PI6C20800B PI6C4911505 High Performance 1:5 LVPECL Fanout Buffer Features Description 5 LVPECL outputs e PTh I6C4911505 is a high performance fanout buffer device - which supports up to 1.5GHz frequency. The device has 2 select - Up to 1.5GHz output frequency able clock inputs that can accept most differential clock sources. Ultra low additive phase jitter: < 0.03 ps (typ) (differential This device is ideal for systems that need to distribute low jitter 156.25MHz, 12KHz to 20MHz integration range) clock signals to multiple destinations. Two selectable inputs Low delay from input to output (Tpd typ. 1.5ns) Applications 3.3V power supply Networking systems including switches and Routers Industrial temperature support High frequency backplane based computing and telecom TSSOP-20 package platforms Block Diagram Pin Configuration (20-Pin TSSOP) Q0 20 1 V DD 19 CLK EN nQ0 2 Q1 3 18 V DD 17 nQ1 4 nCLK1 16 CLK1 Q2 5 nQ2 15 6 V EE 14 Q3 7 nCLK0 nQ3 8 13 CLK0 12 Q4 9 CLK SEL 11 nQ4 10 V DD PI6C4911505 Rev. B 12/19/12 12-0313 1PI6C4911505 High Performance 1:5 LVPECL Fanout Buffer Pinout Table Pin Pin Name Type Description Q0 1, 2 Output LVPECL output clock nQ0 Q1 3, 4 Output LVPECL output clock nQ1 Q2 5, 6 Output LVPECL output clock nQ2 Q3 7, 8 Output LVPECL output clock nQ3 Q4 9, 10 Output LVPECL output clock nQ4 11, 18, 20 V Power Power supply DD 12 CLK SEL Input Pulldown Clock input source selection pin CLK0 Pulldown 13, 14 Input Differential clock input nCLK0 Pullup 15 V Power Negative power supply EE CLK1 Pulldown 16, 17 Input Differential clock input nCLK1 Pullup 19 CLK EN Input Pullup Clock output enable/ disable PI6C491PI6C4911505 Rev1505 Rev. B. A 12/19/1212/19/12 12-0313 22