IDT23S05 3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES IDT23S05 3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM COMPATIBLE FEATURES: DESCRIPTION: • • • • • • • • • • • • • The IDT23S05 is a high-speed phase-lock loop (PLL) clock buffer, designed to address high-speed clock distribution applications. The zero delay is achieved by aligning the phase between the incoming clock and the output clock, operable within the range of 10 to 133MHz. The IDT23S05 is an 8-pin version of the IDT23S09. IDT23S05 accepts one reference input, and drives out five low skew clocks. The -1H version of this device operates up to 133MHz frequency and has a higher drive than the -1 device. All parts have on-chip PLLs which lock to an input clock on the REF pin. The PLL feedback is on-chip and is obtained from the CLKOUT pad. In the absence of an input clock, the IDT23S05 enters power down. In this mode, the device will draw less than 12µA for Commercial Temperature range and less than 25µA for Industrial temperature range, the outputs are tri-stated, and the PLL is not running, resulting in a significant reduction of power. The IDT23S05 is characterized for both Industrial and Commercial operation. Phase-Lock Loop Clock Distribution 10MHz to 133MHz operating frequency Distributes one clock input to one bank of five outputs Zero Input-Output Delay Output Skew < 250ps Low jitter <200 ps cycle-to-cycle IDT23S05-1 for Standard Drive IDT23S05-1H for High Drive No external RC network required Operates at 3.3V VDD Power down mode Spread spectrum compatible Available in SOIC package FUNCTIONAL BLOCK DIAGRAM 8 CLKOUT REF 1 3 PLL CLK1 Control Logic 2 5 7 CLK2 CLK3 CLK4 The IDT logo is a registered trademark of Integrated Device Technology, Inc. COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES AUGUST 2010 1 c 2010 Integrated Device Technology, Inc. DSC 6381/7 IDT23S05 3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION Symbol REF 1 8 CLKOUT CLK2 2 7 CLK4 CLK1 3 6 VDD GND 4 5 CLK3 Rating Max. Unit VDD Supply Voltage Range –0.5 to +4.6 V VI (2) Input Voltage Range (REF) –0.5 to +5.5 V VI Input Voltage Range –0.5 to V (except REF) VDD+0.5 IIK (VI < 0) Input Clamp Current –50 mA IO (VO = 0 to VDD) Continuous Output Current ±50 mA VDD or GND Continuous Current ±100 mA TA = 55°C Maximum Power Dissipation 0.7 W TSTG Storage Temperature Range –65 to +150 °C Operating Commercial Temperature 0 to +70 °C Temperature Range -40 to +85 °C (in still air)(3) SOIC TOP VIEW Operating Industrial Temperature Temperature Range NOTES: 1. Stresses greater than those listed under ABSOLUTE 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. 2. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 3. The maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 750 mils. APPLICATIONS: • • • • • SDRAM Telecom Datacom PC Motherboards/Workstations Critical Path Delay Designs PIN DESCRIPTION Pin Name REF (1) CLK2(2) CLK1 (2) GND CLK3 (2) VDD CLK4 (2) CLKOUT (2) Pin Number Type Functional Description 1 IN Input reference clock, 5 Volt tolerant input 2 Out Output clock 3 Out Output clock 4 Ground Ground 5 Out Output clock 6 PWR 3.3V Supply 7 Out Output clock 8 Out Output clock, internal feedback on this pin NOTES: 1. Weak pull down. 2. Weak pull down on all outputs. 2 IDT23S05 3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES OPERATING CONDITIONS - COMMERCIAL Symbol Parameter Min. Max. Unit 3 3.6 V Operating Temperature (Ambient Temperature) 0 70 °C Load Capacitance < 100MHz — 30 pF Load Capacitance 100MHz - 133MHz — 10 Input Capacitance — 7 VDD Supply Voltage TA CL CIN pF DC ELECTRICAL CHARACTERISTICS - COMMERCIAL Symbol Parameter Conditions Min. Max. Unit VIL Input LOW Voltage Level — 0.8 V VIH Input HIGH Voltage Level 2 — V IIL Input LOW Current VIN = 0V — 50 µA IIH Input HIGH Current VIN = VDD — 100 µA VOL Output LOW Voltage Standard Drive IOL = 8mA — 0.4 V High Drive IOL = 12mA (-1H) VOH Output HIGH Voltage Standard Drive IOH = -8mA 2.4 — V High Drive IOH = -12mA (-1H) IDD_PD Power Down Current REF = 0MHz — 12 µA Supply Current Unloaded Outputs at 66.66MHz — 32 mA IDD (1,2) SWITCHING CHARACTERISTICS (23S05-1) - COMMERCIAL Symbol t1 Parameter Conditions Min. Typ. Max. Unit 10 — 133 MHz Output Frequency 10pF Load 30pF Load 10 — 100 Duty Cycle = t2 ÷ t1 Measured at 1.4V, FOUT = 66.66MHz 40 50 60 % t3 Rise Time Measured between 0.8V and 2V — — 2.5 ns t4 Fall Time Measured between 0.8V and 2V — — 2.5 ns t5 Output to Output Skew All outputs equally loaded — — 250 ps t6 Delay, REF Rising Edge to CLKOUT Rising Edge Measured at VDD/2 — 0 ±350 ps t7 Device-to-Device Skew Measured at VDD/2 on the CLKOUT pins of devices — 0 700 ps tJ Cycle-to-Cycle Jitter, pk - pk Measured at 66.66MHz, loaded outputs — — 200 ps PLL Lock Time Stable power supply, valid clock presented on REF pin — — 1 ms tLOCK NOTES: 1. REF Input has a threshold voltage of VDD/2. 2. All parameters specified with loaded outputs. 3 IDT23S05 3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES (1,2) SWITCHING CHARACTERISTICS (23S05-1H) - COMMERCIAL Symbol Min. Typ. Max. Unit Output Frequency 10pF Load 30pF Load 10 10 — — 133 100 MHz Duty Cycle = t2 ÷ t1 Measured at 1.4V, FOUT = 66.66MHz 40 50 60 % Duty Cycle = t2 ÷ t1 Measured at 1.4V, FOUT <50MHz 45 50 55 % t3 Rise Time Measured between 0.8V and 2V — — 1.5 ns t4 Fall Time Measured between 0.8V and 2V — — 1.5 ns t5 Output to Output Skew All outputs equally loaded — — 250 ps t6 Delay, REF Rising Edge to CLKOUT Rising Edge Measured at VDD/2 — 0 ±350 ps t7 Device-to-Device Skew Measured at VDD/2 on the CLKOUT pins of devices — 0 700 ps t8 Output Slew Rate Measured between 0.8V and 2V using Test Circuit #2 1 — — V/ns tJ Cycle-to-Cycle Jitter, pk - pk Measured at 66.66MHz, loaded outputs — — 200 ps PLL Lock Time Stable power supply, valid clock presented on REF pin — — 1 ms t1 tLOCK Parameter Conditions NOTES: 1. REF Input has a threshold voltage of VDD/2. 2. All parameters specified with loaded outputs. OPERATING CONDITIONS - INDUSTRIAL Symbol Parameter Min. Max. Unit VDD Supply Voltage 3 3.6 V TA Operating Temperature (Ambient Temperature) -40 +85 °C CL Load Capacitance < 100MHz — 30 pF Load Capacitance 100MHz - 133MHz — 10 CIN Input Capacitance — 7 pF DC ELECTRICAL CHARACTERISTICS - INDUSTRIAL Symbol Parameter Conditions VIL Input LOW Voltage Level VIH Input HIGH Voltage Level IIL Input LOW Current VIN = 0V IIH Input HIGH Current VIN = VDD VOL Output LOW Voltage Standard Drive IOL = 8mA High Drive IOL = 12mA (-1H) Standard Drive IOH = -8mA High Drive IOH = -12mA (-1H) VOH IDD_PD IDD Output HIGH Voltage Min. Max. Unit — 0.8 V 2 — V — 50 µA — 100 µA — 0.4 V 2.4 — V Power Down Current REF = 0MHz — 25 µA Supply Current Unloaded Outputs at 66.66MHz — 35 mA 4 IDT23S05 3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES SWITCHING CHARACTERISTICS (23S05-1) - INDUSTRIAL Symbol t1 Parameter Output Frequency (1,2) Conditions Min. Typ. Max. Unit 10pF Load 10 — 133 MHz 30pF Load 10 — 100 Duty Cycle = t2 ÷ t1 Measured at 1.4V, FOUT = 66.66MHz 40 50 60 % t3 Rise Time Measured between 0.8V and 2V — — 2.5 ns t4 Fall Time Measured between 0.8V and 2V — — 2.5 ns t5 Output to Output Skew All outputs equally loaded — — 250 ps t6 Delay, REF Rising Edge to CLKOUT Rising Edge Measured at VDD/2 — 0 ±350 ps t7 Device-to-Device Skew Measured at VDD/2 on the CLKOUT pins of devices — 0 700 ps tJ tLOCK Cycle-to-Cycle Jitter, pk - pk Measured at 66.66MHz, loaded outputs — — 200 ps PLL Lock Time Stable power supply, valid clock presented on REF pin — — 1 ms NOTES: 1. REF Input has a threshold voltage of VDD/2. 2. All parameters specified with loaded outputs. SWITCHING CHARACTERISTICS (23S05-1H) - INDUSTRIAL Symbol t1 Parameter Conditions (1,2) Min. Typ. Max. Unit Output Frequency 10pF Load 30pF Load 10 10 — — 133 100 MHz Duty Cycle = t2 ÷ t1 Measured at 1.4V, FOUT = 66.66MHz 40 50 60 % Duty Cycle = t2 ÷ t1 Measured at 1.4V, FOUT <50MHz 45 50 55 % t3 Rise Time Measured between 0.8V and 2V — — 1.5 ns t4 Fall Time Measured between 0.8V and 2V — — 1.5 ns t5 Output to Output Skew All outputs equally loaded — — 250 ps t6 Delay, REF Rising Edge to CLKOUT Rising Edge Measured at VDD/2 — 0 ±350 ps t7 Device-to-Device Skew Measured at VDD/2 on the CLKOUT pins of devices — 0 700 ps t8 Output Slew Rate Measured between 0.8V and 2V using Test Circuit #2 1 — — V/ns tJ Cycle-to-Cycle Jitter, pk - pk Measured at 66.66MHz, loaded outputs — — 200 ps PLL Lock Time Stable power supply, valid clock presented on REF pin — — 1 ms tLOCK NOTES: 1. REF Input has a threshold voltage of VDD/2. 2. All parameters specified with loaded outputs. 5 IDT23S05 3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES ZERO DELAY AND SKEW CONTROL All outputs should be uniformly loaded in order to achieve Zero I/O Delay. Since the CLKOUT pin is the internal feedback for the PLL, its relative loading can affect and adjust the input/output delay. For designs utilizing zero I/O Delay, all outputs including CLKOUT must be equally loaded. Even if the output is not used, it must have a capacitive load equal to that on the other outputs in order to obtain true zero I/O Delay. If I/O Delay adjustments are needed, use the Output Load Difference diagram to calculate loading differences between the CLKOUT pin and other outputs. For zero output-to-output skew, all outputs must be loaded equally. SPREAD SPECTRUM COMPATIBLE Many systems being designed now use a technology called Spread Spectrum Frequency Timing Generation. This product is designed not to filter off the Spread Spectrum feature of the reference input, assuming it exists. When a zero delay buffer is not designed to pass the Spread Spectrum feature through, the result is a significant amount of tracking skew, which may cause problems in systems requiring synchronization. 6 IDT23S05 3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES SWITCHING WAVEFORMS t1 Output 1.4V t2 1.4V 1.4V 1.4V 1.4V Output t5 Output to Output Skew Duty Cycle Timing Output 0.8V 2V 2V 3.3V 0.8V VDD/2 REF 0V t4 t3 VDD/2 Output t6 Input to Output Propagation Delay All Outputs Rise/Fall Time CLKOUT Device 1 CLKOUT Device 2 VDD/2 VDD/2 t7 Device to Device Skew TEST CIRCUITS VDD 0.1µF CLKOUT OUTPUTS VDD 0.1µF 1KΩ CLKOUT OUTPUTS CLOAD 1KΩ 10pF VDD VDD 0.1µF 0.1µF GND GND GND GND Test Circuit 2 (t8, Output Slew Rate On -1H Devices) Test Circuit 1 (all Parameters Except t8) 7 IDT23S05 3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES 150 mil (N arrow Body) SOIC SYMBOL A A1 B C D E e H h L N a In Millimeters COMMON DIMENSIONS MIN MAX 1.35 1.75 0.10 0.25 0.33 0.51 0.19 0.25 SEE VARIATIONS 3.80 4.00 1.27 BASIC 5.80 6.20 0.25 0.50 0.40 1.27 SEE VARIATIONS 0° 8° In Inches COMMON DIMENSIONS MIN MAX .0532 .0688 .0040 .0098 .013 .020 .0075 .0098 SEE VARIATIONS .1497 .1574 0.050 BASIC .2284 .2440 .010 .020 .016 .050 SEE VARIATIONS 0° 8° VARIATIONS N 8 D mm. MIN 4.80 D (inch) MAX 5.00 Reference Doc.: JEDEC Publication 95, MS-012 8 MIN .1890 MAX .1968 IDT23S05 3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES ORDERING INFORMATION IDT XXXXX Device Type XX Package X Process Blank I Commercial (0oC to +70oC) Industrial (-40oC to +85oC) DC DCG Small Outline SOIC - Green 23S05-1 23S05-1H Zero Delay Clock Buffer with High Drive, Spread Spectrum Compatible Part / Order Number Shipping Packaging Package Temperature 23S05-1DCG 23S05-1DCG8 23S05-1DCGI 23S05-1DCGI8 23S05-1HDCG 23S05-1HDCG8 23S05-1HDCGI 23S05-1HDCGI8 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 0° to +70° C 0° to +70° C -40° to +85°C -40° to +85°C 0° to +70° C 0° to +70° C -40° to +85°C -40° to +85°C CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138 for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 9 for Tech Support: [email protected]