ULTRA-PRECISION DIFFERENTIAL CML 2:1 MUX with INTERNAL I/O TERMINATION Micrel, Inc. Precision Edge® SY58017U ® Precision Edge SY58017U FEATURES ■ Guaranteed AC performance over temperature and voltage: • DC to > 10.7Gbps data throughput • DC to > 7GHz fMAX (clock) • < 240ps propagation delay • < 60ps 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) ■ Internal 50Ω output source termination ■ Typical 400mV CML output swing (RL = 50Ω) ■ 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 SY58017U 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 50Ω source terminated CML, with extremely fast rise/fall times guaranteed to be less than 60ps. The SY58017U 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 LVPECL outputs, consider the SY58018U or SY58019U Multiplexers with LVPECL outputs. The SY58017U 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 10.7Gbps Output 0 /IN0 IN1 Output Swing (100mV/div.) Q0 MUX /Q0 50Ω VT1 50Ω 1 S /IN1 SEL (TTL/CMOS) TIME (25ps/div.) (223–1 PRBS) Precision Edge and AnyGate are registered trademarsk of Micrel, Inc. MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc. M9999-082807 [email protected] or (408) 955-1690 Rev.: D 1 Amendment: /0 Issue Date: August 2007 Precision Edge® SY58017U Micrel, Inc. IN0 /IN0 VT0 GND GND VCC PACKAGE/ORDERING INFORMATION 16 15 14 13 Ordering Information(1) 12 1 2 11 5 6 7 8 NC 9 VCC 10 4 SEL 3 VT1 IN1 /IN1 Part Number Package Type Operating Range Package Marking Lead Finish Q SY58017UMI MLF-16 Industrial 017U Sn-Pb GND SY58017UMITR(2) MLF-16 Industrial 017U Sn-Pb GND SY58017UMG(3) MLF-16 Industrial 017U with Pb-Free bar-line indicator Pb-Free NiPdAu SY58017UMGTR(2, 3) MLF-16 Industrial 017U 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® (MLF-16) 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 CML output pair is the output of the device. Normally terminate with 100Ω across Q and /Q. 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 TRUTH TABLE SEL Output 0 IN0 Input Selected 1 IN1 Input Selected M9999-082807 [email protected] or (408) 955-1690 2 Precision Edge® SY58017U 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 CML Output Voltage (VOUT) ......... VCC –1.0V to VCC +0.5V 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(6) 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 7 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 measurment, 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. Includes current through internal 50Ω pull-ups. 7. VIH (min) not lower than 1.2V. M9999-082807 [email protected] or (408) 955-1690 3 Precision Edge® SY58017U Micrel, Inc. CML OUTPUT DC ELECTRICAL CHARACTERISTICS(8) VCC = 2.5V ±5% or 3.3V ±10%; TA= –40°C to 85°C; RL = 100Ω across each output pair, or equivalent, unless otherwise stated. Symbol Parameter Condition Min Typ VOH Output HIGH Voltage VOUT Output Voltage Swing See Figure 1a 325 400 mV VDIFF_OUT Differential Output Voltage Swing See Figure 1b 650 800 mV ROUT Output Source Impedance 40 50 60 Ω Min Typ Max Units VCC–0.020 Max Units VCC V LVTTL/CMOS DC ELECTRICAL CHARACTERISTICS(8) VCC = 2.5V ±5% or 3.3V ±10%; TA= -40°C to 85°C, unless otherwise stated. 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: 8. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. M9999-082807 [email protected] or (408) 955-1690 4 V µA Precision Edge® SY58017U Micrel, Inc. AC ELECTRICAL CHARACTERISTICS(9) VCC = 2.5V ±5% or 3.3V ±10%; TA= –40°C to 85°C, RL= 100Ω across each output pair, or equivalent, unless otherwise stated. Symbol Parameter Condition fMAX Maximum Operating Frequency Min NRZ Data VOUT ≥ 200mV tpd tpd Tempco Differential Propagation Delay tJITTER Clock Note 10 Part-to-Part Skew Units Gbps 7 GHz IN-to-Q 90 160 240 ps SEL-to-Q 50 180 350 ps 75 Input-to-Input Skew 4 fs/°C 15 ps Note 11 100 ps Random Jitter Note 12 1 psrms Deterministic Jitter Note 13 10 psp-p Cycle-to-Cycle Jitter Note 14 1 psrms Total Jitter Note 15 10 psp-p 0.7 psrms 60 ps Data Clock Max 10.7 Differential Propagation Delay Temperature Coefficient tSKEW Typ Crosstalk-Induced Jitter Note 16 tr, tf Output Rise/Fall Time 20% to 80%, at full swing 20 40 Notes: 9. High-frequency AC parameters are guaranteed by design and characterization. 10. Input-to-input skew is the difference in time from and input-to-output in comparison to any other input-to-output. In addition, the input-input skew does not include the output skew. 11. 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. 12. RJ is measured with a K28.7 comma detect character pattern, measured at 2.5Gbps/3.2Gbps. 13. DJ is measured at 2.5Gbps/3.2Gbps, with both K28.5 and 223–1 PRBS pattern. 14. 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. 15. 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. 16. Crosstalk is measured at the output while applying two similar frequencies that are asynchronous with respect to each other at the inputs. M9999-082807 [email protected] or (408) 955-1690 5 Precision Edge® SY58017U 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 M9999-082807 [email protected] or (408) 955-1690 6 Precision Edge® SY58017U Micrel, Inc. TYPICAL OPERATING CHARACTERISTICS VCC = 2.5V, VIN = 100mV, TA = 25°C, unless otherwise stated. 200MHz Output Output Swing (100mV/div.) Output Swing (100mV/div.) 2.5Gbps Output TIME (600ps/div.) TIME (100ps/div.) 223–1 PRBS 3.2Gbps Output Output Swing (100mV/div.) Output Swing (100mV/div.) 5Gbps Output TIME (50ps/div.) 223–1 PRBS TIME (50ps/div.) 223–1 PRBS Output Swing (100mV/div.) 10.7Gbps Output TIME (25ps/div.) (223–1 PRBS) M9999-082807 [email protected] or (408) 955-1690 7 Precision Edge® SY58017U Micrel, Inc. TYPICAL OPERATING CHARACTERISTICS VCC = 2.5V, VIN = 100mV, TA = 25°C, unless otherwise stated. Propagation Delay vs. Temperature Propagation Delay vs. Input Voltage Swing 166 PROPAGATION DELAY (ps) PROPAGATION DELAY (ps) 168 167 166 165 164 163 162 161 160 159 -40 -20 0 164 163 162 161 160 100 200 300 400 500 600 700 800 20 40 60 80 100 120 TEMPERATURE (°C) INPUT VOLTAGE SWING (mV) OUTPUT AMPLITUDE (mV) Output Amplitude vs. Frequency 500 450 400 350 300 250 200 150 100 50 0 0 1 2 3 4 5 6 7 8 9 10 FREQUENCY (GHz) M9999-082807 [email protected] or (408) 955-1690 165 8 Precision Edge® SY58017U Micrel, Inc. INPUT AND OUTPUT STAGES VCC VCC 50Ω IN 50Ω /Q Q 50Ω VT GND 50Ω /IN GND Figure 2a. Simplified Differential Input Stage Figure 2b. Simplified CML Output Stage INPUT INTERFACE APPLICATIONS VCC VCC VCC IN PECL IN /IN IN CML SY58017U CML /IN /IN SY58017U GND GND SY58017U NC VT VT VCC –1.4V (Option: May connect VT to VCC) Figure 3a. DC-Coupled CML Interface Figure 3b. AC-Coupled CML Interface VCC VCC IN PECL IN /IN LVDS Rpd Rpd SY58017U /IN GND SY58017U VCC –1.4V GND VT For 3.3V, Rpd = 100Ω For 2.5V, Rpd = 50Ω Figure 3d. AC-Coupled PECL Interface M9999-082807 [email protected] or (408) 955-1690 VT VCC 0.01µF GND GND VT NC Figure 3e. LVDS Interface 9 Rpd For VCC = 3.3V, Rpd = 50Ω For VCC = 2.5V, Rpd = 19Ω Figure 3c. DC-Coupled PECL Interface Precision Edge® SY58017U Micrel, Inc. OUTPUT INTERFACE APPLICATIONS VCC 50Ω VCC 50Ω 50Ω /Q 50Ω /Q 50Ω VCC 100Ω Q Q GND 50Ω GND Figure 4a. CML DC-Coupled Termination Figure 4b. CML DC-Coupled Termination VCC 50Ω 50Ω /Q 50Ω DC-bias per application 50Ω Q GND Figure 5. CML AC-Coupled Termination 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 SY58018U Ultra Precision Differential LVPECL 2:1 Mux with Internal Termination http://www.micrel.com/product-info/products/sy58018u.shtml SY58019U Ultra Precision Differential 400mV LVPECL 2:1 MUX with Internal Termination http://www.micrel.com/product-info/products/sy58019u.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 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 HBW Solutions M9999-082807 [email protected] or (408) 955-1690 10 Precision Edge® SY58017U 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. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL + 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. M9999-082807 [email protected] or (408) 955-1690 11