SY75602, SY75603, SY75604 PCIe Clock Buffers Microchip Technology SY75602, SY75603, and SY75604 PCIe Clock Buffers are fanout buffers with an ultra-low additive jitter of 10fs for PCIe 5.0, 20fs for PCIe 3.0/4.0, and 52fs in the 12kHz to 20MHz band. The SY75602, SY75603, and SY75604 Clock Buffers can be used in all PCIe 1/2/3/4/5 common clock and SRIS applications. These devices have embedded low-dropout regulators (LDO) for superior power noise supply rejection. The SY75602, SY75603, and SY75604 Clock Buffers support 1.8V, 2.5V, and 3.3V supplies with a tolerance of ±10%, which exceeds ±9% required by PCIe Card Electro Mechanical Specification.