputs is a one- half clock output (CLK ÷ 2). With split termination, the GA1086 can be used to drive up to nineteen 15 pF loads, as shown in Figure 10.

The tight control over phase and frequency of the output clocks is achieved with a 400 MHz internal Phase-Locked Loop (PLL). By feeding back one of the output clocks to FBIN, the on-chip PLL continuously maintains synchronization between the input clock (CLK) and all ten outputs. Any drift or gradual variation in the system clock is matched and tracked at the ten outputs. The GA1086 output buffers are symmetric, each sourcing and sinking up to 30 mA of drive current. For diagnostic purposes, the GA1086 has a test mode which is used to test the device and associated logic by single-stepping through the control logic.

The GA1086 is fabricated using TriQuint's One-Up™  gallium arsenide technology to achieve precise timing control and to guarantee 100% TTL compatibility. The output frequency makes GA1086 ideal for clock generation and distribution in a wide range of high-performance microprocessor-based  systems.  Many other CISC- and RISC-based systems will also benefit from its tight control of skew and delay.