The Si52112-B5 two output PCIe Gen1 Clock Generator provides industry-leading jitter performance, compliance with PCI Express (PCIe) Gen 1/2/3 requirements, outstanding frequency flexibility, and configurable AC parameters for signal integrity optimization. The Si52112-B5's use of push-pull HCSL outputs ensures the lowest power consumption, while saving board space and external termination resistors for added BOM consolidation. The Si52144 four output PCIe Gen1 Clock Generator provides industry-leading jitter performance, compliance with PCI Express (PCIe) Gen 1/2/3 requirements, outstanding frequency flexibility, and configurable AC parameters for signal integrity optimization. The Si52144 meets PCIe Gen1,2,3 phase jitter requirements with margin, and is available in industrial temperature range. The use of push-pull HCSL outputs ensures the lowest power consumption, while saving board space and external termination resistors for added BOM consolidation. The I2C interface provides signal tuning. The Individual OE pin per output allows programmable control of each output buffer.