PI6C4911505-04 High Performance 1:5 LVPECL Fanout Buffer Features Description ÎÎ5 LVPECL outputs The PI6C4911505-04 is a high performance fanout buffer devicewhich supports up to 1.5GHz frequency. The device has 2 selectable clock inputs that can accept most differential and single ended clock sources. This device is ideal for systems that need to distribute low jitter clock signals to multiple destinations. ÎÎUp to 1.5GHz output frequency ÎÎUltra low additive phase jitter: < 0.03 ps (typ) (differential 156.25MHz, 12KHz to 20MHz integration range) ÎÎTwo selectable inputs ÎÎLow delay from input to output (Tpd typ. 1.5ns) Applications ÎÎ2.5V/3.3V power supply ÎÎNetworking systems including switches and Routers ÎÎIndustrial temperature support ÎÎHigh frequency backplane based computing and telecom ÎÎTSSOP-20 package platforms Pin Configuration (20-Pin TSSOP) Block Diagram nEN Pulldown D Q LE CLK0 nCLK0 CLK1 CLK_SEL Pulldown Pullup 0 Pulldown 1 Q0 nQ0 Q1 nQ1 Pulldown Q2 nQ2 Q3 nQ3 Q4 nQ4 12-0269 1 Q0 1 20 VDD nQ0 2 19 nEN Q1 3 18 VDD nQ1 4 17 NC Q2 5 16 CLK1 nQ2 6 15 CLK0 Q3 7 14 nCLK0 nQ3 8 13 NC Q4 9 12 CLK_SEL nQ4 10 11 VEE www.pericom.com PI6C4911505-04 Rev A 10/31/12 PI6C4911505-04 High Performance 1:5 LVPECL Fanout Buffer Pinout Table Pin # Pin Name Q0 1, 2 nQ0 Q1 3, 4 nQ1 Q2 5, 6 nQ2 Q3 7, 8 nQ3 Q4 9, 10 nQ4 Type Description Output LVPECL output clock Output LVPECL output clock Output LVPECL output clock Output LVPECL output clock Output LVPECL output clock 11 VEE Power Negative power supply 12 CLK_SEL Input Clock input source selection pin 13, 17 NC - No connect Input Differential clock input CLK0 14, 15 nCLK0 16 CLK1 Input CMOS clock input 18, 20 VDD Power Power supply 19 nEN Input Synchronizing clock enable. When LOW, clock outputs enabled. When HIGH, Q outputs are forced low, nQ outputs forced high. 12-0269 2 www.pericom.com PI6C4911505-04 Rev A 10/31/12 PI6C4911505-04 High Performance 1:5 LVPECL Fanout Buffer Function Table Table 1: Input select function CLK_SEL Function 0 CLK0, nCLK0 1 CLK1 Table 2: Enable function Outputs nEN Q0:Q4 nQ0:nQ4 1 Disabled; LOW Disabled; HIGH 0 Enabled Enabled 12-0269 3 www.pericom.com PI6C4911505-04 Rev A 10/31/12 PI6C4911505-04 High Performance 1:5 LVPECL Fanout Buffer Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested) Note: Storage temperature....................................................-55 to +150ºC Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Supply Voltage to Ground Potential (VDD).............. -0.5 to +4.6V Inputs (Referenced to GND).............................. -0.5 to VDD+0.5V Clock Output (Referenced to GND)................. -0.5 to VDD+0.5V Soldering Temperature (Max of 10 seconds).....................+260ºC Latch up...................................................................................200mA Power Supply Characteristics and Operating Conditions Symbol Parameter VDD Core Supply Voltage IDD Power Supply Current TA Ambient Operating Temperature Test Condition Min. Typ. Max. 3.0 3.3 3.6 2.375 2.5 2.625 All outputs unloaded -40 Units V 150 mA 85 °C DC Electrical Specifications - Differential Inputs Symbol Parameter IIH Input High current: CLK0, CLK1 IIL Min. Max. Units Input = VDD 150 uA Input High current: nCLK0 Input = VDD 5 uA Input Low current: CLK0, CLK1 Input = GND -5 uA Input Low current: nCLK0 Input = GND -150 uA CIN Input capacitance VIH Input high voltage VIL Input low voltage -0.3 VID Input Differential Amplitude PK-PK 0.15 VCM Common model input voltage 12-0269 Typ. 4 PF VDD+0.3 VEE+0.5 4 www.pericom.com V V 1.3 V VDD -0.85 V PI6C4911505-04 Rev A 10/31/12 PI6C4911505-04 High Performance 1:5 LVPECL Fanout Buffer DC Electrical Specifications - LVCMOS Inputs Symbol Parameter Conditions Min. Typ. Max. Units IIH Input High current Input = VDD 150 uA IIL Input Low current Input = GND -150 VIH Input high voltage VDD =3.3V 2.0 VDD+0.3 V VIL Input low voltage VDD =3.3V -0.3 0.8 V VIH Input high voltage VDD =2.5V 1.7 VDD+0.3 V VIL Input low voltage VDD =2.5V -0.3 0.7 V uA DC Electrical Specifications- LVPECL Outputs Parameter Description Output High voltage VOH Conditions Min. Typ. Max. VDD =3.3V 2.1 2.6 VDD =2.5V 1.3 1.6 VDD =3.3V 1.3 1.8 VDD =2.5V VSWING V V Output Low voltage VOL Units Peak to Peak Output Voltage Swing 0.5 0.8 0.6 1.1 V ` 12-0269 5 www.pericom.com PI6C4911505-04 Rev A 10/31/12 PI6C4911505-04 High Performance 1:5 LVPECL Fanout Buffer AC Electrical Specifications Parameter Description Conditions Min. Typ. Max. FOUT Clock output frequency Tr Output rise time From 20% to 80% 150 ps Tf Output fall time From 80% to 20% 150 ps TODC Output duty cycle Frequency<650MHz, LVPECL input 48 VPP Output swing Single-ended LVPECL outputs 400 Tj Buffer additive jitter RMS TSK Output Skew TPD Propagation Delay TP2P Skew Part to Part Skew1 CLK0/ nCLK0 input, LVPECL 1500 CLK1 input 300 Units MHz 52 % mV 0.03 1500 ps 35 ps 2100 ps 150 ps 1. Defined as skew between outputs on different devices operating at the same supply voltages and with equal load conditions. Configuration Test Load Board Termination for LVPECL VDD ZO = 50Ω TLA L = 0 ~ 10in Device 100Ω TLA ZO = 50Ω 150Ω 12-0269 150Ω 6 www.pericom.com PI6C4911505-04 Rev A 10/31/12 PI6C4911505-04 High Performance 1:5 LVPECL Fanout Buffer Packaging Mechanical: 20-Pin TSSOP (L) DATE: 05/03/12 DESCRIPTION: 20-pin, 173mil Wide TSSOP Notes: 1. Refer JEDEC MO-153F/AC 2. Controlling dimensions in millimeters 3. Package outline exclusive of mold flash and metal burr PACKAGE CODE: L DOCUMENT CONTROL #: PD-1311 REVISION: F 12-0373 Ordering Information(1-3) Ordering Code Package Code Package Description PI6C4911505-04LIE L 20-pin, TSSOP, Pb-Free and Green Notes: 1. 1Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ 2. E = Pb-free and Green 3. Adding an X suffix = Tape/Reel 12-0269 7 www.pericom.com PI6C4911505-04 Rev A 10/31/12