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Micrel, Inc.
3.3V 2.5Gbps ANY INPUT-to-LVPECL DIFFERENTIAL TRANSLATOR
Precision Edge(R) SY89327L Precision Edge(R)
SY89327L
FEATURES
s Input accepts virtually all logic standards: * Single-ended: SSTL, TTL, CMOS * Differential: LVDS, HSTL, CML s Guaranteed AC performance over temp and voltage: * DC-to >2.5Gbps data rate throughput * DC-to >2.5GHz clock fMAX * < 400ps In-to-Out tpd * < 200ps tr/tf s Ultra-low jitter design: * <1psRMS random jitter * <10psPP deterministic jitter * <1psRMS cycle-to-cycle jitter * <10psPP total jitter (clock) s Low power: 46mW (typ) s 100k LVPECL output s Flow-through pinout and fully differential design s Power supply 3.3V 10% s -40C to +85C temperature range s Available in ultra-small 8-lead 2mm x 2mm MLFTM package Precision Edge(R)
DESCRIPTION
The SY89327L is a fully differential, high-speed translator optimized to accept any logic standard from single-ended TTL/CMOS to differential LVDS, HSTL, or CML and translate it to LVPECL. Translation is guaranteed for speeds up to 2.5Gbps (2.5GHz toggle frequency). The SY89327L does not internally terminate its inputs because different interfacing standards have different termination requirements. The SY89327L is a member of Micrel's Precision Edge(R) family of high-speed logic devices. This family features ultrasmall packaging, as well as high signal integrity and operation at many different supply voltages. All support documentation can be found on Micrel's web site at www.micrel.com.
APPLICATIONS
s s s s High-speed logic Data communications systems Wireless communications systems Telecom systems
FUNCTIONAL BLOCK DIAGRAM
NC ANY IN IN /IN NC
1 2 3 4 8 7 6 5
TYPICAL APPLICATIONS CIRCUIT
VCC Q /Q VEE
100mV Input Swing 800mV Output Swing (LVPECL) Backplane
LVPECL OUT
SY89327L
8-Lead MLFTM (2mm x 2mm)
100mV
800mV LVPECL
Input Waveform
Output Waveform
Precision Edge is a registered trademark of Micrel, Inc. MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc. M9999-072005 hbwhelp@micrel.com or (408) 955-1690
Rev.: B Amendment: /0
1
Issue Date: July 2005
Micrel, Inc.
Precision Edge(R) SY89327L
PACKAGE/ORDERING INFORMATION
Ordering Information
NC IN /IN NC
1 2 3 4 8 7 6 5
VCC Q /Q GND Part Number SY89327LMITR SY89325LMGTR
Package Type MLF-8 MLF-8
Operating Range Industrial Industrial
Package Marking 327 327 with Pb-Free bar-line indicator
Lead Finish Sn-Pb Pb-Free NiPdAu
8-Lead MLFTM
PIN DESCRIPTION
Pin Number 2, 3 Pin Name IN, /IN Pin Function Differential inputs: This input is the differential signal input to the device. This input accepts AC- or DC-coupled signals as small as 100mV. External termination is required. Please refer to the "Input Interface Applications" section for more details. Positive power supply. Bypass with 0.1F0.01F low ESR capacitors. Differential LVPECL Output: Terminate with 50 to VCC-2V. See "Output Interface Applications" section. Output pair is 100k temperature compensated LVPECL compatible. Ground: Ground pin and exposed pad must be connected to the same ground plane. No connect.
8 7, 6 5 1, 4
VCC Q, /Q GND, Exposed Pad NC
FUNCTIONAL DESCRIPTION
Establishing Static Logic Inputs Do not leave unused inputs floating. Tie either the true or complement input to ground. A logic zero is achieved by connecting the complement input to ground with the true input floating. For a TTL input, tie a 2.5k resistor between the complement input and ground. See "Input Interface" section. Input Levels LVDS, CML, and HSTL differential signals may be connected directly to the D inputs. Depending on the actual worst case voltage seen, the SY8327L's performance varies as per the following table:
Input Voltage Range 0 to 2.4V 0 to VCC +0.3V Minimum Voltage Swing 100mV 200mV Maximum Translation Speed 2.5Gbps 1.25Gbps
For LVDS applications, only point-to-point interfaces are supported. Due to the current required by the input structure shown in Figure 1, multi-drop and multi-point architectures are not supported.
VCC
R2 1.5k DIN R1 1.05k /DIN R1 1.05k GND
R2 1.5k
Figure 1. Simplified Input Structure
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Micrel, Inc.
Precision Edge(R) SY89327L
Absolute Maximum Ratings(1)
Supply Voltage (VCC) ................................ --0.5V to + 4.0V Input Voltage (VIN) ......................................... -0.5V to VCC Input Current Source or sink current on IN, /IN .......................... 50mA Lead Temperature (soldering, 20 sec.) ................... +260C Storage Temperature (TS) ...................... -65C to +150C
Operating Ratings(2)
Supply Voltage (VCC) ..................................... 3.0V to 3.6V Ambient Temperature (TA) ......................... -40C to +85C Package Thermal Resistance(3) MLFTM (JA) Still-Air ................................................................. 93C/W 500lfpm ............................................................... 87C/W MLFTM (JB) Junction-to-Board ............................................... 32C/W
DC ELECTRICAL CHARACTERISTICS(4)
TA = -40C to +85C; unless stated. Symbol VCC ICC Parameter Power Supply Power Supply Current No load, max. VCC(5) Condition Min 3.0 Typ 3.3 28 Max 3.6 45 Units V mA
INPUT ELECTRICAL CHARACTERISTICS(4)
VCC = 3.3V 10%; TA = -40C to +85C; RL = 50 to VCC-2V, or equivalent, unless otherwise stated. Symbol VIH VIL VIN Parameter Input HIGH Voltage Input LOW Voltage Input Voltage Swing See Figure 2a, VIH < 2.4V See Figure 2a, VIH < VCC +0.3V Condition VIH min must be 1.2V -0.3 100 200 Min Typ Max VCC+0.3 Units V V mV mV
LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS(4)
VCC = 3.3V 10%; TA = -40C to +85C; RL = 50 to VCC-2V, or equivalent, unless otherwise stated. Symbol VOL VOH VOUT VDIFF-OUT
Notes: 1. Permanent device damage may occur if the "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 the 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. Package Thermal Resistance assumes exposed pad is soldered (or equivalent) to the devices' most negative potential on the PCB. JB uses 4-layer JA 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.
Parameter Output HIGH Voltage Q, /Q Output Common Mode Range Q, /Q Output Voltage Swing Q, /Q Differential Output Voltage Swing Q, /Q
Condition
Min VCC-1.945 VCC-1.145
Typ
Max VCC -1.695 VCC -0.895
Units V V mV mVPP
See Figure 2a See Figure 2b
550 1100
800 1600
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Micrel, Inc.
Precision Edge(R) SY89327L
AC ELECTRICAL CHARACTERISTICS (5)
VCC = 3.3V 10%; TA = -40C to +85C; RL = 50 to VCC-2V, or equivalent, unless otherwise stated. Symbol fMAX tpd tJITTER Parameter Maximum Operating Frequency VOUT 200mV Propagation Delay IN-to-Q, /IN-to-/Q Random Jitter (RJ) Deterministic Jitter (DJ) Total Jitter (TJ) tr, tf
Notes: 5. See "Timing Diagrams" section for definition of parameters. High frequency AC-parameters are guaranteed by design and characterization. 6. RJ is measured with a K28.7 comma detect character pattern, measured at fMAX. 7. DJ is measured at 2.5Gbps, with both K28.5 and 223-1 PRBS pattern. 8. 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.
Condition NRZ Data Clock VIN 100mV Note 6 Note 7 Note 8 At full output swing
Min 2.5
Typ
Max
Units Gbps
2.5 400 1 10 10 200
GHz ps psRMS psPP psPP ps
Rise / Fall Time (20% to 80%) Q, /Q
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Micrel, Inc.
Precision Edge(R) SY89327L
SINGLE-ENDED AND DIFFERENTIAL SWINGS
VDIFF_OUT 1600mV (Typ.)
VOUT 800mV (Typ.)
Figure 2a. Single-Ended Voltage Swing
Figure 2b. Differential Voltage Swing
TIMING DIAGRAM
IN /IN tpd Q /Q
Figure 3. Timing Diagram
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Micrel, Inc.
Precision Edge(R) SY89327L
INPUT INTERFACE APPLICATIONS
VCC(DRIVER) VCC(327) VCC(DRIVER) VCC(DRIVER) LVTTL IN IN /IN SY89327L 2.5k 1% CML 102 1% /IN SY89327L 2.5k 1% VCC(327) VCC(DRIVER) 2.5V LVTTL IN /IN SY89327L 2.3V to 2.7V VCC
Figure 4. 3.3V "TTL"
Figure 5. CML-DC Coupled
VCC(DRIVER)
Figure 6. 2.5V "TTL"
VCC
VCC(DRIVER)
VCC(327)
VCC(DRIVER)
IN PECL /IN SY89327L 51 1% 51 1%
HSTL IN
VCC
IN CML 102 1% /IN SY89327L 3.92k 1%
/IN 50 50
SY89327L
3.92k 1%
VCC--2V
Figure 7. PECL-DC Coupled
VCC
Figure 8. HSTL
Figure 9. CML-AC Coupled Short Lines
VCC(DRIVER)
82 1%
82 1% IN
VCC
VDDQ VCC 105 1% 105 1% IN /IN 100 1% 100 1% SY89327L
CML /IN SY89327L 130 1% 130 1% LVDS 102 1% IN /IN SY89327L VCC
SSTL_2
Figure 10. CML-AC Coupled Long Lines
VDDQ VCC 110 1% 110 1% IN SSTL_3 /IN 90.9 1% 90.9 1% SY89327L
Figure 11. LVDS
Figure 12. SSTL_2
Figure 13. SSTL_3
M9999-072005 hbwhelp@micrel.com or (408) 955-1690
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Micrel, Inc.
Precision Edge(R) SY89327L
RELATED PRODUCT AND SUPPORT DOCUMENTATION
Part Number SY55857L Function 3.3V, 2.5Gbps Any Input-to-LVPECL Dual Translator MLFTM Application Note HBW Solutions New Products and Applications Data Sheet Link www.micrel.com/product-info/products/SY55857L.shtml www.amkor.com/products/notes_papers/MLF_AppNote_0902.pdf www.micrel.com/product-info/products/solutions.shtml
M9999-072005 hbwhelp@micrel.com or (408) 955-1690
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Micrel, Inc.
Precision Edge(R) SY89327L
8 LEAD MicroLeadFrame (MLF-8)
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
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. M9999-072005 hbwhelp@micrel.com or (408) 955-1690
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