PI49FCT3802/PI49FCT3803 1:5/1:7 Clock Buffer for Networking Applications Features Description • High Frequency >156 MHz The PI49FCT380x is a 3.3V compatible, high-speed, low-noise non-inverting clock buffer. The key goal in designing the PI6C380x is to target networking applications that require lowskew, low-jitter, and high-frequency clock distribution. Providing output-to-output skew as low as 250ps, the PI49FCT380x is an ideal clock distribution device for synchronous systems. Designing synchronous networking systems requires a tight level of skew from a large number of outputs. • High-speed, low-noise, non-inverting buffer - PI49FCT3802 is 1:5 buffer - PI49FCT3803 is 1:7 buffer • Low-skew (<250ps) between any two output clocks • Low duty cycle distortion <250ps • Low propagation delay <2.5ns • 5V Tolerant input Pin Description • Multiple VDD, GND pins for noise reduction Pin Name • 3.3V supply voltage • Packaging (Pb-free & Green available): - 16-pin TSSOP (L) - 16-pin QSOP (Q) 3802 3803 BUF_IN CLK[0:4] GND VDD BUF_IN CLK[0:4] GND VDD Description Input Outputs GND Power Pin Configuration (PI49FCT3802) Block Diagram (PI49FCT3802) CLK0 CLK1 BUF_IN CLK2 CLK3 CLK4 BUF_IN 1 16 VDD GND 2 15 CLK4 CLK0 3 14 CLK3 VDD 4 13 GND CLK1 5 12 CLK2 GND 6 11 VDD NC 7 10 NC VDD 8 9 16-Pin L, Q GND Pin Configuration (PI49FCT3803) Block Diagram (PI49FCT3803) CLK0 CLK1 BUF_IN CLK2 CLK3 CLK6 1 BUF_IN 1 16 VDD GND 2 15 CLK6 CLK0 3 14 CLK5 VDD 4 13 GND CLK1 5 12 CLK4 GND 6 11 VDD CLK2 7 10 CLK3 VDD 8 9 GND 16-Pin L, Q PS8559A 09/14/04 PI49FCT3802/PI49FCT3803 1:5/1:7 Clock Buffers for Networking Applications Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature...........................................................–65°C to +150°C VDD Voltage ............................................................................ –0.5V to 5.5V Output Voltage......................................................................... –0.5V to 5.5V Input Voltage ........................................................................... –0.5V to 5.5V DC Output Current ............................................................–60mA to +60mA Power Dissipation ............................................................................. 500mW Note: 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. Operating Range VDD Voltage ............................................................................... 3.3V ± 0.3V Commercial Temperature .........................................................0°C to +70°C Industrial Temperature .........................................................–40°C to +85°C Input Frequency ................................................................... DC to 156 MHz Capacitive Loading .................................................................. 10pF to 50pF DC Electrical Characteristics (Over the Operating Range) Parameters Test Conditions(1) Description Min. Typ.(2) Max. VIH Input HIGH Voltage Guaranteed Logic HIGH Level (Input Pins) 2.0 5.5 VIL Input LOW Voltage Guaranteed Logic LOW Level (Input Pins) -0.5 0.8 IIH Input HIGH Current VDD = Max. VIN = VDD 1 IIL Input LOW Current VDD = Max. VIN = GND -1 VIK Clamp Diode Voltage VDD = Min., IIN = –18mA VOH Output HIGH Voltage VCC = Min., VIN = VIH or VIL VOL Output LOW Voltage VCC = Min., VIN = VIH or VIL IOH Output HIGH Current IOL Output LOWCurrent -0.7 IOH = –0.1mA IOH = –12mA 2.4(3) VDD = 3.0V, VIN = VIH OR VIL, VOUT = 1.5V(4) µA -1.2 3.0 V 0.2 IOH = 12mA VDD = 3.0V, VIN = VIH OR VIL, VOUT = V VDD-0.2 IOH = 0.1mA 1.5V(4) Units 0.3 0.5 -45 -75 -180 50 92 200 mA Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VDD = 3.3V, +25°C ambient and maximum loading. 3. VOH = VDD– 0.6V at rated current. 4. This parameter is determined by device characterization but is not production tested. 5. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 2 PS8559A 09/14/04 PI49FCT3802/PI49FCT3803 1:5/1:7 Clock Buffers for Networking Applications Power Supply Characteristics Parameters Description Test Conditions Min. Typ.(2) Max. Units µA IDDQ Quiescent Power Supply Current VDD = Max. VIN = GND or VDD 0.1 30 ∆IDD Supply Current per Inputs @ TTL High VDD = Max. VIN = VDD -0.6V(3) 47 300 50 MHz 43 67 MHz 56 80 MHz 66 100 MHz 81 125 MHz 97 156 Mhz 121 IDD VDD = 3.6V, No load Dynamic Supply Current mA Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VDD = 3.3V, +25°C ambient. 3. Per TTL driven input (VIN = VDD – 0.6V); all other inputs at VDD or GND. Capacitance (TA = 25°C, f = 1 MHz) Parameters(1) CIN COUT Description Input Capacitance Output Capacitance Test Conditions Typ Max. VIN = 0V 3.0 4 VOUT = 0V — 6 Units pF Note: 1. This parameter is determined by device characterization but is not production tested. Switching Characteristics (VDD = 3.3V ± 0.3V, TA = 85°C) Parameters Desciription Test Conditions tR/tF CLKn Rise/Fall Time 0.8V ~ 2.0V tPLH tPHL Propagation Delay BUF_IN to CLKn tsk(o)(3) Skew between two outputs of the same package (same transition) tsk(p)(3) Skew between opposite transitions (tPHL - tPLH) of the same output tsk(t)(3) Skew between two outputs of different packages(4) Min. 1.0 CL = 15pF, 125 Mhz Typ. Max. 0.7 1.0 2.2 2.5 110 250 200 250 Units ns ps 0.55 ns PS8559A 09/14/04 Notes: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. Skew measured at worse cast temperature (max. temp). 4. Identical conditions: loading, transitions, supply voltage, temperature, package type and speed grade. 3 PI49FCT3802/PI49FCT3803 1:5/1:7 Clock Buffers for Networking Applications Switching Waveforms Propagation Delay Pulse Skew – tSK(P) 3V 3V Input Input 1.5V tPLH tPHL 0V tPLH tPHL Output 1.5V 1.5V 0.8V tR tF 0V VOH VOH 2.0V Output 1.5V VOL VOL tSK(p) = | tPHL – tPLH | Package Skew – tSK(T) Output Skew – tSK(O) 3V 3V Input Input 1.5V tPLHx 0V tPHLx tSK(o) CLKy tPHLy 1.5V VOL tSK(t) VOH tSK(t) VOL VOL VOH Package 2 Output 1.5V tPLHy VOH Package 1 Output 1.5V tSK(o) 0V tPHL1 tPLH1 VOH CLKx 1.5V 1.5V tPLH2 tPHL2 VOL tSK(t) = tPLH2 – tPLH1 or tPHL2 – tPHL1 tSK(o) = tPLHy – tPLHx or tPHLy – tPHLx Test Circuits for All Outputs VDD Pulse Generator VIN VOUT D.U.T. CL Definitions: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance, should be equal to Zout of the Pulse Generator. 4 PS8559A 09/14/04 PI49FCT3802/PI49FCT3803 1:5/1:7 Clock Buffers for Networking Applications Packaging Mechanical: 16-Pin QSOP (Q) 16 .008 0.20 MIN. .150 .157 3.81 3.99 Guage Plane .010 0.254 1 0˚-6˚ .016 .035 0.41 0.89 Detail A .189 .197 4.80 5.00 .041 1.04 REF .015 x 45° 0.38 .008 0.203 REF .053 1.35 .069 1.75 Detail A .008 .012 0.203 0.305 .007 .010 0.178 0.254 0.41 .016 1.27 .050 SEATING PLANE .025 BSC 0.635 .008 .013 0.20 0.33 .228 .244 5.79 6.19 .004 0.101 .010 0.254 X.XX DENOTES DIMENSIONS IN MILLIMETERS X.XX Packaging Mechanical: 16-Pin TSSOP (L) 16 .169 .177 1 .193 .201 4.9 5.1 4.3 4.5 .004 .008 .047 max. 1.20 0.45 .018 0.75 .030 SEATING PLANE .0256 BSC 0.65 .007 .012 .002 .006 0.09 0.20 .252 BSC 6.4 0.05 0.15 0.19 0.30 5 PS8559A 09/14/04 PI49FCT3802/PI49FCT3803 1:5/1:7 Clock Buffers for Networking Applications Ordering Information Ordering Code PI49FCT3802L PI49FCT3802LE PI49FCT3802Q PI49FCT3802QE PI49FCT3803L PI49FCT3803LE PI49FCT3803Q PI49FCT3803QE Package Code L L Q Q L L Q Q Package Description 16-pin TSSOP Pb-free & Green, 16-pin TSSOP 16-pin QSOP Pb-free & Green, 16-pin QSOP 16-pin TSSOP Pb-free & Green, 16-pin TSSOP 16-pin QSOP Pb-free & Green, 16-pin QSOP Notes: 1. Thermal characteristics can be found on the web at www.pericom.com/packaging/ Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com 6 PS8559A 09/14/04