PI6C20800B PI6C48535-11C 4 Output LVPECL Fanout Buffer Features Description 4 LVPECL outputs e PTh I6C48535-11C is a fanout buffer device with embedded oscillator circuiit which supports up to 266MHz frequency. This Up to 266MHz output frequency device is ideal for systems that need to generate and distribute Ultra low additive phase jitter: < 0.03 ps (typ) low jitter clock signals to multiple destinations. Two selectable inputs Low delay from input to output (Tpd typ. < 1.5ns) Applications 2.5V / 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) Pullup D SYNC OE GND 20 1 Q0+ Q LE Q0+ SYNC OE 19 Q0- 2 Q0- IN SEL 18 3 V Pulldown DD REF IN 0 Q1+ REF IN 4 17 Q1+ Q1- XTAL IN OSC 1 XTAL OUT 16 Q1- NC 5 Q2+ 15 Q2- XTAL IN 6 Q2+ Pulldown IN SEL 14 XTAL OUT 7 Q2- Q3+ Q3- 13 NC 8 V DD 12 NC 9 Q3+ 11 V 10 Q3- DD www.pericom.com PI6C48535-11C Rev A 8/31/15 15-0110 1PI6C48535-11C 4 Output LVPECL Fanout Buffer Pinout Table Pin Pin Name Type Description 1 GND Power Ground Synchronous clock enable. When High, clock 2 SYNC OE Input Pullup outputs follow REF IN. When low, Q+ outputs are forced low, Q- are forced high 3 IN SEL Input Pulldown Clock input source selection pin 4 REF IN Input Pulldown Clock input 5, 8, 9 NC - No connect XTAL IN 6, 7 Input Crystal Oscillator connection XTAL OUT 10, 13, 18 V Power Power supply DD Q3+ 11, 12 Output LVPECL output clock 3 Q3- Q2+ 14, 15 Output LVPECL output clock 2 Q2- Q1+ 16, 17 Output LVPECL output clock 1 Q1- Q0+ 19, 20 Output LVPECL output clock 0 Q0- Function Table Table 1: Clock source input select function IN SEL Function 0 REF IN is the selected reference input 1 XTAL IN is the selected reference input Table 2: SYNC OE select function SYNC OE Function 0 All outputs disabled. Q+ disabled low, Q- disabled High. 1 All outputs enabled. Pin Characteristics Symbol Parameter Min Typ Max Units R Input Pullup Resistor 51 k PULLUP R Input Pulldown Resistor 51 k PULLDOWN www.pericom.com PI6C48535-11C Rev A 8/31/15 15-0110 2