PI6C2405A Zero-Delay Clock Buffer Features Description Maximum rated frequency: 133 MHz The PI6C2405A is a PLL based, zero-delay buffer, with the ability to distribute five outputs of up to 133MHz at 3.3V. All the outputs Low cycle-to-cycle jitter are distributed from a single clock input CLKIN and output OUT0 Input to output delay, less than 300ps performs zero delay by connecting a feedback to PLL. Internal feedback allows outputs to be synchronized An internal feedback on OUT0 is used to synchronize the out- to the clock input puts to the input the relationship between loading of this signal 5V tolerant input* and the outputs determines the input-output delay. PI6C2405A Spread spectrum clock ready is able to track spread spectrum clocking for EMI reduction. Operates at 3.3V V DD PI6C2405A is characterized for both commercial and industrial Packaging (Pb-free & Green available): operation. -8-pin, 150-mil SOIC (W) PI6C2405A-1H is a high-drive version of PI6C2405A-1 -8-pin, 173-mil TSSOP (L) * CLKIN must reference the same voltage thresholds for the PLL to deliver zero delay skewing Block Diagram Pin Configuration OUT 0 CLKIN 1 8 OUT 0 PLL CLKIN 2 7 OUT OUT 2 4 OUT 1 OUT 3 1 6 V DD OUT 2 4 5 GND OUT 3 OUT 3 PI6C2405A(1, 1H) OUT 4 Pin Description Pin Signal Description 1 CLKIN Input clock reference frequency (weak pull-down) 2, 3, 5, 7 OUT 1-4 Clock Outputs 4 GND Ground 6 V 3.3V Supply DD 8 OUT0 Clockoutput, internal PLL feedback (weak pull-down) PS8592I 04/29/10 11-0001 1PI6C2405A Zero Delay Clock Buffer Zero Delay and Skew Control CLKIN Input to OUTx Delay vs. Difference in Loading between OUT0 pin and OUTx pins 800 600 400 200 0 -25 -20 -15 -10 -5 0 5 10 15 20 25 -200 -400 PI6C2405A-1H -600 -800 PI6C2405A-1 -900 -1000 Output Load Difference: OUT0 Load - OUTx Load (pF) The relationship between loading of the OUT0 signal and other outputs determines the input-output delay. Zero delay is achieved when all outputs, including feedback, are loaded equally. Maximum Ratings Supply Voltage to Ground Potential ............................................................................................................................. 0.5V to +7.0V DC Input Voltage (Except CLKIN) ...................................................................................................................... 0.5V to V +0.5V DD DC Input Voltage CLKIN .................................................................................................................................................... 0.5 to 7V Storage Temperature .................................................................................................................................................. 65C to +150C Maximum Soldering Temperature (10 seconds) ......................................................................................................................... 260C Junction Temperature .................................................................................................................................................................. 150C Static Discharge Voltage (per MIL-STD-883, Method 3015) .................................................................................................. >2000V Operating Conditions (V = 3.3V 0.3V) CC Parameter Description Min. Max. Units V Supply Voltage 3.0 3.6 V DD Commerical Operating Temperature 0 70 T C A Industrial Operating Temperature -40 85 Load Capacitance, below 100 MHz 30 C L Load Capacitance, from 100 MHz to 133 15 pF C Input Capacitance 7 IN PS8592I 04/29/10 11-0001 2 CLKIN - Input to OUTx Delay (ps)