Precision Edge® ULTRA-LOW JITTER 2×××××2 CROSSPOINT Micrel, Inc. Precision ESdY5g8e0®23U SWITCH w/CML OUTPUTS AND SY58023U INTERNAL I/O TERMINATION FEATURES ■ Guaranteed AC performance over temperature and voltage: Precision Edge® • >10.7Gbps data throughput DESCRIPTION • <60ps t /t times r f • <285ps tpd (IN-to-Q) The SY58023U is a 2.5V/3.3V precision, high-speed, fully • <20ps skew differential CML 2×2 crosspoint switch. The SY58023U is ■ Low jitter: optimized to provide two identical output copies with less than 20ps of skew and ultra-low jitter. It can route clock • <10ps total jitter (clock) pp signals as fast as 6GHz or data up to 10.7Gbps. • <1ps random jitter (data) rms The differential input includes Micrel’s unique, 3-pin input • <10pspp deterministic jitter (data) termination architecture that allows the SY58023U to directly ■ Crosstalk induced jitter: <0.7ps interface to LVPECL, LVDS, and CML differential signals rms ■ Accepts an input signal as low as 100mV (AC- or DC-coupled) as small as 100mV (200mVpp) without any level-shifting or termination resistor networks in the signal ■ Unique input termination and V pin accepts DC- T path. The CML outputs features 400mV typical swing into coupled and AC-coupled differential inputs: 50Ω loads, and provide an extremely fast rise/fall time LVPECL, LVDS, and CML guaranteed to be less than 60ps. ■ 50Ω source terminated CML outputs The SY58023U operates from a +2.5V ±5% supply or ■ Fully differential inputs/outputs +3.3V ±10% supply and is guaranteed over the full industrial ■ Power supply 2.5V ±5% and 3.3V ±10% temperature range (–40°C to +85°C). For applications that ■ Industrial –40°C to +85°C temperature range require high speed dual CML switches, consider the SY58024U. The SY58023U is part of Micrel’s high-speed, ■ Available in 16-pin (3mm ××××× 3mm) MLF® package Precision Edge® product line. Datasheets and support documentation can be found on Micrel’s website at www.micrel.com. APPLICATIONS FUNCTIONAL BLOCK DIAGRAM ■ Gigabit Ethernet data/clock routing ■ SONET data/clocking routing SEL0 (TTL/CMOS) ■ Switch fabric clock routing 0 ■ Redundant switchover IN0 Q0 ■ Backplane redundancy 50Ω V T0 /Q0 50Ω 1 /IN0 SEL1 (TTL/CMOS) IN1 0 Q1 50Ω V T1 50Ω /Q1 /IN1 1 Precision Edge is a registered trademark of Micrel , Inc. MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc. M9999-082807 Rev.: G Amendment: /0 hbwhelp@micrel.com or (408) 955-1690 1 Issue Date: August 2007

Precision Edge® Micrel, Inc. SY58023U PACKAGE/ORDERING INFORMATION T0 EL0 ND CC Ordering Information(1) V S G V Package Operating Package Lead 16 15 14 13 Part Number Type Range Marking Finish IN0 1 12 Q0 SY58023UMI MLF-16 Industrial 023U Sn-Pb /IN0 2 11 /Q0 SY58023UMITR(2) MLF-16 Industrial 023U Sn-Pb /IN1 3 10 /Q1 SY58023UMG(3) MLF-16 Industrial 023U with Pb-Free IN1 4 9 Q1 Pb-Free bar-line indicator NiPdAu 5 6 7 8 SY58023UMGTR(2, 3) MLF-16 Industrial 023U with Pb-Free Pb-Free bar-line indicator NiPdAu 1 1 D C VT SEL GN VC Notes: 1. Contact factory for die availability. Dice are guaranteed at T = 25°C, DC electricals only. 16-Pin MLF® (MLF-16) A 2. Tape and Reel. 3. Pb-Free package recommended for new designs. PIN DESCRIPTION Pin Number Pin Name Pin Function 1, 2, IN0, /IN0, Differential Signal Input: Each pin of this pair internally terminates with 50Ω to the VT pin. 3, 4 /IN1, IN1 Note that this input will default to an indeterminate state if left open. See “Input Interface Applications” section. 16, 5 VT0, VT1 Input Termination Center-Tap: Each input terminates to this pin. The VT pin provides a center-tap for each input (IN, /IN) to a termination network for maximum interface flexibility. See “Input Interface Applications” section. 15, 6 SEL0, SEL1 Select Input: TTL/CMOS select input control that selects inputs IN0, or IN1. 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, 14 GND, Ground. Exposed pad must be connected to a ground plane that is the same potential as (Exposed Pad) the device ground pin. 8, 13 VCC Positive Power Supply: Bypass with 0.1µF0.01µF low ESR capacitors as close to the pins as possible. 12, 11, 10, 9 Q0, /Q0, /Q1, Q1 CML Differential Output Pairs: Differential buffered output copy of the selected input signal. The CML output swing is typically 400mV across 100Ω. Unused output pairs may be left floating with no impact on jitter. See “CML Output Termination” section. TRUTH TABLE SEL0 SEL1 Q0 Q1 L L IN0 IN0 L H IN0 IN1 H L IN1 IN0 H H IN1 IN1 M9999-082807 2 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58023U Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (V )..................................–0.5V to +4.0V Supply Voltage (V )............................+2.375V to +3.60V CC CC Input Voltage (V ) .........................................–0.5V to V Ambient Temperature (T ).........................–40°C to +85°C IN CC A CML Output Voltage (V )......... V –1.0V to V +0.5V Package Thermal Resistance(3) OUT CC CC Current (VT) MLF® (θJA) Source or Sink Current on V pin...................±100mA Still-Air.............................................................60°C/W T 500lfpm............................................................54°C/W Input Current (V ) T MLF® (ψ ) Source or Sink Current on IN, /IN.....................±50mA JB Junction-to-board ............................................38°C/W Lead Temperature (soldering, 20 sec.).....................260°C Storage Temperature (T ) ...........................–65°C +150°C S DC ELECTRICAL CHARACTERISTICS(4) T = –40°C to +85°C. A Symbol Parameter Condition Min Typ Max Units V Power Supply Voltage 2.5V nominal 2.375 2.5 2.625 V CC 3.3V nominal 3.0 3.3 3.60 V I Power Supply Current V = max., current through internal 100 130 mA CC CC 50Ω source termination resistor included. V Input HIGH Voltage IN, /IN, Note 5 V –1.6 V V IH CC CC V Input LOW Voltage IN, /IN 0 V –0.1 V IL IH V Input Voltage Swing IN, /IN; see Figure 1a. 0.1 1.7 V IN V Differential Input Swing IN, /IN; see Figure 1b. 0.2 V DIFF_IN R IN-to-V Resistance 40 50 60 Ω IN T IN to V 1.28 V T LVTTL/CMOS DC ELECTRICAL CHARACTERISTICS(4) V = 2.5V ±5% or 3.3V ±10%; T = -40°C to 85°C CC A Symbol Parameter Condition Min Typ Max Units V Input HIGH Voltage 2.0 V IH V Input LOW Voltage 0.8 V IL I Input HIGH Current 40 µA IH I Input LOW Current –300 µA IL Notes: 1. Permanent device damage may occur if ratings in the “Absolute Maximum Ratings” section are exceeded. This is a stress rating only and functional operation is not implied for 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. Thermal performance assumes exposed pad is soldered (or equivalent) to the device's most negative potential (GND) on the PCB. θJA uses 4-layer in still-air, unless otherwise stated. 4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. 5. V (min) not lower than 1.2V. IH M9999-082807 3 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58023U CML OUTPUT DC ELECTRICAL CHARACTERISTICS(6) V = +3.3V ±10% or +2.5V ±5%; R = 100Ω across each output pair; T = –40°C to +85°C, unless otherwise stated. CC L A Symbol Parameter Condition Min Typ Max Units V Output HIGH Voltage Q0, /Q0; Q1, /Q1 V –0.020 V V OH CC CC V Output Voltage Swing Q0, /Q0; Q1, /Q1; see Figure 1a. 325 400 500 mV OUT V Differential Voltage Swing Q0, /Q0; Q1, /Q1; see Figure 1b. 650 800 1000 mV DIFF_OUT R Output Source Impedance Q0, /Q0; Q1, /Q1 40 50 60 Ω OUT Notes: 6. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established AC ELECTRICAL CHARACTERISTICS(7) V = 2.5V ±5% or 3.3V ±10%; R = 100Ω across each output pair; T = –40°C to +85°C, unless otherwise stated. CC L A Symbol Parameter Condition Min Typ Max Units f Maximum Operating Frequency V ≥ 100mV; V ≥ 200mV Clock 6 GHz MAX IN OUT NRZ Data 10.7 Gbps t Propagation Delay IN-to-Q 135 285 ps pd SEL-to-Q 100 400 ps t Channel-to-Channel Skew SKEW Note 8 20 ps (Within Bank) Part-to-Part Skew Note 9 75 ps t Clock Cycle-to-Cycle Jitter Note 10 1 ps JITTER RMS Total Jitter Note 11 10 ps PP Data Random Jitter Note 12 1 ps RMS Deterministic Jitter Note 13 10 ps PP Crosstalk Induced Jitter Note 14 0.7 ps (Adjacent Channel) RMS t, t Output Rise/Fall Time 20% to 80%, at full swing. 25 60 ps r f Notes: 7. Measured with 100mV input swing. High frequency AC-parameters are guaranteed by design and characterization. 8. Skew is measured between outputs of the same bank under identical transitions. 9. 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. 10. Cycle-to-cycle jitter definition: The variation of periods between adjacent cycles, T –T where T is the time between rising edges of the output n n–1 signal. 11. 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. 12. Random jitter is measured with a K28.7 comma detect character pattern, measured at 2.5Gbps–3.2Gbps. 13. Deterministic jitter is measured at 2.5Gbps–3.2Gbps with both K28.5 and 223–1 PRBS pattern. 14. Crosstalk induced jitter is defined as the added jitter that results from signals applied to two adjacent channels. It is measured at the output while applying similar, differential clock frequencies that are asynchronous with respect to each other at inputs. M9999-082807 4 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58023U SINGLE-ENDED AND DIFFERENTIAL SWINGS V , V , VIN Typ. 400mV VDIFF_IN (Typ. 800mV) OUT DIFF_OUT Figure 1a. Single-Ended Voltage Swing Figure 1b. Differential Voltage Swing TIMING DIAGRAM /IN V = 400mV (typ.) OUT (50Ω load) IN t t pd pd /Q V = 400mV (typ.) OUT (50Ω load) Q Figure 2a. AC Timing Diagram IN-to-Q V /2 V /2 CC CC SEL t t pd pd /Q V = 400mV (typ.) OUT (50Ω load) Q IN0, /IN1 = LOW, /IN0, IN1 = HIGH Figure 2b. AC Timing Diagram SEL-to-Q M9999-082807 5 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58023U TYPICAL OPERATING CHARACTERISTICS V = 2.5V, V = 100mV, T = 25°C, unless otherwise noted. CC IN A Frequency vs. Propagation Delay vs. Amplitude Temperature 500 205 450 s)204 p V)345000 AY (220023 m L E (300 DE201 UD250 ON 200 MPLIT125000 AGATI119989 A100 OP197 50 PR196 0 195 0 2000 4000 6000 8000 10000 -60-40-20 0 20 40 60 80 100 FREQUENCY (MHz) TEMPERATURE (°C) Propagation Delay vs. Within Device Skew vs. Input Voltage Swing Temperature 215 3.5 ps)210 3 AY (205 V)2.5 L m ON DE129050 UDE ( 2 ATI190 LIT1.5 G P PA185 AM 1 O R180 0.5 P 175 0 0 200 400 600 800 10001200 -60-40-20 0 20 40 60 80 100 INPUT VOLTAGE SWING (mV) TEMPERATURE (°C) M9999-082807 6 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58023U FUNCTIONAL CHARACTERISTICS V = 2.5V, V = 100mV, T = 25°C, unless otherwise noted. CC IN A 5Gbps Output 2.5GHz Output 223–1 PRBS ev.) ev.) ddi ddi plitumV/ plitumV/ m0 m0 A0 A0 1 1 ( ( TIME (50ps/div.) TIME (50ps/div.) 1.25GHz Output 200MHz Output ev.) ev.) ddi ddi plitumV/ plitumV/ m0 m0 A10 A10 ( ( TIME (100ps/div.) TIME (600ps/div.) M9999-082807 7 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58023U INPUT STAGE V CC IN 50Ω V T GND 50Ω /IN Figure 3. Simplified Differential Input Buffer INPUT INTERFACE APPLICATIONS V V V V CC CC V V CC CC CC CC IN IN IN LVPECL CML CML /IN /IN /IN SY58023U SY58023U SY58023U NC VT R1 0.01µF VT 0.01µF VT Rpd R2 For 2.5V, R1 = 1kΩ, R2 = 1.1kΩ. For VCC = 2.5V, Rpd = 19Ω. Option:may connect VT to VCC. For 3.3V, R1 = 649Ω, R2 = 1kΩ. For VCC = 3.3V, Rpd = 50Ω. Figure 4a. DC-Coupled CML Figure 4b. AC-Coupled CML Figure 4c. DC-Coupled LVPECL Input Interface Input Interface Input Interface V V CC CC IN V V CC CC LVPECL /IN SY58023U IN Rpd Rpd LVDS /IN R1 0.01µF V SY58023U T R2 NC V T For V = 2.5V, R = 50Ω, R1 = 1kΩ, R2 = 1.1kΩ. CC pd For V = 3.3V, R = 100Ω, R1 = 649Ω, R2 = 1kΩ. CC pd Figure 4d. AC-Coupled LVPECL Figure 4e. LVDS Input Interface Input Interface M9999-082807 8 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58023U CML OUTPUT TERMINATION Figures 5 and Figure 6 illustrates how to terminate a configuration. All outputs of the SY58023U are 50Ω with a CML output using both the AC-coupled and DC-coupled 16mA current source. V CC V CC 50Ω 50Ω Q DC-bias per application 50Ω 50Ω Q 50Ω 100Ω 50Ω /Q /Q 16mA 16mA GND GND Figure 5. CML DC-Coupled Termination Figure 6. CML AC-Coupled Termination RELATED PRODUCT AND SUPPORT DOCUMENTATION Part Number Function Data Sheet Link SY58023U Ultra-low Jitter 2×2 Crosspoint Switch http://www.micrel.com/product-info/products/sy58023u.shtml w/CML Outputs and Internal I/O Termination SY58024U Ultra-low Jitter Dual 2×2 Crosspoint Switch http://www.micrel.com/product-info/products/sy58024u.shtml w/CML Outputs and Internal I/O Termination 16-MLF® Manufactering Guidelines www.amkor.com/products/notes_papers/MLF_AppNote.pdf Exposed Pad Application Note HBW Solutions http://www.micrel.com/product-info/as/solutions.shtml M9999-082807 9 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58023U 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 10 hbwhelp@micrel.com or (408) 955-1690

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