Precision Edge® SY58025U ® Micrel, Inc. Precision Edge ULTRA PRECISION DUAL 2:1 CML SY58025U MUX WITH INTERNAL I/O TERMINATION FEATURES Two independent differential 2:1 multiplexers Guaranteed AC performance over temperature and voltage: • DC-to >10.7Gbps data rate throughput • <290ps IN-to-Out tpd • <70ps tr / tf times Unique, patent-pending input isolation design minimizes crosstalk Ultra-low jitter design: • <1psRMS random jitter • <10psPP deterministic jitter • <10psPP total jitter (clock) • <0.7psRMS crosstalk-induced jitter Unique, patent-pending 50ý input termination and VT pin accepts DC-coupled and AC-coupled inputs (CML, LVDS, PECL) Typical 400mV CML output swing (RL = 50ý) Internal 50ý input termination Power supply 2.5V ±5% or 3.3V ±10% –40°C to +85°C temperature range Available in 32-pin (5mm ∞ 5mm) MLF® package Precision Edge® DESCRIPTION The SY58025U features two ultra-fast, low jitter 2:1 differential muxes with a guaranteed maximum data or clock throughput of 10.7Gbps or 7GHz, respectively. The SY58025U differential inputs include a unique, internal termination design that allows access to the termination network through a VT pin. The device easily interfaces to different logic standards, both AC- and DCcoupled, without external resistor-bias and termination networks. The result is a clean, stub-free, low jitter interface solution. The differential CML output is optimized for 50ý environments with internal 50ý source termination and a 400mV output swing. The SY58025U operates from a 2.5V or 3.3V supply and is guaranteed over the full industrial temperature range (–40°C to +85°C). The SY58025U is part of Micrel’s Precision Edge® product family. All support documentation can be found on Micrel’s web site at www.micrel.com. APPLICATIONS Data communication systems All SONET OC3-OC-768 applications All Fibre Channel applications All GigE applications FUNCTIONAL BLOCK DIAGRAM INA0 INB0 50Ω VTA0 50Ω 50Ω VTB0 50Ω 0 /INA0 MUX A INA1 50Ω VTA1 50Ω /INB0 QA VREF-ACA0 1 0 QB VREF-ACB0 /QA MUX B /QB INB1 50Ω VTB1 50Ω S /INA1 1 S /INB1 VREF-ACA1 VREF-ACB1 SELA (TTL/CMOS) SELB (TTL/CMOS) AnyGate and Precision Edge are registered trademarks 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® SY58025U Micrel, Inc. INA1 VREF-ACA1 VTA1 INA1 /INA0 VREF-ACA0 VTA0 INA0 PACKAGE/ORDERING INFORMATION Ordering Information(1) 32 31 30 29 28 27 26 25 INB0 VTB0 VREF-ACB0 /INB0 INB1 VTB1 VREF-ACB1 /INB1 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 GND VCC QA /QA VCC NC SELA VCC GND VCC /QB QB VCC NC SELB VCC 9 10 11 12 13 14 15 16 32-Pin MLF® (MLF-32) Part Number Package Type Operating Range Package Marking Lead Finish SY58025UMI MLF-32 Industrial SY58025U Sn-Pb SY58025UMITR(2) MLF-32 Industrial SY58025U Sn-Pb SY58025UMG(3) MLF-32 Industrial SY58025Uwith Pb-Free bar-line indicator Pb-Free NiPdAu SY58025UMGTR(2, 3) MLF-32 Industrial SY58025U with Pb-Free bar-line indicator Pb-Free NiPdAu 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. PIN DESCRIPTION Pin Number Pin Name 25, 28, 29, 32, 1, 4, 5, 8 INA0, /INA0, INA1, /INA1, INB0, /INB0, INB1, /INB1 Differential Inputs: These input pairs are the differential signal inputs to the device. Inputs accept AC- or DC-coupled differential signals as small as 100mV. Each pin of a pair internally terminates to a VT pin through 50ý. Note that these inputs will default to an indeterminate state if left open. Unused differential input pairs can be terminated by connecting one input to VCC and the complementary input to GND through a 1ký resistor. The VT pin is to be left open in this configuration. Please refer to the “Input Interface Applications” section for more details. 26, 30, 2, 6 VTA0 , VTA1, VTB0, VTB1 Input Termination Center-Tap: Each side of the differential input pair, terminates to a VT pin. Each VT pin provides a center-tap to a termination network for maximum interface flexibility. See “Input Interface Applications” section for more details. 18, 15 SELA, SELB Bank A, Bank B Input Channel Select (TTL/CMOS): These TTL/CMOS-compatible inputs select the inputs to the multiplexers. These inputs are internally connected to a 25ký pull-up resistor and will default to a logic HIGH state if left open. Input switching threshold is VCC/2. 27, 31, 3, 7 VREF-ACA0, VREF-ACA1, VREF-ACB0, VREF-ACB1 Reference Output Voltage: These outputs bias to VCC –1.2V. Connect to the VT pin when AC-coupling the data inputs. Bypass with 0.01µF low ESR capacitor to VCC. Maximum current source or sink is 0.5mA. See “Input Interface Applications” section. 10, 13, 16, 17, 20, 23 VCC 22, 21, 12, 11 QA, /QA, QB, /QB 9, 24 GND, Exposed pad 14, 19 NC M9999-082707 [email protected] or (408) 955-1690 Pin Function Positive Power Supply: Bypass with 0.1µF™ℑ0.01µF low ESR capacitors. Differential CML Outputs: MUX A and MUX B selected CML outputs. See “Output Interface Applications” section for termination. Refer to the “Truth Table” for logic operation. Ground: Ground pin and exposed pad must be connected to the same ground plane. Not connected. 2 Precision Edge® SY58025U 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 Current (VREF-AC) Source or sink current on VREF-AC(3) ................... ±1.5mA 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 ............................................................. 35°C/W MLF® (ψJB) Junction-to-board ............................................ 20°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 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) 115 140 mA RDIFF_IN Differential Input Resistance (IN-to-/IN) 80 100 120 ý RIN Input Resistance (IN-to-VT, /IN-to-VT) 40 50 60 ý VIH Input High Voltage (IN, /IN) VCC –1.6 VCC V VIL Input Low Voltage (IN, /IN) 0 VIH –0.1 V VIN Input Voltage Swing (IN, /IN) See Figure 1a. 0.1 1.7 V VDIFF_IN Differential Input Voltage Swing |IN - /IN| See Figure 1b. 0.2 VT IN In to VT (IN, /IN) VREF-AC Output Reference Voltage Note 7 V 1.28 VCC–1.3 VCC–1.2 VCC–1.1 V V Notes: 1. Permanent device damage may occur if the ratings in “Absolute Maximum Ratings” section 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 4layer θJA in still air 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 50ý pull-ups. See Figure 1b. 7. VIH (min) not lower than 1.2V. M9999-082707 [email protected] or (408) 955-1690 3 Precision Edge® SY58025U Micrel, Inc. CML OUTPUT DC ELECTRICAL CHARACTERISTICS(7) VCC = 2.5V ±5% or 3.3V ±10%; TA = –40°C to +85°C; RL = 100ý across each output pair, or equivalent, unless otherwise stated. Symbol Parameter Condition Min Typ VOH Output High Voltage Q, /Q VOUT Output Voltage Swing Q, /Q See Figure 1a. 325 400 mV VDIFF-OUT Differential Output Voltage Swing Q, /Q See Figure 1b. 650 800 mV ROUT Output Source Impedance Q, /Q 40 50 60 ý Min Typ Max Units VCC–0.020 Max Units VCC V LVTTL/CMOS DC ELECTRICAL CHARACTERISTICS(7) 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 IIH Input HIGH Current –125 IIL Input LOW Current –300 2.0 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 4 V 0.8 V 50 µA µA Precision Edge® SY58025U Micrel, Inc. AC ELECTRICAL CHARACTERISTICS(8) VCC = 2.5V ±5% or 3.3V ±10%; TA= –40°C to +85°C; RL = 100ý across each output pair, or equivalent, unless otherwise stated. Symbol Parameter Condition fMAX Maximum Operating Frequency Min NRZ Data VOUT ž 200mV Typ Max Units 10.7 Clock Gbps 6 GHz Propagation Delay tpd IN-to-Q SEL-to-Q tSKEW tJITTER 290 400 ps ps Input-to-Input Skew (Within-Bank) Note 9 3 15 ps Bank-to-Bank Skew Note 10 5 20 ps Part-to-Part Skew Note 11 100 ps Data Note 12 1 psRMS Deterministic Jitter (DJ) Note 13 10 psPP Cycle-to-Cycle Jitter Note 14 1 psRMS Total Jitter (TJ) Note 15 10 psPP Crosstalk-Induced Jitter Channel-to-Channel Note 16, Within-bank. 0.7 psRMS Output Rise/Fall Time 20% to 80% At full swing. 70 ps Random Jitter (RJ) Clock tr, tf 140 100 20 50 Notes: 8. High-speed AC parameters are guaranteed by design and characterization. VIN swing ž 100mV unless otherwise noted. 9. Input-to-input skew is the difference in time between two inputs to the output within a bank. 10. Bank-to-bank skew is the difference in time from input to the output between bank. 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. Random jitter is measured with a K28.7 comma detect character pattern, measured at 10.7Gbps and 2.5Gbps/3.2Gbps. 13. Deterministic jitter 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. TRUTH TABLES INA0 /INA0 INA1 /INA1 SELA QA /QA 0 1 X X 0 0 1 1 0 X X 0 1 0 X X 0 1 1 0 1 X X 1 0 1 1 0 INB0 /INB0 INB1 /INB1 SELB QB /QB 0 1 X X 0 0 1 1 0 X X 0 1 0 X X 0 1 1 0 1 X X 1 0 1 1 0 M9999-082707 [email protected] or (408) 955-1690 5 Precision Edge® SY58025U 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 INA0, INA1 /INA0, /INA1 tpd QA /QA INB0, INB1 /INB0, /INB1 tpd QB /QB SELA VCC/2 VCC/2 SELA-to-QA tpd tpd QA /QA SELB VCC/2 VCC/2 SELB-to-QB tpd tpd QB /QB M9999-082707 [email protected] or (408) 955-1690 6 Precision Edge® SY58025U Micrel, Inc. TYPICAL OPERATING CHARACTERISTICS VCC = 3.3V, TA = 25°C, RL = 100ý across each pair, DC-coupled, unless otherwise stated. 280 270 260 250 240 230 220 210 200 -50 450 CML LVDS PECL SEL -25 0 25 50 75 TEMPERATURE (°C) 400 350 300 250 200 150 100 50 0 0 1 2 3 4 5 6 7 8 9 10 OUTPUT FREQUENCY (GHz) 100 TIME (200ps/div.) Output Swing (100mV/div.) Output Swing (100mV/div.) Output Amplitude vs. Frequency Output Swing (100mV/div.) 300 290 OUTPUT AMPLITUDE (mV) PROPAGATION DELAY (ps) Propagation Delay vs. Temperature TIME (50ps/div.) Output Swing (100mV/div.) Output Swing (100mV/div.) TIME (100ps/div.) TIME (25ps/div.) TIME (50ps/div.) M9999-082707 [email protected] or (408) 955-1690 7 Precision Edge® SY58025U Micrel, Inc. TYPICAL OPERATING CHARACTERISTICS VCC = 3.3V, TA = 25°C, RL = 100ý across each pair, DC-coupled, unless otherwise stated. Output Swing (100mV/div.) 2GHz Clock Output Swing (100mV/div.) TIME (600ps/div.) TIME (70ps/div.) Output Swing (100mV/div.) 5GHz Clock TIME (25ps/div.) M9999-082707 [email protected] or (408) 955-1690 8 Precision Edge® SY58025U Micrel, Inc. INPUT AND OUTPUT STAGE INTERNAL TERMINATION 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 IN LVPECL CML /IN IN /IN VCC SY58025U CML SY58025U GND /IN GND VT NC VREF-AC Rb GND VCC Figure 3a. DC-Coupled CML Interface 0.01µF Figure 3b. AC-Coupled CML Interface VCC VCC IN LVPECL /IN Rp IN SY58025U LVDS /IN VCC GND VT VREF-AC 0.01µF For 3.3V, Rp = 100Ω. For 2.5V, Rp = 50Ω. Figure 3d. AC-Coupled PECL Interface M9999-082707 [email protected] or (408) 955-1690 SY58025U GND NC VREF-AC VT VREF-AC Option: may connect VT to VCC. GND VT SY58025U NC Rp 0.01µF NC VT NC VREF-AC Figure 3e. LVDS Interface 9 For VCC = 3.3V, Rb = 50Ω. For VCC = 2.5V, Rb = 19Ω. Figure 3c. DC-Coupled PECL Interface Precision Edge® SY58025U Micrel, Inc. OUTPUT INTERFACE APPLICATIONS VCC 50Ω VCC 50Ω 50Ω /Q 50Ω /Q 50Ω DC Bias per application 100Ω Q Q GND 50Ω GND Figure 4. CML DC-Coupled Termination 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 Termination http://www.micrel.com/product-info/products/sy58016l.shtml SY58017U 10.7Gbps Differential CML 2:1 MUX with Internal Termination http://www.micrel.com/product-info/products/sy58017u.shtml SY58018U 5Gbps LVPECL 2:1 MUX with Internal Termination http://www.micrel.com/product-info/products/sy58018u.shtml SY58019U 10.7Gbps 400mV LVPECL 2:1 MUX with Internal Termination http://www.micrel.com/product-info/products/sy58019u.shtml SY58026U 5Gbps Dual 2:1 LVPECL 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 50ý 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 M9999-082707 [email protected] or (408) 955-1690 10 Precision Edge® SY58025U Micrel, Inc. 32-PIN MicroLeadFrame® (MLF-32) Package EP- Exposed Pad Die CompSide Island Heat Dissipation Heat Dissipation VEE Heavy Copper Plane VEE Heavy Copper Plane PCB Thermal Consideration for 32-Pin MLF® Package (Always solder, or equivalent, the exposed pad to the PCB) Package Notes: 1. Package meets Level 2 Moisture Sensitivity Classification. 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. M9999-082707 [email protected] or (408) 955-1690 11