MC100LVEL38 3.3VECL ÷2, ÷4/6 Clock Generation Chip Description The MC100LVEL38 is a low skew ÷2, ÷4/6 clock generation chip designed explicitly for low skew clock generation applications. The internal dividers are synchronous to each other, therefore, the common output edges are all precisely aligned. The device can be driven by either a differential or single-ended input signal. The common enable (EN) is synchronous so that the internal dividers will only be enabled/disabled when the internal clock is already in the LOW state. This avoids any chance of generating a runt clock pulse on the internal clock when the device is enabled/disabled as can happen with an asynchronous control. An internal runt pulse could lead to losing synchronization between the internal divider stages. The internal enable flip-flop is clocked on the falling edge of the input clock, therefore, all associated specification limits are referenced to the negative edge of the clock input. The Phase_Out output will go HIGH for one clock cycle whenever the ÷2 and the ÷4/6 outputs are both transitioning from a LOW to a HIGH. This output allows for clock synchronization within the system. Upon startup, the internal flip-flops will attain a random state; therefore, for systems which utilize multiple LVEL38s, the master reset (MR) input must be asserted to ensure synchronization. For systems which only use one LVEL38, the MR pin need not be exercised as the internal divider design ensures synchronization between the ÷2 and the ÷4/6 outputs of a single device. The VBB pin, an internally generated voltage supply, is available to this device only. For single-ended input conditions, the unused differential input is connected to VBB as a switching reference voltage. VBB may also rebias AC coupled inputs. When used, decouple VBB and VCC via a 0.01 mF capacitor and limit current sourcing or sinking to 0.5 mA. When not used, VBB should be left open. • • • SO−20 WB DW SUFFIX CASE 751D MARKING DIAGRAM* 20 100LVEL38 AWLYYWWG 1 A WL YY WW G = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package *For additional marking information, refer to Application Note AND8002/D. ORDERING INFORMATION Features • • • • • • http://onsemi.com See detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet. 50 ps Maximum Output-to-Output Skew Synchronous Enable/Disable Master Reset for Synchronization ESD Protection: >2 kV Human Body Model The 100 Series Contains Temperature Compensation PECL Mode Operating Range: VCC = 3.0 V to 3.8 V with VEE = 0 V NECL Mode Operating Range: VCC = 0 V with VEE = −3.0 V to −3.8 V Internal Input 75 kW Pulldown Resistors Meets or Exceeds JEDEC Spec EIA/JESD78 IC Latchup Test • Moisture Sensitivity Level 1 • • • For Additional Information, see Application Note AND8003/D Flammability Rating: UL 94 V−0 @ 0.125 in, Oxygen Index: 28 to 34 Transistor Count = 388 devices Pb−Free Packages are Available* *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. © Semiconductor Components Industries, LLC, 2006 November, 2006 − Rev. 8 1 Publication Order Number: MC100LVEL38/D MC100LVEL38 VCC Q0 Q0 Q1 Q1 Q2 Q2 Q3 Q3 VEE 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 CLK VBB MR VCC EN DIV_SEL CLK VCC Phase_Out Phase_Out Figure 1. Pinout: 20-Lead SOIC (Top View) Warning: All VCC and VEE pins must be externally connected to Power Supply to guarantee proper operation. Q0 CLK ÷2 CLK R Q0 Q1 Q1 EN Q2 R ÷4/6 Q2 R Q3 MR Q3 DIVSEL PHASE_OUT Phase Out R Logic PHASE_OUT VBB Figure 2. Logic Diagram Table 1. PIN DESCRIPTION Pin Table 2. FUNCTION TABLE Function CLK, CLK ECL Diff Clock Inputs Q0, Q1; Q0, Q1 ECL Diff ÷2 Outputs Q2, Q3; Q2, Q3 ECL Diff ÷4/6 Outputs EN ECL Sync Enable Input MR ECL Master Reset Input DIVSEL ECL Frequency Select Input Phase_Out, Phase_Out ECL Phase Sync Diff. Signal Output VBB Reference Voltage Output VCC Positive Supply VEE Negative Supply CLK EN MR Z ZZ X L H X L L H Function Divide Hold Q0−3 Reset Q0−3 Z = Low-to-High Transition ZZ = High-to-Low Transition X = Don’t Care DVSEL L H http://onsemi.com 2 Q2, Q3 OUTPUTS Divide by 4 Divide by 6 MC100LVEL38 CLK Q (÷2) Q (÷4) Q (÷6) Phase_Out (÷4) Phase_Out (÷6) Figure 3. Timing Diagrams Table 3. MAXIMUM RATINGS Symbol Parameter Condition 1 Condition 2 Rating Unit VCC PECL Mode Power Supply VEE = 0 V 8 to 0 V VEE NECL Mode Power Supply VCC = 0 V −8 to 0 V VI PECL Mode Input Voltage NECL Mode Input Voltage VEE = 0 V VCC = 0 V 6 to 0 −6 to 0 V V Iout Output Current Continuous Surge 50 100 mA mA IBB VBB Sink/Source ± 0.5 mA TA Operating Temperature Range −40 to +85 °C Tstg Storage Temperature Range −65 to +150 °C qJA Thermal Resistance (Junction−to−Ambient) 0 lfpm 500 lfpm SOIC−20 SOIC−20 90 60 °C/W °C/W qJC Thermal Resistance (Junction−to−Case) Standard Board SOIC−20 30 to 35 °C/W Tsol Wave Solder <2 to 3 sec @ 248°C <2 to 3 sec @ 260°C 265 265 °C Pb Pb−Free VI VCC VI VEE Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. http://onsemi.com 3 MC100LVEL38 Table 4. LVPECL DC CHARACTERISTICS VCC = 3.3 V; VEE = 0.0 V (Note 1) −40°C Symbol Min Characteristic 25°C Typ Max 50 60 Min 85°C Typ Max 50 60 Min Typ Max Unit 54 65 mA IEE Power Supply Current VOH Output HIGH Voltage (Note 2) 2215 2295 2420 2275 2345 2420 2275 2345 2420 mV VOL Output LOW Voltage (Note 2) 1470 1605 1745 1490 1595 1680 1490 1595 1680 mV VIH Input HIGH Voltage (Single−Ended) 2135 2420 2135 2420 2135 2420 mV VIL Input LOW Voltage (Single−Ended) 1490 1825 1490 1825 1490 1825 mV VBB Output Voltage Reference 1.92 2.04 1.92 2.04 1.92 2.04 V VIHCMR Input HIGH Voltage Common Mode Range (Differential) (Note 6) 1.65 2.75 1.65 2.75 1.65 2.75 V IIH Input HIGH Current 150 mA IIL Input LOW Current 150 150 0.5 0.5 0.5 mA NOTE: Device will meet the specifications after thermal equilibrium has been established when mounted in a test socket or printed circuit board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are guaranteed only over the declared operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. 1. Input and output parameters vary 1:1 with VCC. VEE can vary ±0.3 V. 2. Outputs are terminated through a 50 W resistor to VCC − 2.0 V. 3. VIHCMR min varies 1:1 with VEE, max varies 1:1 with VCC. The VIHCMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the specified range and the peak-to-peak voltage lies between VPP Min and 1.0 V. Table 5. LVNECL DC CHARACTERISTICS VCC = 0.0 V; VEE = −3.3 V (Note 4) −40°C Symbol Characteristic Min 25°C Typ Max 50 60 Min 85°C Typ Max 50 60 Min Typ Max Unit 54 65 mA IEE Power Supply Current VOH Output HIGH Voltage (Note 5) −1085 −1005 −880 −1025 −955 −880 −1025 −955 −880 mV VOL Output LOW Voltage (Note 5) −1830 −1695 −1555 −1810 −1705 −1620 −1810 −1705 −1620 mV VIH Input HIGH Voltage (Single−Ended) −1165 −880 −1165 −880 −1165 −880 mV VIL Input LOW Voltage (Single−Ended) −1810 −1475 −1810 −1475 −1810 −1475 mV VBB Output Voltage Reference −1.38 −1.26 −1.38 −1.26 −1.38 −1.26 V VIHCMR Input HIGH Voltage Common Mode Range (Differential) (Note 6) −1.65 −0.55 −1.65 −0.55 −1.65 −0.55 V IIH Input HIGH Current 150 mA IIL Input LOW Current 150 0.5 150 0.5 0.5 mA NOTE: Device will meet the specifications after thermal equilibrium has been established when mounted in a test socket or printed circuit board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are guaranteed only over the declared operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. 4. Input and output parameters vary 1:1 with VCC. VEE can vary ±0.3 V. 5. Outputs are terminated through a 50 W resistor to VCC − 2.0 V. 6. VIHCMR min varies 1:1 with VEE, max varies 1:1 with VCC. The VIHCMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the specified range and the peak-to-peak voltage lies between VPP Min and 1.0 V. http://onsemi.com 4 MC100LVEL38 Table 6. AC CHARACTERISTICS VCC = 3.3 V; VEE = 0.0 V or VCC = 0.0 V; VEE = −3.3 V (Note 7) −40°C Symbol Characteristic fmax Maximum Toggle Frequency (Divide by 2) tPLH tPHL Propagation Delay to Output CLK to Q (Differential) CLK to Q (Single−Ended) CLK to Phase_Out (Differential) CLK to Phase_Out (Single−Ended) MR to.Q tSKEW Within-Device Skew (Note 8) Min Typ 1.0 1.2 810 710 800 750 510 25°C Max 1010 1010 1000 1050 810 Min Typ 1.0 1.2 85°C Max 850 750 840 790 540 1050 1050 1040 1090 840 Min Typ 1.0 1.2 900 800 890 840 570 Max Unit GHz 1100 1100 1090 1140 870 ps Q0 − Q3 All 50 75 50 75 50 75 Part-to-Part Q0 − Q3 (Differential) All 200 240 200 240 200 240 tS Setup Time EN to CLK DIVSEL to CLK 150 150 150 ps tH Hold Time CLK to EN CLK to Div_Sel 150 200 150 200 150 200 ps VPP Input Swing (Note 9) CLK 250 tRR Reset Recovery Time tPW Minimum Pulse Width CLK MR 800 700 tr, tf Output Rise/Fall Times Q (20% − 80%) 280 1000 250 1000 100 100 800 700 550 250 1000 mV 100 ps 800 700 280 550 280 ps ps 550 ps NOTE: Device will meet the specifications after thermal equilibrium has been established when mounted in a test socket or printed circuit board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are guaranteed only over the declared operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. 7. VEE can vary ±0.3 V. 8. Skew is measured between outputs under identical transitions. 9. VPP(min) is minimum input swing for which AC parameters are guaranteed. The device will function reliably with differential inputs down to 100 mV. Q Zo = 50 W D Receiver Device Driver Device Q D Zo = 50 W 50 W 50 W VTT VTT = VCC − 2.0 V Figure 4. Typical Termination for Output Driver and Device Evaluation (See Application Note AND8020/D − Termination of ECL Logic Devices.) http://onsemi.com 5 MC100LVEL38 ORDERING INFORMATION Package Package† MC100LVEL38DW SOIC−20 38 Units / Rail MC100LVEL38DWG SOIC−20 (Pb−Free) 38 Units / Rail MC100LVEL38DWR2 SOIC−20 1000 / Tape & Reel MC100LVEL38DWR2G SOIC−20 (Pb−Free) 1000 / Tape & Reel Device †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Resource Reference of Application Notes AN1405/D − ECL Clock Distribution Techniques AN1406/D − Designing with PECL (ECL at +5.0 V) AN1503/D − ECLinPS I/O SPiCE Modeling Kit AN1504/D − Metastability and the ECLinPS Family AN1568/D − Interfacing Between LVDS and ECL AN1672/D − The ECL Translator Guide AND8001/D − Odd Number Counters Design AND8002/D − Marking and Date Codes AND8020/D − Termination of ECL Logic Devices AND8066/D − Interfacing with ECLinPS AND8090/D − AC Characteristics of ECL Devices http://onsemi.com 6 MC100LVEL38 PACKAGE DIMENSIONS SO−20 WB DW SUFFIX CASE 751D−05 ISSUE G A 20 q X 45 _ E h H M 10X 0.25 NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 3. DIMENSIONS D AND E DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE PROTRUSION SHALL BE 0.13 TOTAL IN EXCESS OF B DIMENSION AT MAXIMUM MATERIAL CONDITION. 11 B M D 1 10 20X B B 0.25 M T A S B S L A 18X e A1 SEATING PLANE C T DIM A A1 B C D E e H h L q MILLIMETERS MIN MAX 2.35 2.65 0.10 0.25 0.35 0.49 0.23 0.32 12.65 12.95 7.40 7.60 1.27 BSC 10.05 10.55 0.25 0.75 0.50 0.90 0_ 7_ ECLinPS are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. 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