ULTRA-PRECISION DIFFERENTIAL 400mV LVPECL 2:1 MUX with INTERNAL TERMINATION Micrel, Inc. Precision Edge® SY58019U ® Precision Edge SY58019U FEATURES ■ Guaranteed AC performance over temperature and voltage: • DC to 10.7Gbps data throughput • DC to > 7GHz fMAX (clock) • < 240ps propagation delay • < 70ps tr / tf times ■ Ultra-low crosstalk-induced jitter: 0.7psRMS ■ Ultra-low jitter design: • < 1psRMS random jitter • < 10psPP deterministic jitter • < 10psPP total jitter (clock) ■ Unique input termination and VT pin accepts DCcoupled and AC-coupled inputs (CML, PECL, LVDS) ■ 400mV (100k) LVPECL output swing ■ Power supply 2.5V ±5% or 3.3V ±10% ■ –40°C to +85°C temperature range ■ Available in 16-pin (3mm × 3mm) MLF® package Precision Edge® DESCRIPTION The SY58019U is a 2.5V/3.3V precision, high-speed, 2:1 differential MUX capable of handling clocks up to 7GHz and data up to 10.7Gbps. The differential input includes Micrel’s unique, 3-pin input termination architecture that allows customers to interface to any differential signal (AC- or DC-coupled) as small as 100mV without any level shifting or termination resistor networks in the signal path. The outputs are 400mV, 100k compatible, LVPECL, with extremely fast rise/fall times guaranteed to be less than 70ps. The SY58019U operates from a 2.5V ±5% supply or a 3.3V ±10% supply and is guaranteed over the full industrial temperature range of –40°C to +85°C. For applications that require CML outputs, consider the SY58017U or for 800mV LVPECL outputs the SY58018U. The SY58019U is part of Micrel’s high-speed, Precision Edge® product line. All support documentation can be found on Micrel’s web site at www.micrel.com. APPLICATIONS ■ ■ ■ ■ Redundant clock distribution OC-3 to OC-192 SONET/SDH clock/data distribution Loopback Fibre Channel distribution FUNCTIONAL BLOCK DIAGRAM TYPICAL PERFORMANCE IN0 50Ω VT0 50Ω 0 /IN0 IN1 Output Swing (100mV/div.) Q0 MUX /Q0 50Ω VT1 50Ω 1 S /IN1 SEL (TTL/CMOS) TIME (20ps/div.) (223Ð1PRBS) Precision Edge is a registered trademark of Micrel, Inc. AnyGate is a registered trademark of Micrel, Inc. MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc. M9999-082707 [email protected] or (408) 955-1690 Rev.: D 1 Amendment: /0 Issue Date: August 2007 Precision Edge® SY58019U Micrel, Inc. VT0 GND GND VCC PACKAGE/ORDERING INFORMATION 16 15 14 13 Ordering Information(1) /IN0 2 11 GND IN1 3 10 GND /IN1 4 9 5 6 7 8 NC Q VCC 12 SEL 1 VT1 IN0 Part Number Package Type Operating Range Package Marking Lead Finish SY58019UMI MLF-16 Industrial 019U Sn-Pb SY58019UMITR(2) MLF-16 Industrial 019U Sn-Pb SY58019UMG(3) MLF-16 Industrial 019U with Pb-Free bar-line indicator Pb-Free NiPdAu SY58019UMGTR(2, 3) MLF-16 Industrial 019U with Pb-Free bar-line indicator Pb-Free NiPdAu /Q Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC electricals only. 2. Tape and Reel. 3. Pb-Free package recommended for new designs. 16-Pin MLF® PIN DESCRIPTION Pin Number Pin Name Pin Function 1, 2 3, 4 IN0, /IN0 IN1, /IN1 Differential Input: These input pairs are the differential signal inputs to the device. They accept differential AC- or DC-coupled signals as small as 100mV. Each pin of a pair internally terminates to a VT pin through 50Ω. Note that these inputs will default to an indeterminate state if left open. Please refer to the “Input Interface Applications” section for more details. 16, 5 VT0, VT1 Input Termination Center-Tap: Each side of the differential input pair terminates to a VT pin. The VT0 and VT1 pins provide a center-tap to a termination network for maximum interface flexibility. See “Input Interface Applications” section for more details. 6 SEL This single-ended TTL/CMOS compatible input selects the inputs to the multiplexer. Note that this input is internally connected to a 25kΩ pull-up resistor and will default to a logic HIGH state if left open. 7 NC No connect. 8, 13 VCC Positive Power Supply: Bypass with 0.1µF0.01µF low ESR capacitors. 0.01µF capacitor should be as close to VCC pin as possible. 12, 9 Q, /Q Differential Outputs: This 100k compatible LVPECL output pair is the output of the device. Terminate through 50Ω to VCC – 2V. See “Output Interface Applications” section. It is a logic function of the IN0, IN1, and SEL inputs. Please refer to the “Truth Table” for details. 10, 11, 14, 15 GND, Exposed Pad Ground. Ground pins and exposed pad must be connected to the same ground plane. TRUTH TABLE SEL Output 0 CH0 Input Selected 1 CH1 Input Selected M9999-082707 [email protected] or (408) 955-1690 2 Precision Edge® SY58019U Micrel, Inc. Absolute Maximum Ratings(1) Operating Ratings(2) Power Supply Voltage (VCC ) ...................... –0.5V to +4.0V Input Voltage (VIN) ......................................... –0.5V to VCC LVPECL Output Current (IOUT) Continuous ............................................................. 50mA Surge .................................................................... 100mA Termination Current(3) Source or Sink Current on VT pin ....................... ±100mA Input Current Source or Sink Current on IN, /IN pin ................... ±50mA Lead Temperature (soldering, 20 sec.) ..................... 260°C Storage Temperature Range (TS ) ........... –65°C to +150°C Power Supply Voltage (VCC) ............... +2.375V to +2.625V ............................................................ +3.0V to +3.6V Ambient Temperature Range (TA) ............. –40°C to +85°C Package Thermal Resistance(4) MLF® (θJA) Still-Air ............................................................. 60°C/W MLF® (ψJB) Junction-to-Board ............................................ 38°C/W DC ELECTRICAL CHARACTERISTICS(5) TA = –40°C to +85°C, unless otherwise stated. Symbol Parameter Condition Min Typ Max Units VCC Power Supply Voltage VCC = 2.5V VCC = 3.3V 2.375 3.0 2.5 3.3 2.625 3.6 V V ICC Power Supply Current No load, max. VCC 55 70 mA RDIFF_IN Differential Input Resistance (IN0-to-/IN0, IN1-to-/IN1) 80 100 120 Ω RIN Input Resistance (IN0-to-VT0, /IN0-to-VT0, IN1-to-VT1, /IN1-to-VT1) 40 50 60 Ω VIH Input HIGH Voltage (IN0, /IN0, IN1, /IN1) VCC – 1.6 VCC V VIL Input LOW Voltage (IN0, /IN0, IN1, /IN1) 0 VIH – 0.1 V VIN Input Voltage Swing (IN0, /IN0, IN1, /IN1) See Figure 1a 0.1 1.7 V VDIFF_IN Differential Input Voltage Swing |IN0, /IN0|, |IN1, /IN1| See Figure 1b 0.2 VT IN IN to VT (IN0, /IN0, IN1, /IN1) Note 6 V 1.28 V Notes: 1. Permanent device damage may occur if “Absolute Maximum Ratings” are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to “Absolute Maximum Ratings” conditions for extended periods may affect device reliability. 2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. Due to the limited drive capability, use for input of the same package only. 4. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the device’s most negative potential (GND) on the PCB. ψJB uses 4-layer θJA in still-air measurement, unless otherwise stated. 5. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. 6. VIH (min) not lower than 1.2V. M9999-082707 [email protected] or (408) 955-1690 3 Precision Edge® SY58019U Micrel, Inc. LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS(7) VCC = 2.5V ±5% or 3.3V ±10%; TA= –40°C to +85°C; RL = 50Ω to VCC–2V, unless otherwise stated. Symbol Parameter Condition Min Typ Max Units VOH Output HIGH Voltage Q, /Q VCC – 1.145 VCC – 0.895 V VOL Output LOW Voltage Q, /Q VCC – 1.545 VCC – 1.295 V VOUT Output Differential Swing Q, /Q See Figure 1a 150 400 mV VDIFF_OUT Differential Output Voltage Swing Q, /Q See Figure 1b 300 800 mV Min Typ LVTTL/CMOS DC ELECTRICAL CHARACTERISTICS(7) VCC = 2.5V ±5% or 3.3V ±10%; TA= –40°C to +85°C Symbol Parameter Condition VIH Input HIGH Voltage VIL Input LOW Voltage 0.8 V IIH Input HIGH Current 40 µA IIL Input LOW Current 2.0 –300 Note: 7. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. M9999-082707 [email protected] or (408) 955-1690 Max 4 Units V µA Precision Edge® SY58019U Micrel, Inc. AC ELECTRICAL CHARACTERISTICS(8) VCC = 2.5V ±5% or 3.3V ±10%; TA= –40°C to +85°C, RL = 50Ω to VCC–2V, unless otherwise stated. Symbol Parameter Condition fMAX Maximum Operating Frequency Min NRZ Data VOUT ≥ 200mV tpd Differential Propagation Delay tpd Tempco tJITTER Input-to-Input Skew Clock Units Gbps 7 GHz IN-to-Q 90 160 240 ps SEL-to-Q 50 160 350 ps 75 Note 9 3 fs/°C 15 ps Part-to-Part Skew Note 10 100 ps Random Jitter Note 11 1 psRMS Deterministic Jitter Note 12 10 psPP Cycle-to-Cycle Jitter Note 13 1 psRMS Total Jitter Note 14 10 psPP Note 15 0.7 psRMS 70 ps Data Clock Max 10.7 Differential Propagation Delay Temperature Coefficient tSKEW Typ Crosstalk-Induced Jitter tr, tf Output Rise/Fall Time 20% to 80%, at full swing 20 40 Notes: 8. High frequency AC parameters are guaranteed by design and characterization. 9. Input-to-input skew is the difference in time from an input-to-output in comparison to any other input-to-output. In addition, the input-to-input skew does not include the output skew. 10. Part-to-part skew is defined for two parts with identical power supply voltages at the same temperature and with no skew of the edges at the respective inputs. 11. RJ is measured with a K28.7 comma detect character pattern, measured at 2.5Gbps/3.2Gbps. 12. DJ is measured at 2.5Gbps/3.2Gbps, with both K28.5 and 223–1 PRBS pattern. 13. Cycle-to-cycle jitter definition: the variation of periods between adjacent cycles, Tn–Tn–1 where T is the time between rising edges of the output signal. 14. Total jitter definition: with an ideal clock input of frequency ≤ fMAX, no more than one output edge in 1012 output edges will deviate by more than the specified peak-to-peak jitter value. 15. Crosstalk is measured at the output while applying two similar frequencies that are asynchronous with respect to each other at the inputs. M9999-082707 [email protected] or (408) 955-1690 5 Precision Edge® SY58019U Micrel, Inc. SINGLE-ENDED AND DIFFERENTIAL SWINGS VDIFF_IN, VDIFF_OUT 800mV (Typ.) VIN, VOUT 400mV (Typ.) Figure 1a. Single-Ended Voltage Swing Figure 1b. Differential Voltage Swing TIMING DIAGRAMS IN0 /IN0 tpd Q /Q SEL tpd tpd Q /Q M9999-082707 [email protected] or (408) 955-1690 6 Precision Edge® SY58019U Micrel, Inc. TYPICAL OPERATING CHARACTERISTICS VCC = 3.3V, VIN = 100mV, TA = 25°C, unless otherwise stated. Propagation Delay vs. Input Voltage Swing Propagation Delay vs. Temperature 166 PROPAGATION DELAY (ps) PROPAGATION DELAY (ps) 167 166 165 164 163 162 161 160 -40 -20 0 164 163 162 161 160 100 200 300 400 500 600 700 800 20 40 60 80 100 120 INPUT VOLTAGE SWING (mV) TEMPERATURE (°C) OUTPUT AMPLITUDE (mV) 450 Output Amplitude vs. Frequency 400 350 300 250 200 150 100 50 0 0 1 2 3 4 5 6 7 8 9 10 FREQUENCY (GHz) M9999-082707 [email protected] or (408) 955-1690 165 7 Precision Edge® SY58019U Micrel, Inc. TYPICAL OPERATING CHARACTERISTICS VCC = 3.3V, VIN = 100mV, TA = 25°C, unless otherwise stated. 200MHz Output Output Swing (100mV/div.) Output Swing (100mV/div.) 2GHz Output TIME (500ps/div.) TIME (100ps/div.) Output Swing (100mV/div.) Output Swing (100mV/div.) 7GHz Output TIME (100ps/div.) (223Ð1PRBS) TIME (20ps/div.) Output Swing (100mV/div.) Output Swing (100mV/div.) TIME (100ps/div.) (223Ð1PRBS) M9999-082707 [email protected] or (408) 955-1690 TIME (50ps/div.) (223Ð1PRBS) 8 Precision Edge® SY58019U Micrel, Inc. 10.7Gbps Output Output Swing (100mV/div.) Output Swing (100mV/div.) 10.7Gbps Mask TIME (20ps/div.) (223–1PRBS) M9999-082707 [email protected] or (408) 955-1690 TIME (20ps/div.) (223–1PRBS) 9 Precision Edge® SY58019U Micrel, Inc. INPUT AND OUTPUT STAGES VCC VCC IN 50Ω VT GND 50Ω /Q /IN Q Figure 2a. Simplified Differential Input Stage Figure 2b. Simplified LVPECL Output Stage INPUT INTERFACE APPLICATIONS VCC VCC VCC IN LVPECL IN /IN VCC SY58019U IN PECL CML /IN /IN 0.01µF GND Rpd VT Rpd SY58019U GND Rpd GND For VCC = 3.3V, Rpd = 50Ω For VCC = 2.5V, Rpd = 19Ω Figure 3a. LVPECL Interface (DC-Coupled) VCC VCC –1.4V VT For 3.3V, Rpd = 100Ω For 2.5V, Rpd = 50Ω Figure 3b. LVPECL Interface (AC-Coupled) IN IN LVDS /IN /IN SY58019U GND VCC –1.4V SY58019U GND VT Figure 3d. CML Interface (AC-Coupled) M9999-082707 [email protected] or (408) 955-1690 NC NC VT (Option: May connect VT to VCC) VCC CML SY58019U GND VT Figure 3e. LVDS Interface 10 Figure 3c. CML Interface (DC-Coupled) Precision Edge® SY58019U Micrel, Inc. OUTPUT INTERFACE APPLICATIONS +3.3V +3.3V ZO = 50Ω R1 130Ω +3.3V R1 130Ω +3.3V +3.3V Z = 50Ω Z = 50Ω ZO = 50Ω 50Ω R2 82Ω “Source” R2 82Ω For 3.3V, Rb = 50Ω For 2.5V, Rb = 19Ω For 3.3V, R1 = 250Ω, R2 = 62.5Ω For 2.5V, R1 = 130Ω, R2 = 82Ω Rb 50Ω “Destination” VCC 0.01µF (optional) Figure 4b. Three-Resistor “Y” Termination Figure 4a. Parallel Thevenin-Equivalent Termination +3.3V +3.3V R1 130Ω ZO = 50Ω R2 82Ω Figure 4c. Terminating Unused I/O RELATED MICREL PRODUCTS AND SUPPORT DOCUMENTATION Part Number Function Data Sheet Link SY58016L 3.3V 10Gbps Differential CML Line Driver/Receiver with Internal I/O Termination http://www.micrel.com/product-info/products/sy58016l.shtml SY58017U Ultra Precision Differential CML 2:1 MUX with Internal I/O Termination http://www.micrel.com/product-info/products/sy58017u.shtml SY58018U Ultra Precision Differential LVPECL 2:1 MUX with Internal Termination http://www.micrel.com/product-info/products/sy58018u.shtml SY58025U 10.7Gbps Dual 2:1 CML MUX with Internal I/O Termination http://www.micrel.com/product-info/products/sy58025u.shtml SY58026U 5Gbps Dual 2:1 MUX with Internal Termination http://www.micrel.com/product-info/products/sy58026u.shtml SY58027U 10.7Gbps Dual 2:1 400mV LVPECL MUX with Internal Termination http://www.micrel.com/product-info/products/sy58027u.shtml SY58051U 10.7Gbps AnyGate® with Internal Input and Output Termination http://www.micrel.com/product-info/products/sy58051u.shtml SY58052U HBW Solutions 10Gbps Clock/Data Retimer with 50Ω Input Termination http://www.micrel.com/product-info/products/sy58052u.shtml MLF® Application Note www.amkor.com/products/notes_papers/MLF_AppNote_0902.pdf New Products and Applications www.micrel.com/product-info/products/solutions.shtml M9999-082707 [email protected] or (408) 955-1690 11 Precision Edge® SY58019U Micrel, Inc. 16-PIN MicroLeadFrame® (MLF-16) Package EP- Exposed Pad Die CompSide Island Heat Dissipation Heat Dissipation VEE Heavy Copper Plane VEE Heavy Copper Plane PCB Thermal Consideration for 16-Pin MLF® Package (Always solder, or equivalent, the exposed pad to the PCB) Package Notes: 1. Package meets Level 2 qualification. 2. All parts are dry-packaged before shipment. 3. Exposed pads must be soldered to a ground for proper thermal management. MICREL, INC. TEL 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2005 Micrel, Incorporated. M9999-082707 [email protected] or (408) 955-1690 12