3 CY2303 Phase-Aligned Clock Multiplier Features Benefits • 3-multiplier configuration 1x, 2x, 4x Ref • Single phase-locked loop architecture 10 MHz to 166.67 MHz operating range (reference input from 10 MHz to 41.67 MHz) • Phase Alignment All outputs will have a consistent phase relationship with each other and the reference input • Low jitter, high accuracy outputs Meets critical timing requirements • Output enable pin Enables design flexibility and lower power consumption • 3.3V operation Supports industry standard design platforms • 5V Tolerant input Allows flexibility on Reference input • Sophisticated internal loop filter Alleviates the need for external components • 8-pin 150-mil SOIC package Industry standard packaging saves on board space • Commercial and Industrial Temperature available Suitable for wide spectrum of applications Selector Guide Part Number Outputs Input Frequency Range Output Frequency Range Specifics CY2303SC 3 10 MHz–41.67 MHz 10 MHz–166.67 MHz Commercial Temperature CY2303SI 3 10 MHz–41.67 MHz 10 MHz–166.67 MHz Industrial Temperature Functional Description The CY2303 is a 3 output 3.3V phase-aligned system clock designed to distribute high-speed clocks in PC, workstation, datacom, telecom, and other high-performance applications. The part allows user to obtain 1x, 2x, and 4x Ref output frequencies on respective output pins. The CY2303 has an on-chip PLL which locks to an input clock presented on the REFIN pin. The PLL feedback is internally connected to the REF output. The input-to-output skew is guaranteed to be less than ±200 ps, and output-to-output skew is guaranteed to be less than 200 ps. Multiple CY2303 devices can accept the same input clock and distribute it in a system. In this case, the skew between the outputs of two devices is guaranteed to be less than 400 ps. The CY2303 is available in commercial and industrial temperature ranges. Block Diagram Pin Configuration 8-pin SOIC Top View FBK x1 REFIN REF GND REFIN N/C REF PLL x2 x4 1 2 3 4 8 7 6 5 OE VDD REFx4 REFx2 REFx2 REFx4 OE Cypress Semiconductor Corporation Document #: 38-07249 Rev. ** • 3901 North First Street • San Jose • CA 95134 • 408-943-2600 Revised September 27, 2001 CY2303 Pin Description Signal[1] Pin Description 1 REF REF output (1x Reference input) 2 GND Ground 3 REFIN Input reference frequency, 5V tolerant input 4 N/C No Connect 5 REFx2 2x Reference input 6 REFx4 4x Reference input 7 VDD 3.3V Supply 8 OE Output Enable (weak pull-up) Maximum Ratings Storage Temperature ................................. –65°C to +150°C Supply Voltage to Ground Potential ............... –0.5V to +7.0V DC Input Voltage (Except Ref)...............–0.5V to VDD + 0.5V Junction Temperature.................................................. 150°C Static Discharge Voltage (per MIL-STD-883, Method 3015) ............................. >2000V DC Input Voltage REFIN ........................................–0.5 to 7V Operating Conditions for CY2303SC Commercial Temperature Devices Parameter Description Min. Max. Unit 3.0 3.6 V VDD Supply Voltage TA Operating Temperature (Ambient Temperature) 70 °C CL Load Capacitance, Fout < 133.33 MHz 18 pF Load Capacitance, 133.33 MHz < Fout < 166.67 MHz 12 pF Input Capacitance 7 pF Max. Unit 0.8 V VIN = 0V 100 µA VIN = VDD 50 µA CIN 0 Electrical Characteristics for CY2303SC Commercial Temperature Devices Parameter Description VIL Input LOW Voltage VIH Input HIGH Voltage IIL Input LOW Current IIH Input HIGH Current Test Conditions Min. 2.0 [2] VOL Output LOW Voltage VOH Output HIGH Voltage[2] IDD Supply Current IOL = 8 mA IOH = –8 mA V 0.4 2.4 V V Unloaded outputs, REFIN = 41.67 MHz 45 mA Unloaded outputs, REFIN = 25 MHz 32 mA Unloaded outputs, REFIN = 10 MHz 18 mA Notes: 1. Weak pull-down on all outputs. 2. Parameter is guaranteed by design and characterization. It is not 100% tested in production. Document #: 38-07249 Rev. ** Page 2 of 7 CY2303 Switching Characteristics for CY2303SC Commercial Temperature Devices Parameter 1/t1 Name Test Conditions Output Frequency Min. 18-pF load Typ. 10 12-pF load [3] = t2 ÷ t1 40 50 Unit 133.33 MHz 166.67 MHz 60 % t3 Rise Time[3] Measured between 0.8V and 2.0V 1.20 ns t4 Fall Time[3] Measured between 0.8V and 2.0V 1.20 ns t5 Output to Output Skew on rising edges[3] All outputs equally loaded Measured at VDD/2 200 ps t6 Delay, REFIN Rising Edge to REF Rising Edge[3] Measured at VDD/2 from REFIN to any output ±200 ps t7 Device to Device Skew[3] Measured at VDD/2 on the REF pin of the device (pin 1) 400 ps tJ Period Jitter[3] Measured at Fout < 133.33 MHz, loaded outputs, 18-pF load ±175 ps tLOCK PLL Lock Time[3] Stable power supply, valid clocks presented on REFIN 1.0 ms Duty Cycle Measured at VDD/2 Max. Operating Conditions for CY2303SI Industrial Temperature Devices Parameter Description Min. Max. Unit VDD Supply Voltage 3.0 3.6 V TA Operating Temperature (Ambient Temperature) –40 85 °C CL Load Capacitance, Fout <133.33 MHz 15 pF Load Capacitance, 133.33 MHz < Fout < 166.67 MHz, 10 pF Input Capacitance 7 pF Max. Unit 0.8 V VIN = 0V 100 µA CIN Electrical Characteristics for CY2303SI Industrial Temperature Devices Parameter Description VIL Input LOW Voltage VIH Input HIGH Voltage IIL Input LOW Current IIH Input HIGH Current VOL Output LOW Voltage Test Conditions Min. 2.0 V VIN = VDD 50 µA [2] IOL = 8 mA 0.4 V [2] IOH = –8 mA Unloaded outputs, REFIN = 41.67 MHz 48 mA Unloaded outputs, REFIN = 25 MHz 35 mA Unloaded outputs, REFIN = 10 MHz 20 mA VOH Output HIGH Voltage IDD Supply Current 2.4 V Note: 3. All parameters are specified with loaded outputs. Document #: 38-07249 Rev. ** Page 3 of 7 CY2303 Switching Characteristics for CY2303SI Industrial Temperature Devices Parameter Name Test Conditions Output Frequency 1/t1 15-pF load Min. Typ. 10 10-pF load [3] = t2 ÷ t1 40 50 Unit 133.33 MHz 166.67 MHz 60 % t3 Rise Time[3] Measured between 0.8V and 2.0V 1.20 ns t4 Fall Time[3] Measured between 0.8V and 2.0V 1.20 ns t5 Output to Output Skew on rising edges[3] All outputs equally loaded Measured at VDD/2 200 ps t6 Delay, REFIN Rising Edge to REF Rising Edge[3] Measured at VDD/2 from REFIN to any output ±200 ps t7 Device to Device Skew[3] Measured at VDD/2 on the REF pin of the device (pin 1) 400 ps tJ Period Jitter[3] Measured at Fout < 133.33 MHz, loaded outputs, 15-pF load ±175 ps tLOCK PLL Lock Time[3] Stable power supply, valid clocks presented on REFIN 1.0 ms Duty Cycle Measured at VDD/2 Max. Switching Waveforms Duty Cycle Timing t1 t2 VDD/2 All Outputs Rise/Fall Time OUTPUT 2.0V 0.8V 2.0V 0.8V t3 3.3V 0V t4 Output-Output Skew OUTPUT VDD/2 VDD/2 OUTPUT t5 Document #: 38-07249 Rev. ** Page 4 of 7 CY2303 Switching Waveforms Input-Output Propagation Delay INPUT VDD/2 VDD/2 FBK t6 Device-Device Skew FBK, Device 1 VDD/2 VDD/2 FBK, Device 2 t7 Test Circuits Test Circuit # 1 VDD 0.1 µF OUTPUTS CLK OUT C LOAD GND Ordering Information Ordering Code Package Name Package Type Operating Range CY2303SC S8 8-Pin 150-mil SOIC Commercial CY2303SI S8 8-Pin 150-mil SOIC Industrial Document #: 38-07249 Rev. ** Page 5 of 7 CY2303 Package Diagram 8-Lead (150-Mil) SOIC S8 51-85066-A 51-85066-A Document #: 38-07249 Rev. ** Page 6 of 7 © Cypress Semiconductor Corporation, 2001. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. CY2303 Document Title: CY2303 Phase-Aligned Clock Multiplier Document Number: 38-07249 REV. ECN NO. Issue Date Orig. of Change ** 110514 01/07/02 SZV Document #: 38-07249 Rev. ** Description of Change Change from Spec number: 38-01036 to 38-07249 Page 7 of 7