ICS514M

DATASHEET ICS514 LOCO™ PLL CLOCK GENERATOR Description Features The ICS514 LOCOTM is the most cost effective way to generate a high-quality, high-frequency clock output from a 14.31818 MHz crystal or clock input. The name LOCO stands for Low Cost Oscillator, as it is designed to replace crystal oscillators in most electronic systems. Using Phase-Locked Loop (PLL) techniques, the device uses a standard, inexpensive crystal to produce output clocks up to 66.66 MHz. • • • • • • • • • • • • • • Stored in the chip’s ROM is the ability to generate five different output frequencies, allowing one chip to work in different speed processor systems. The device also has a power-down mode that turns off the clock outputs when both select pins are low. In this mode, the internal PLL is not running. Packaged as 8-pin SOIC or die Available in Pb (lead) free package IDT’s lowest cost PLL clock plus reference Produces common computer frequencies Input crystal frequency typically 14.3182 MHz Output clock frequencies up to 66.66 MHz from a 14.3182 MHz crystal or input clock Low jitter of 50 ps (one sigma) Compatible with all popular CPUs Duty cycle of 45/55 Custom frequencies available Operating voltage of 3.3 V to 5.5 V Power-down mode turns off chip 25 mA drive capability at TTL levels Advanced, low-power CMOS process NOTE: EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Block Diagram VDD S1:0 X1/ICLK 14.31818 MHz crystal or clock input X2 2 PLL Clock Synthesis and Control Circuitry Crystal Oscillator REF GND Optional crystal capacitors IDT™ / ICS™ LOCO™ PLL CLOCK GENERATOR CLK 1 ICS514 REV F 092209 ICS514 LOCO™ PLL CLOCK GENERATOR CLOCK MULTIPLIER Pin Assignment Clock Decoding Table (MHz) with 14.31818 MHz Crystal or Clock Input X1/ I CLK 1 8 X2 S1 S0 CLK Multiplier Accuracy VDD 2 7 S1 0 0 Power-down CLK — — GND 3 6 S0 REF 5 4 CLK 8 - p i n ( 1 5 0 mi l ) S OI C 0 1 25 1.746 1 ppm M 0 33.33 2.328 0.008% M 1 40 2.794 1 ppm 1 0 50 3.492 1 ppm 1 1 66.66 4.656 0.008% 0 = connect directly to ground 1 = connect directly to VDD M = leave unconnected (floating) CLK and REF stop low in power-down state Pin Descriptions Pin Number Pin Name Pin Type Pin Description 1 XI/ICLK Input Crystal connection to a 14.31818 MHz crystal or clock input. 2 VDD Power Connect to +3.3 V or +5 V. 3 GND Power Connect to ground. 4 REF Output Reference 14.31818 MHz crystal oscillator buffered clock output. 5 CLK Output Clock output per table above. 6 S0 Tri-level Input Select 0 for output clock. Connect to GND or VDD or float. See table above. 7 S1 Tri-level Input Select 1 for output clock. Connect to GND or VDD or float. See table above. 8 X2 Output Crystal connection to a 14.31818 MHz crystal. Leave unconnected for clock input. Notes: 1. With S1 = S0 = 0, the internal PLL is turned off and the CLK outputs stops low. The crystal oscillator and REF output are still active. 2. With a clock input, the phase relationship between the input and the output clocks can change each time the device is powered on. If a fixed phase relationship is required, use the ICS571 or other zero delay multipliers. IDT™ / ICS™ LOCO™ PLL CLOCK GENERATOR 2 ICS514 REV F 092209 ICS514 LOCO™ PLL CLOCK GENERATOR CLOCK MULTIPLIER External Components X2 to ground. These capacitors are used to adjust the stray capacitance of the board to match the nominally required crystal load capacitance. Because load capacitance can only be increased in this trimming process, it is important to keep stray capacitance to a minimum by using very short PCB traces (and no vias) between the crystal and device. Crystal capacitors, if needed, must be connected from each of the pins X1 and X2 to ground. Decoupling Capacitor As with any high-performance mixed-signal IC, the ICS514 must be isolated from system power supply noise to perform optimally. A decoupling capacitor of 0.01µF must be connected between VDD and the GND. It must be connected close to the ICS514 to minimize lead inductance. No external power supply filtering is required for the ICS514. The value (in pF) of these crystal caps should equal (CL -12 pF)*2. In this equation, CL= crystal load capacitance in pF. Example: For a crystal with a 16 pF load capacitance, each crystal capacitor would be 8 pF [(16-12) x 2 = 8]. Series Termination Resistor A 33Ω terminating resistor can be used next to the CLK and REF pins for trace lengths over one inch. Crystal Load Capacitors The total on-chip capacitance is approximately 12 pF. A parallel resonant, fundamental mode crystal should be used. The device crystal connections should include pads for small capacitors from X1 to ground and from Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS514. 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 (referenced to GND) -0.5 V to VDD+0.5 V Ambient Operating Temperature 0 to +70° C Storage Temperature -65 to +150° C Soldering Temperature 260° C IDT™ / ICS™ LOCO™ PLL CLOCK GENERATOR 3 ICS514 REV F 092209 ICS514 LOCO™ PLL CLOCK GENERATOR CLOCK MULTIPLIER Recommended Operation Conditions Parameter Min. Max. Units 0 +70 °C +3.0 +5.5 V Ambient Operating Temperature Power Supply Voltage (measured in respect to GND) Typ. DC Electrical Characteristics VDD=5.0 V ±5% , Ambient temperature 0 to +70° C, unless stated otherwise Parameter Symbol Operating Voltage Conditions Min. VDD Max. Units 5.5 V 3.0 Input High Voltage, ICLK only VIH ICLK (pin 1) Input Low Voltage, ICLK only VIL ICLK (pin 1) Input High Voltage VIH S0 Input Low Voltage VIL S0 Input High Voltage VIH S1 Input Mid Voltage VIM S1 Input Low Voltage VIL S1 Output High Voltage VOH IOH = -25 mA Output Low Voltage VOL IOL = 25 mA IDD Operating Supply Current Typ. (VDD/2)+1 VDD/2 VDD/2 V (VDD/2)-1 V 2.0 V 0.8 V VDD-0.5 V VDD/2 V 0.5 V 2.4 V 0.4 V No load, 66.66 MHz S1=S0=0 20 mA 1.5 mA CLK output +70 mA On-Chip Pull-up Resistor Pin 6 270 kΩ Input Capacitance, S1, S0 Pins 6, 7 4 pF IDD Power-down Supply Current, 3.3 V Short Circuit Current AC Electrical Characteristics VDD = 5.0 V ±5%, Ambient Temperature 0 to +70° C, unless stated otherwise Parameter Symbol Conditions Min. Typ. Max. Units Input Frequency, crystal input FIN 5 14.31818 27 MHz Input Frequency, clock input FIN 2 14.31818 50 MHz Output Frequency, VDD = 4.5 to 5.5 V FOUT 14 66.66 140 MHz Output Frequency, VDD = 3.0 to 3.6 V FOUT 14 66.66 100 MHz Output Clock Rise Time tOR 0.8 to 2.0 V 1 ns Output Clock Fall Time tOF 2.0 to 8.0 V 1 ns Output Clock Duty Cycle tOD 1.5 V,up to 140 MHz IDT™ / ICS™ LOCO™ PLL CLOCK GENERATOR 4 45 49-51 ICS514 55 % REV F 092209 ICS514 LOCO™ PLL CLOCK GENERATOR Parameter CLOCK MULTIPLIER Symbol Power-up time, from PD to outputs stable Power-down time, from running to PD state Absolute Clock Period Jitter tja One Sigma Clock Period Jitter tjs Conditions Min. Deviation from mean Typ. Max. Units 5 10 ms 50 ns +160 ps 50 ps Thermal Characteristics Parameter Symbol Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case Typ. Max. Units Still air 150 ° C/W θJA 1 m/s air flow 140 ° C/W θJA 3 m/s air flow 120 ° C/W 40 ° C/W θJC Marking Diagram (Pb free) 5 8 ICS514M YYWW ###### 1 Min. θJA Marking Diagram 8 Conditions 5 514MLF YYWW ###### 1 4 4 Notes: 1. ###### is the lot code. 2. YYWW is the last two digits of the year and the week. 3. “LF” designates Pb (lead) fee package. IDT™ / ICS™ LOCO™ PLL CLOCK GENERATOR 5 ICS514 REV F 092209 ICS514 LOCO™ PLL CLOCK GENERATOR CLOCK MULTIPLIER Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Narrow Body) Package dimensions are kept current with JEDEC Publication No. 95 Millimeters Inches 8 Symbol E A A1 B C D E e H h L α H INDEX AREA 1 2 D Min Max 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° A Min 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) C Ordering Information Part / Order Number Marking Shipping Packaging Package 514M* 514MT* 514MLF 514MLFT ICS514M ICS514M 514MLF 514MLF Tubes Tape and Reel Tubes Tape and Reel 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC Temperature 0 to +70° 0 to +70° 0 to +70° 0 to +70° C C C C *NOTE: EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 “LF” denotes Pb (lead) free package. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (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™ LOCO™ PLL CLOCK GENERATOR 6 ICS514 REV F 092209 ICS514 LOCO™ PLL CLOCK GENERATOR CLOCK MULTIPLIER 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