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Micrel, Inc.
ULTRA-PRECISION DIFFERENTIAL LVPECL 2:1 MUX with INTERNAL TERMINATION
Precision Edge(R) SY58018U Precision Edge(R)
SY58018U
FEATURES
s Guaranteed AC performance over temperature and voltage: * DC to 5Gbps data throughput * DC to > 4GHz fMAX (clock) * < 260ps propagation delay * < 110ps tr / tf times s Ultra-low crosstalk-induced jitter: 0.7psRMS s Ultra-low jitter design: * < 1psRMS random jitter * < 10psPP deterministic jitter * < 10psPP total jitter (clock) s Unique input termination and VT pin accepts DCand AC-coupled inputs (CML, PECL, LVDS) s 800mV (100k) LVPECL output swing s Power supply 2.5V 5% or 3.3V 10% s -40C to +85C temperature range s Available in 16-pin (3mm x 3mm) MLF(R) package
Precision Edge(R)
DESCRIPTION
The SY58018U is a 2.5V/3.3V precision, high-speed, 2:1 differential MUX capable of handling clocks up to 4GHz and data up to 5Gbps. 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 800mV, 100k compatible, LVPECL, with extremely fast rise/fall times guaranteed to be less than 110ps. The SY58018U operates from a 2.5V 5% supply or a 3.3V 10% supply and is guaranteed over the full industrial temperature range of -40C to +85C. For applications that require CML outputs, consider the SY58017U or for 400mV LVPECL outputs the SY58019U. The SY58018U is part of Micrel's high-speed, Precision Edge(R) product line. All support documentation can be found on Micrel's web site at www.micrel.com.
APPLICATIONS
s s s s Redundant clock distribution SONET/SDH clock/data distribution Loopback Fibre Channel distribution
FUNCTIONAL BLOCK DIAGRAM
IN0 50 VT0 50 /IN0 MUX IN1 50 VT1 50 /IN1 1 S 0
TYPICAL PERFORMANCE
5Gbps Output
/Q0
SEL (TTL/CMOS)
Output Swing (200mV/div.)
Q0
TIME (25ps/div.) (223--1PRBS)
Precision Edge and AnyGate are registered trademarsk of Micrel, Inc. MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc. M9999-020207 hbwhelp@micrel.com or (408) 955-1690
Rev.: C Amendment: /0
1
Issue Date: February 2007
Micrel, Inc.
Precision Edge(R) SY58018U
PACKAGE/ORDERING INFORMATION
Ordering Information(1)
GND GND VCC VT0
Part Number
16 15 14 13 12 11 10 9 5 6 7 8
Package Type MLF-16 MLF-16 MLF-16 MLF-16
Operating Range Industrial Industrial Industrial Industrial
Package Marking 018U 018U 018U with Pb-Free bar-line indicator 018U with Pb-Free bar-line indicator
Lead Finish Sn-Pb Sn-Pb Pb-Free NiPdAu Pb-Free NiPdAu
SY58018UMI
Q GND GND /Q
IN0 /IN0 IN1 /IN1
1 2 3 4
SY58018UMITR(2) SY58018UMG(3) SY58018UMGTR(2, 3)
16-Pin MLF(R)
Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25C, DC electricals only. 2. Tape and Reel. 3. Pb-Free package recommended for new designs.
SEL
VT1
PIN DESCRIPTION
Pin Number 1, 2 3, 4 Pin Name IN0, /IN0 IN1, /IN1 Pin Function 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 50. Note that these inputs will default to an indeterminate state if left open. Please refer to the "Input Interface Applications" section for more details. 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. This single-ended TTL/CMOS compatible input selects the inputs to the multiplexer. Note that this input is internally connected to a 25k pull-up resistor and will default to a logic HIGH state if left open. No connect. Positive Power Supply: Bypass with 0.1F0.01F low ESR capacitors. 0.01F capacitor should be as close to VCC pin as possible. Differential Outputs: This 100k compatible LVPECL output pair is the output of the device. Normally terminate with 50 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. Ground. Ground pins and exposed pad must be connected to the same ground plane.
16, 5
6
VCC
NC
VT0, VT1
SEL
7 8, 13 12, 9
NC VCC Q, /Q
10, 11, 14, 15
GND, Exposed Pad
TRUTH TABLE
SEL 0 1 Output CH0 Input Selected CH1 Input Selected
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Micrel, Inc.
Precision Edge(R) SY58018U
Absolute Maximum Ratings(1)
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.) ..................... 260C Storage Temperature Range (TS ) ........... -65C to +150C
Operating Ratings(2)
Power Supply Voltage (VCC) ............... +2.375V to +2.625V ............................................................ +3.0V to +3.6V Ambient Temperature Range (TA) ............. -40C to +85C Package Thermal Resistance(4) MLF(R) (JA) Still-Air ............................................................. 60C/W MLF(R) (JB) Junction-to-Board ............................................ 38C/W
DC ELECTRICAL CHARACTERISTICS(5)
TA= -40C to +85C, unless otherwise stated. Symbol VCC ICC RDIFF_IN RIN Parameter Power Supply Voltage Power Supply Current Differential Input Resistance (IN0-to-/IN0, IN1-to-/IN1) Input Resistance (IN0-to-VT0, /IN0-to-VT0, IN1-to-VT1, /IN1-to-VT1) Input HIGH Voltage (IN0, /IN0, IN1, /IN1) Input LOW Voltage (IN0, /IN0, IN1, /IN1) Input Voltage Swing (IN0, /IN0, IN1, /IN1) Differential Input Voltage Swing |IN0, /IN0|, |IN1, /IN1| IN to VT (IN0, /IN0, IN1, /IN1) See Figure 1a See Figure 1b Condition VCC = 2.5V VCC = 3.3V No load, max. VCC 80 40 Min 2.375 3.0 Typ 2.5 3.3 50 100 50 Max 2.625 3.6 65 120 60 Units V V mA
VIH VIL VIN VDIFF_IN VT IN
Notes:
VCC - 1.2 0 100 200
VCC VIH - 0.1 1700
V V mV mV
1.28
V
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. JB uses 4-layer JA 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.
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Micrel, Inc.
Precision Edge(R) SY58018U
LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS(7)
VCC = 2.5V 5% or 3.3V 10%; TA= -40C to +85C; RL = 50 to VCC-2V, unless otherwise stated. Symbol VOH VOL VOUT VDIFF_OUT Parameter Output HIGH Voltage Q, /Q Output LOW Voltage Q, /Q Output Differential Swing Q, /Q Differential Output Voltage Swing Q, /Q See Figure 1a See Figure 1b Condition Min VCC - 1.145 VCC - 1.945 550 1100 800 1600 Typ Max VCC - 0.895 VCC - 1.695 Units V V mV mV
LVTTL/CMOS DC ELECTRICAL CHARACTERISTICS(7)
VCC = 2.5V 5% or 3.3V 10%; TA= -40C to 85C Symbol VIH VIL IIH IIL
Note: 7. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
Parameter Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current
Condition
Min 2.0
Typ
Max
Units V
0.8 40 -300
V A A
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Micrel, Inc.
Precision Edge(R) SY58018U
AC ELECTRICAL CHARACTERISTICS(8)
VCC = 2.5V 5% or 3.3V 10%; TA= -40C to 85C, RL = 50 to VCC - 2V, unless otherwise stated. Symbol fMAX tpd Parameter Maximum Operating Frequency VOUT 400mV Differential Propagation Delay (IN0 or IN1-to-Q) (SEL-to-Q) Differential Propagation Delay Temperature Coefficient Input-to-Input Skew Part-to-Part Skew tJITTER Data Clock Random Jitter Deterministic Jitter Cycle-to-Cycle Jitter Total Jitter Crosstalk-Induced Jitter Note 15 tr, tf
Notes: 8. 9. High frequency AC parameters are guaranteed by design and characterization. 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.
Condition NRZ Data Clock
Min 5
Typ
Max
Units Gbps
4 110 50 190 180 75 240 350
GHz ps ps fs/C 15 100 1 10 1 10 0.7 ps ps psRMS psPP psRMS psPP psRMS ps
tpd Tempco tSKEW
Note 9 Note 10 Note 11 Note 12 Note 13 Note 14
4
Output Rise/Fall Time
20% to 80%, at full swing
35
75
110
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.
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Micrel, Inc.
Precision Edge(R) SY58018U
SINGLE-ENDED AND DIFFERENTIAL SWINGS
VIN, VOUT 800mV (Typ.)
VDIFF_IN, VDIFF_OUT 1600mV (Typ.)
Figure 1a. Single-Ended Voltage Swing
Figure 1b. Differential Voltage Swing
TIMING DIAGRAMS
IN0 /IN0 tpd Q /Q
SEL tpd Q /Q tpd
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Micrel, Inc.
Precision Edge(R) SY58018U
TYPICAL OPERATING CHARACTERISTICS
VCC = 3.3V, VIN = 100mV, TA = 25C, unless otherwise stated.
Propagation Delay vs. Temperature
188 PROPAGATION DELAY (ps) 186 184 182 180 178 176 174 172 170 -40 -20 0 20 40 60 80 100 120 PROPAGATION DELAY (ps)
Propagation Delay vs. Input Voltage Swing
166 165 164 163 162 161 160 100 200 300 400 500 600 700 800 INPUT VOLTAGE SWING (mV)
TEMPERATURE (C)
Output Amplitude vs. Frequency
800
OUTPUT AMPLITUDE (mV)
700 600 500 400 300 200 100 0 0 1 2 3 4 5 6 7 8 9 10 FREQUENCY (GHz)
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Micrel, Inc.
Precision Edge(R) SY58018U
TYPICAL OPERATING CHARACTERISTICS
VCC = 3.3V, VIN = 100mV, TA = 25C, unless otherwise stated.
200MHz Output
1.25GHz Output
Output Swing (200mV/div.)
TIME (600ps/div.)
Output Swing (200mV/div.)
TIME (100ps/div.)
2.5Gbps Output
3.2Gbps Output
Output Swing (200mV/div.)
Output Swing (200mV/div.)
TIME (100ps/div.) (223--1PRBS)
TIME (100ps/div.) (223--1PRBS)
5Gbps Output
Output Swing (200mV/div.)
TIME (25ps/div.) (223--1PRBS)
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Micrel, Inc.
Precision Edge(R) SY58018U
INPUT AND OUTPUT STAGES
VCC
VCC
IN 50 VT GND 50 /IN
/Q Q
Figure 2a. Simplified Differential Input Stage
Figure 2b. Simplified LVPECL Output Stage
INPUT INTERFACE APPLICATIONS
VCC VCC IN
LVPECL
VCC IN
/IN SY58018U GND VCC 0.01F Rpd VT
PECL /IN Rpd GND GND VCC --1.4V VT Rpd SY58018U
IN CML /IN SY58018U GND NC VT
For VCC = 3.3V, Rpd = 50 For VCC = 2.5V, Rpd = 19
For 3.3V, Rpd = 100 For 2.5V, Rpd = 50
(Option: May connect VT to VCC)
Figure 3a. DC-Coupled LVPECL Interface
VCC
Figure 3b. AC-Coupled LVPECL Interface
Figure 3c. DC-Coupled CML Interface
VCC
IN CML /IN
LVDS IN
SY58018U GND VCC --1.4V VT
GND NC
/IN SY58018U
VT
Figure 3d. AC-Coupled CML Interface
Figure 3e. LVDS Interface
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Micrel, Inc.
Precision Edge(R) SY58018U
OUTPUT INTERFACE APPLICATIONS
+3.3V
+3.3V
+3.3V ZO = 50 ZO = 50 R1 130 R1 130 +3.3V
Z = 50 Z = 50 50 50
+3.3V
R2 82
R2 82
source
For 3.3V, Rb = 50 For 2.5V, Rb = 19
Destination Rb
VCC
C1 0.01F (optional)
Figure 4a. Parallel Thevenin-Equivalent Termination
+3.3V R1 130
Figure 4b. Three-Resistor "Y" Termination
+3.3V
ZO = 50
R2 82
Figure 4c. Terminating Unused I/O
RELATED MICREL PRODUCTS AND SUPPORT DOCUMENTATION
Part Number SY58016L SY58017U SY58019U SY58025U SY58026U SY58027U SY58051U SY58052U Function 3.3V 10Gbps Differential CML Line Driver/Receiver with Internal I/O Termination Ultra Precision Differential CML 2:1 Mux with Internal I/O Termination Ultra Precision Differential 400mV LVPECL 2:1 MUXwith Internal Termination 10.7Gbps Dual 2:1 CML MUX with Internal I/O Termination 5Gbps Dual 2:1 MUXwith Internal Termination 10.7Gbps Dual 2:1 400mV LVPECL MUXwith Internal Termination 10.7Gbps AnyGate(R) with Internal Input and Output Termination 10Gbps Clock/Data Retimer with 50 Input Termination MLF(R) Application Note HBW Solutions New Products and Applications Data Sheet Link http://www.micrel.com/product-info/products/sy58016l.shtml http://www.micrel.com/product-info/products/sy58017u.shtml http://www.micrel.com/product-info/products/sy58019u.shtml http://www.micrel.com/product-info/products/sy58025u.shtml http://www.micrel.com/product-info/products/sy58026u.shtml http://www.micrel.com/product-info/products/sy58027u.shtml http://www.micrel.com/product-info/products/sy58051u.shtml http://www.micrel.com/product-info/products/sy58052u.shtml www.amkor.com/products/notes_papers/MLF_AppNote_0902.pdf www.micrel.com/product-info/products/solutions.shtml
M9999-020207 hbwhelp@micrel.com or (408) 955-1690
10
Micrel, Inc.
Precision Edge(R) SY58018U
16-PIN MicroLeadFrame(R) (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(R) Package (Always solder, or equivalent, the exposed pad to the PCB) Package Notes: 1. 2. 3. Package meets Level 2 qualification. All parts are dry-packaged before shipment. Exposed pads must be soldered to a ground for proper thermal management.
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
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. (c) 2005 Micrel, Incorporated. M9999-020207 hbwhelp@micrel.com or (408) 955-1690
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