Precision Edge® ULTRA-PRECISION Micrel, Inc. Precision ESdY5g8e0®18U DIFFERENTIAL LVPECL 2:1 MUX SY58018U with INTERNAL TERMINATION FEATURES Guaranteed AC performance over temperature and voltage: Precision Edge® • DC to5Gbps data throughput • DC to >4GHz f (clock) MAX DESCRIPTION • <260ps propagation delay • <110ps t /t times r f The SY58018U is a 2.5V/3.3V precision, high-speed, 2:1 Ultra-low crosstalk-induced jitter: 0.7ps RMS differential MUX capable of handling clocks up to 4GHz Ultra-low jitter design: and data up to 5Gbps. • <1ps random jitter RMS The differential input includes Micrel’s unique, 3-pin input • <10ps deterministic jitter PP termination architecture that allows customers to interface • <10ps total jitter (clock) PP to any differential signal (AC- or DC-coupled) as small as Unique input termination and VT pin accepts DC- 100mV without any level shifting or termination resistor and AC-coupled inputs (CML, PECL, LVDS) networks in the signal path. The outputs are 800mV, 100k 800mV (100k) LVPECL output swing compatible, LVPECL, with extremely fast rise/fall times guaranteed to be less than 110ps. Power supply 2.5V ±5% or 3.3V ±10% The SY58018U operates from a 2.5V ±5% supply or a –40°C to +85°C temperature range 3.3V ±10% supply and is guaranteed over the full industrial Available in 16-pin (3mm x 3mm) QFN package temperature range of –40°C to +85°C. For applications that require CML outputs, consider the SY58017U or for 400mV LVPECL outputs the SY58019U. The SY58018U is part of APPLICATIONS Micrel’s high-speed, Precision Edge® product line. All support documentation can be found on Micrel’s web Redundant clock distribution site at www.micrel.com. SONET/SDH clock/data distribution Loopback Fibre Channel distribution FUNCTIONAL BLOCK DIAGRAM TYPICAL PERFORMANCE IN0 5Gbps Output 50Ω V 0 T0 50Ω /IN0 Q0 MUX ngv.) IN1 /Q0 widi SV/ 50Ω ut m V 1 S p0 T150Ω Out(20 /IN1 SEL (TTL/CMOS) TIME (25ps/div.) (223—1PRBS) Precision Edge and AnyGate are registered trademarks of Micrel, Inc. M9999-082707 Rev.: D Amendment: /0 hbwhelp@micrel.com or (408) 955-1690 1 Issue Date: August 2007

Precision Edge® Micrel, Inc. SY58018U PACKAGE/ORDERING INFORMATION Ordering Information(1) VT0 GND GND VCC Package Operating Package Lead Part Number Type Range Marking Finish 16 15 14 13 SY58018UMG QFN-16 Industrial 018U with Pb-Free IN0 1 12 Q Pb-Free bar-line indicator NiPdAu /IN0 2 11 GND SY58018UMGTR(2) QFN-16 Industrial 018U with Pb-Free IN1 3 10 GND Pb-Free bar-line indicator NiPdAu /IN1 4 9 /Q Notes: 5 6 7 8 1. Contact factory for die availability. Dice are guaranteed at T = 25°C, DC electricals only. A 2. Tape and Reel. 1 L C C VT SE N VC 16-Pin QFN PIN DESCRIPTION Pin Number Pin Name Pin Function 1, 2 IN0, /IN0 Differential Input: These input pairs are the differential signal inputs to the device. They 3, 4 IN1, /IN1 accept differential AC- or DC-coupled signals as small as 100mV. Each pin of a pair internally terminates to a V pin through 50ý. Note that these inputs will default to an indeterminate T 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 V T pin. The V and V pins provide a center-tap to a termination network for maximum T0 T1 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 25ký 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 0.1µF™™ 0.01µF low ESR capacitors. 0.01µF capacitor should be as close to V pin as possible. CC 12, 9 Q, /Q Differential Outputs: This 100k compatible LVPECL output pair is the output of the device. Normally terminate with 50ý to V – 2V. See “Output Interface Applications” section. It is CC a logic function of the IN0, IN1, and SEL inputs. Please refer to the “Truth Table” for details. 10, 11, 14, 15 GND, Ground. Ground pins and exposed pad must be connected to the same ground plane. Exposed Pad TRUTH TABLE SEL Output 0 CH0 Input Selected 1 CH1 Input Selected M9999-082707 2 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58018U Absolute Maximum Ratings(1) Operating Ratings(2) Power Supply Voltage (VCC ) ......................–0.5V to +4.0V Power Supply Voltage (VCC) ...............+2.375V to +2.625V Input Voltage (V )..........................................–0.5V to V .............................................................+3.0V to +3.6V IN CC LVPECL Output Current (I ) Ambient Temperature Range (T )..............–40°C to +85°C OUT A Continuous..............................................................50mA Package Thermal Resistance(4) Surge ....................................................................100mA QFN (θ ) JA Termination Current(3) Still-Air............................................................. 60°C/W Source or Sink Current on V pin.......................±100mA QFN (ψ ) T JB Input Current Junction-to-Board............................................ 38°C/W Source or Sink Current on IN, /IN pin...................±50mA Lead Temperature (soldering, 20 sec.) .....................260°C Storage Temperature Range (T )...........–65°C to +150°C S DC ELECTRICAL CHARACTERISTICS(5) T = –40°C to +85°C, unless otherwise stated. A Symbol Parameter Condition Min Typ Max Units V Power Supply Voltage V = 2.5V 2.375 2.5 2.625 V CC CC V = 3.3V 3.0 3.3 3.6 V CC I Power Supply Current No load, max. V 50 65 mA CC CC R Differential Input Resistance 80 100 120 Ω DIFF_IN (IN0-to-/IN0, IN1-to-/IN1) R Input Resistance 40 50 60 Ω IN (IN0-to-V , /IN0-to-V , T0 T0 IN1-to-V , /IN1-to-V ) T1 T1 V Input HIGH Voltage Note 6 V − 1.6 V V IH CC CC (IN0, /IN0, IN1, /IN1) V Input LOW Voltage 0 V – 0.1 V IL IH (IN0, /IN0, IN1, /IN1) V Input Voltage Swing See Figure 1a 0.1 1.7 V IN (IN0, /IN0, IN1, /IN1) V Differential Input Voltage Swing See Figure 1b 0.2 V DIFF_IN |IN0, /IN0|, |IN1, /IN1| V IN to V 1.28 V T IN T (IN0, /IN0, IN1, /IN1) Notes: 1. Permanent device damage may occur if absolute maximum ratingsare 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. ψ uses JB 4-layerθJA in still-air number, 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 3 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58018U LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS(7) V = 2.5V ±5% or 3.3V ±10%; T = –40°C to +85°C; R = 50ý to V –2V, unless otherwise stated. CC A L CC Symbol Parameter Condition Min Typ Max Units V Output HIGH Voltage V (cid:3)–(cid:3)1.145 V (cid:3)–(cid:3) 0.895 V OH CC CC Q, /Q V Output LOW Voltage V (cid:3)–(cid:3)1.945 V (cid:3)–(cid:3)1.695 V OL CC CC Q, /Q V Output Differential Swing See Figure 1a 550 800 mV OUT Q, /Q V Differential Output Voltage Swing See Figure 1b 1100 1600 mV DIFF_OUT Q, /Q LVTTL/CMOS DC ELECTRICAL CHARACTERISTICS(7) 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 Note: 7. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. M9999-082707 4 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58018U AC ELECTRICAL CHARACTERISTICS(8) V = 2.5V ±5% or 3.3V ±10%; T = –40°C to 85°C, R = 50ý to V – 2V, unless otherwise stated. CC A L CC Symbol Parameter Condition Min Typ Max Units f Maximum Operating Frequency NRZ Data 5 Gbps MAX V ž 400mV Clock 4 GHz OUT t Differential Propagation Delay pd (IN0 or IN1-to-Q) 110 190 240 ps (SEL-to-Q) 50 180 350 ps t Tempco Differential Propagation Delay 75 fs/°C pd Temperature Coefficient t Input-to-Input Skew Note 9 4 15 ps SKEW Part-to-Part Skew Note 10 100 ps t Data Random Jitter Note 11 1 ps JITTER RMS Deterministic Jitter Note 12 10 ps PP Clock Cycle-to-Cycle Jitter Note 13 1 ps RMS Total Jitter Note 14 10 ps PP Crosstalk-Induced Jitter Note 15 0.7 ps RMS t, t Output Rise/Fall Time 20% to 80%, at full swing 35 75 110 ps r f Notes: 8. High frequency AC parameters are guaranteed by design and characterization. 9. 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-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 10.7Gbps and 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 5 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58018U SINGLE-ENDED AND DIFFERENTIAL SWINGS V , VVIN, 800mV (Typ.) VDDIIFFFF__OINUT 1600mV (Typ.) OUT Figure 1a. Single-Ended Voltage Swing Figure 1b. Differential Voltage Swing TIMING DIAGRAMS IN0 /IN0 t pd Q /Q SEL t t pd pd Q /Q M9999-082707 6 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58018U TYPICAL OPERATING CHARACTERISTICS V = 3.3V, V = 100mV, T = 25°C, unless otherwise stated. CC IN A Propagation Delay Propagation Delay vs. Temperature vs. Input Voltage Swing 188 166 s)186 s) p p165 Y (184 Y ( A A L182 L164 E E D D ON 180 ON 163 TI178 TI GA176 GA162 A A P174 P O O161 R172 R P P 170 160 -40 -20 0 20 40 60 80 100120 100 200 300 400 500 600 700 800 TEMPERATURE (°C) INPUT VOLTAGE SWING (mV) Output Amplitude vs. Frequency 800 V)700 m E (600 D U500 T PLI400 M A300 T U P200 T U100 O 0 0 1 2 3 4 5 6 7 8 9 10 FREQUENCY (GHz) M9999-082707 7 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58018U TYPICAL OPERATING CHARACTERISTICS V = 3.3V, V = 100mV, T = 25°C, unless otherwise stated. CC IN A 200MHz Output 1.25GHz Output ngv.) ngv.) widi widi SV/ SV/ ut m ut m p0 p0 Out(20 Out(20 TIME (600ps/div.) TIME (100ps/div.) (cid:0)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:8)(cid:9)(cid:10)(cid:6)(cid:9)(cid:10) (cid:0)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:8)(cid:9)(cid:10)(cid:6)(cid:9)(cid:10) (cid:26)(cid:12)(cid:27)(cid:28)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15) (cid:26)(cid:12)(cid:27)(cid:28)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15) (cid:22)(cid:30)(cid:10) (cid:22)(cid:30)(cid:10) (cid:24)(cid:25)(cid:29) (cid:24)(cid:25)(cid:29) (cid:8)(cid:7) (cid:8)(cid:7) (cid:23)(cid:24)(cid:25)(cid:5)(cid:16)(cid:7) (cid:23)(cid:24)(cid:25)(cid:5)(cid:16)(cid:7) (cid:0)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:7)(cid:8)(cid:9)(cid:10)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15) (cid:0)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:7)(cid:8)(cid:9)(cid:10)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15) (cid:5)(cid:16)(cid:16)(cid:17)(cid:18)(cid:6)(cid:19)(cid:20)(cid:21)(cid:22)(cid:15) (cid:5)(cid:16)(cid:16)(cid:17)(cid:18)(cid:6)(cid:19)(cid:20)(cid:21)(cid:22)(cid:15) 5Gbps Output ngv.) widi SV/ ut m p0 Out(20 TIME (25ps/div.) (223—1PRBS) M9999-082707 8 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58018U INPUT AND OUTPUT STAGES V CC V CC IN 50Ω V T GND 50Ω /Q /IN Q Figure 2a. Simplified Differential Input Stage Figure 2b. Simplified LVPECL Output Stage INPUT INTERFACE APPLICATIONS V CC V CC V CC IN LVPECL IN /IN IN PECL SY58018U CML /IN /IN GND R R SY58018U VCC VT pd pd SY58018U 0.01μF GND GND R pd V —1.4V CC GND VT NC VT For VCC = 3.3V, Rpd= 50Ω For 3.3V, Rpd= 100Ω For VCC = 2.5V, Rpd= 19Ω For 2.5V, Rpd= 50Ω (Option: May connect VT to VCC) Figure 3a. DC-Coupled Figure 3b. AC-Coupled Figure 3c. DC-Coupled LVPECL Interface LVPECL Interface CML Interface V CC V CC IN CML IN /IN LVDS SY58018U /IN GND SY58018U VCC—1.4V VT GND NC V T Figure 3d. AC-Coupled CML Interface Figure 3e. LVDS Interface M9999-082707 9 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58018U OUTPUT INTERFACE APPLICATIONS +3.3V +3.3V +3.3V R1 R1 Z= 50Ω +3.3V 130Ω 130Ω +3.3V Z = 50Ω O Z= 50Ω Z = 50Ω O 50Ω 50Ω source Destination R2 R2 82Ω 82Ω VCC For 3.3V, Rb= 50Ω Rb C1 For 2.5V, R = 19Ω b 0.01µF (optional) Figure 4a. Parallel Thevenin-Equivalent Figure 4b. Three-Resistor “Y” Termination Termination +3.3V R1 +3.3V 130Ω Z = 50Ω O 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 http://www.micrel.com/product-info/products/sy58016l.shtml with Internal I/O Termination SY58017U Ultra Precision Differential CML 2:1 Mux with http://www.micrel.com/product-info/products/sy58017u.shtml Internal I/O Termination SY58019U Ultra Precision Differential 400mV LVPECL http://www.micrel.com/product-info/products/sy58019u.shtml 2:1 MUXwith Internal Termination SY58025U 10.7Gbps Dual 2:1 CML MUX with http://www.micrel.com/product-info/products/sy58025u.shtml Internal I/O Termination SY58026U 5Gbps Dual 2:1 MUXwith Internal Termination http://www.micrel.com/product-info/products/sy58026u.shtml SY58027U 10.7Gbps Dual 2:1 400mV LVPECL MUXwith http://www.micrel.com/product-info/products/sy58027u.shtml Internal Termination SY58051U 10.7Gbps AnyGate® with Internal Input and Output http://www.micrel.com/product-info/products/sy58051u.shtml Termination SY58052U 10Gbps Clock/Data Retimer with 50Ω Input Termination http://www.micrel.com/product-info/products/sy58052u.shtml HBW Solutions New Products and Applications www.micrel.com/product-info/products/solutions.shtml M9999-082707 10 hbwhelp@micrel.com or (408) 955-1690

Precision Edge® Micrel, Inc. SY58018U 16-PIN QFN (QFN-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 QFN 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. M9999-082707 11 hbwhelp@micrel.com or (408) 955-1690

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