DATASHEET ICS2305 3.3 VOLT ZERO DELAY LOW SKEW BUFFER Description Features The ICS2305 is a low phase noise, high-speed PLL based, low-skew zero delay buffer. Based on IDT’s proprietary low jitter Phase Locked Loop (PLL) techniques, the device provides four low skew outputs at speeds up to 133 MHz at 3.3 V. The outputs can be generated from the PLL (for zero delay), or directly from the input (for testing), and can be set to tri-state mode or to stop at a low level. The PLL feedback is on-chip and is obtained from the CLKOUT pad. • • • • • Clock outputs from 10 to 133 MHz • • • • • • 5 V tolerant CLKIN The ICS2305 is available in two different versions. The ICS2305-1 is the base part. The ICS2305-1H is a high drive version with faster rise and fall times. Zero input-output delay Four low skew (<250 ps) outputs Device-to-device skew <700 ps Full CMOS outputs with 25 mA output drive capability at TTL levels Tri-state mode for board-level testing Advanced, low power, sub-micron CMOS process Operating voltage of 3.3 V Industrial temperature range available Packaged in 8-pin SOIC Block Diagram VDD CLKIN PLL CLKOUT CLK1 CLK2 CLK3 CLK4 GND IDT™ / ICS™ 3.3 VOLT ZERO DELAY LOW SKEW BUFFER 1 ICS2305 REV F 051310 ICS2305 3.3 VOLT ZERO DELAY LOW SKEW BUFFER ZERO DELAY BUFFER Pin Assignment CLKIN 1 8 CLKOUT CLK2 2 7 CLK4 CLK1 3 6 VDD GND 4 5 CLK3 8 pin ( 150 mil ) SOIC Pin Descriptions Pin Number Pin Name Pin Type 1 CLKIN Input Clock input (5 V tolerant). 2 CLK2 Output Buffered Clock output 2. 3 CLK1 Power Buffered Clock output 1 4 GND Power Connect to ground. 5 CLK3 Output Buffered Clock output 3 6 VDD Power Power supply. Connect to 3.3 V. 7 CLK4 Output Buffered Clock output 4. 8 CLKOUT Output Buffered output. Internall feedback on this pin. IDT™ / ICS™ 3.3 VOLT ZERO DELAY LOW SKEW BUFFER Pin Description 2 ICS2305 REV F 051310 ICS2305 3.3 VOLT ZERO DELAY LOW SKEW BUFFER ZERO DELAY BUFFER External Components The ICS2305 requires a minimum number of external components for proper operation. Decoupling capacitors of 0.01 mF should be connected between VDD and GND on pins 4 and 5, and VDD and GND on pins 13 and 12, as close to the device as possible. A series termination resistor of 33Ω may be used to each clock output pin to reduce reflections. Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS2305. These ratings, which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical parameters are guaranteed only over the recommended operating temperature range. Item Rating Supply Voltage, VDD 7V All Inputs and Outputs -0.5 V to VDD+0.5 V CLKIN and FBIN inputs -0.5 V to 5.5 V Electrostatic Discharge (HBM) 2000 V Ambient Operating Temperature (Commercial) 0 to +70° C Ambient Operating Temperature (Industrial) -40 to +85° C Storage Temperature -65 to +150° C Junction Temperature 150° C Soldering Temperature 260° C Recommended Operation Conditions Parameter Min. Ambient Operating Temperature (Industrial) Ambient Operating Temperature (Commercial) Power Supply Voltage (measured in respect to GND) IDT™ / ICS™ 3.3 VOLT ZERO DELAY LOW SKEW BUFFER 3 Typ. Max. Units -40 +85 °C 0 +70 °C +3.0 +3.6 V ICS2305 REV F 051310 ICS2305 3.3 VOLT ZERO DELAY LOW SKEW BUFFER ZERO DELAY BUFFER DC Electrical Characteristics ICS2305M-XX, VDD = 3.3 V ±10%, Ambient Temperature -40 to +85° C(Industrial), (0-70° C Commercial) Parameter Symbol Conditions Min. Operating Voltage VDD 3.0 Input High Voltage VIH 2 Input Low Voltage VIL Input Low Current IIL Input High Current IIH Typ. Max. Units 3.6 V V 0.8 V VIN = 0V 50 µA VIN = VDD 100 µA Output High Voltage VOH IOH = -12 mA Output Low Voltage VOL IOL = 12 mA 0.4 V Operating Supply Current IDD No Load 32 mA CLKIN = 0, Note 1 12 µA Power Down Supply Current Short Circuit Current IOS Each output Input Capacitance CIN CLKIN 2.4 V ±50 mA 5 pF Note 1: When there is no clock signal present at CLKIN, the ICS2305 will enter power down mode. The PLL is stopped and the outputs are tri-state. AC Electrical Characteristics ICS2305M-1, VDD=3.3 V ±10%, Ambient temperature -40 to +85° C(Industrial), (0-70° C Commercial) Parameter Symbol Output Clock Frequency fIN Output Clock Frequency Conditions Min. Typ. Max. Units 10 pF load 10 133 MHz 30 pF load 10 100 MHz Output Rise Time tOR 0.8 to 2.0 V, outputs loaded 2.5 ns Output Fall Time tOF 2.0 to 0.8 V, outputs loaded 2.5 ns Output Clock Duty Cycle tDC measured at 1.4V, Fout=66.67 MHz 40 50 60 % Output Clock Duty Cycle tDC measured at 1.4V, Fout=50 MHz 45 50 55 % Device to Device Skew rising edges at VDD/2 700 ps Output to Output Skew rising edges at VDD/2 250 ps Input to Output Skew rising edges at VDD/2 ±350 ps Cycle to Cycle Jitter measured at 66.67M, outputs loaded 200 ps PLL Lock Time Note 2 1.0 ms Note 2: With VDD at a steady rate and valid input at CLKIN. IDT™ / ICS™ 3.3 VOLT ZERO DELAY LOW SKEW BUFFER 4 ICS2305 REV F 051310 ICS2305 3.3 VOLT ZERO DELAY LOW SKEW BUFFER ZERO DELAY BUFFER ICS2305M-1H, VDD=3.3 V ±10%, Ambient temperature -40 to +85° C(Industrial), (0-70° C Commercial), Parameter Symbol Output Clock Frequency fIN Output Clock Frequency Conditions Min. Typ. Max. Units 10 pF load 10 133 MHz 30 pF load 10 100 MHz Output Rise Time tOR 0.8 to 2.0 V, outputs loaded 1.5 ns Output Fall Time tOF 2.0 to 0.8 V, outputs loaded 1.5 ns Output Clock Duty Cycle tDC measured at 1.4V, Fout=66.67 MHz 40 50 60 % Output Clock Duty Cycle tDC measured at 1.4V, Fout=50 MHz 45 50 55 % Device to Device Skew rising edges at VDD/2 700 ps Output to Output Skew rising edges at VDD/2 250 ps Input to Output Skew rising edges at VDD/2 ±350 ps Cycle to Cycle Jitter measured at 66.67M, outputs loaded 200 ps PLL Lock Time Note 3 1.0 ms Note 3: With VDD at a steady rate and valid input at CLKIN Thermal Characteristics Parameter Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case IDT™ / ICS™ 3.3 VOLT ZERO DELAY LOW SKEW BUFFER Symbol Conditions Min. Typ. Max. Units θJA Still air 120 ° C/W θJA 1 m/s air flow 115 ° C/W θJA 3 m/s air flow 105 ° C/W 58 ° C/W θJC 5 ICS2305 REV F 051310 ICS2305 3.3 VOLT ZERO DELAY LOW SKEW BUFFER ZERO DELAY BUFFER Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Narrow Body) Package dimensions are kept current with JEDEC Publication No. 95 8 Millimeters Symbol E Min A A1 B C D E e H h L α H INDEX AREA 1 2 D A Inches Max Min 1.35 1.75 0.10 0.25 0.33 0.51 0.19 0.25 4.80 5.00 3.80 4.00 1.27 BASIC 5.80 6.20 0.25 0.50 0.40 1.27 0° 8° Max .0532 .0688 .0040 .0098 .013 .020 .0075 .0098 .1890 .1968 .1497 .1574 0.050 BASIC .2284 .2440 .010 .020 .016 .050 0° 8° h x 45 A1 C -Ce B SEATING PLANE L .10 (.004) IDT™ / ICS™ 3.3 VOLT ZERO DELAY LOW SKEW BUFFER C 6 ICS2305 REV F 051310 ICS2305 3.3 VOLT ZERO DELAY LOW SKEW BUFFER ZERO DELAY BUFFER Ordering Information Part / Order Number Marking Shipping Packaging Package Temperature 2305MI-1LF 2305MI-1LFT 2305MI-1HLF 2305MI-1HLFT 2305M-1LF 2305M-1LFT 2305M-1HLF 2305M-1HLFT 2305MI1L 2305MI1L 2305I1HL 2305I1HL 2305M1LF 2305M1LF 2305M1HL 2305M1HL Tubes Tape and Reel Tubes Tape and Reel Tubes Tape and Reel Tubes Tape and Reel 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC -40 to +85° C -40 to +85° C -40 to +85° C -40 to +85° C 0 to +70° C 0 to +70° C 0 to +70° C 0 to +70° C “LF” denotes Pb (lead free) package. While the information presented herein has been checked for both accuracy and reliability, IDT assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. IDT™ / ICS™ 3.3 VOLT ZERO DELAY LOW SKEW BUFFER 7 ICS2305 REV F 051310 ICS2305 3.3 VOLT ZERO DELAY LOW SKEW BUFFER ZERO DELAY BUFFER Revision History Rev. Originator Date Description of Change A P. Griffith 12/01/04 New device/datasheet; Preliminary. B P. Griffith 12/27/04 Made corrections to IDD, IDDP, input capacitance, duty cycle and jitter specs/test conditions. Removed reference to table 2 in output clock frequency test conditions. Removed abslolute and cycle-to-cycle jitter specs for 15 pF load. Added duty cycle spec for Fout=50 MHz. Release from Preliminary to Final. C P. Griffith 1/25/05 Made corrections to test conditions of output rise time, fall-time, duty cycle and cycle-to-cycle jitter. D J. Sarma 2/25/05 Added LF packing info. E 08/17/09 Added EOL note per PDN U-09-01. F 05/13/10 Removed EOL note and non-green orderable parts. IDT™ / ICS™ 3.3 VOLT ZERO DELAY LOW SKEW BUFFER 8 ICS2305 REV F 051310 ICS2305 3.3 VOLT ZERO DELAY LOW SKEW BUFFER ZERO DELAY BUFFER Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales For Tech Support 800-345-7015 408-284-8200 Fax: 408-284-2775 www.idt.com/go/clockhelp Corporate Headquarters Integrated Device Technology, Inc. www.idt.com © 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA