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Micrel, Inc.
3.3V/5V 1.5Gbps DIFFERENTIAL CML/PECL/LVPECL-to-LVDS TRANSLATOR
Precision Edge(R) SY89325V Precision Edge(R)
SY89325V
FEATURES
Guaranteed AC performance over temp and voltage: * DC-to >1.5Gbps data rate throughput * >750MHz clock fMAX * <50ps within-device skew Ultra-low jitter design: * <1psRMS random jitter * <10psPP deterministic jitter * <1psRMS cycle-to-cycle jitter * <10psPP total jitter (clock) Accepts CML, PECL, LVPECL inputs 350mV LVDS output swing Power supply 3.3V 10% or 5.0V 10% -40C to +85C temperature range Available in ultra-small (2mm x 2mm) 8-pin MLF(R) package Precision Edge(R)
DESCRIPTION
The SY89325V is a fully differential, CML/PECL/LVPECLto-LVDS translator. It achieves LVDS signaling up to 1.5Gbps and clock rates of 750MHz, depending of the distance and the characteristics of the media and noise coupling sources. LVDS is intended to drive 50 impedance transmission line media such as PCB traces, backplanes, or cables. SY89325V inputs can be terminated with a single resistor between the true and complement pins of the input. The SY89325V is a member of Micrel's Precision Edge(R) family of high-speed logic devices. This family features ultra-small packaging, high signal integrity, and operation at many different supply voltages. For applications that require dual translators, consider the SY55855V. All support documentation can be found on Micrel's web site at www.micrel.com.
APPLICATIONS
High-speed logic Data communications systems Wireless communications systems Telecom systems
FUNCTIONAL BLOCK DIAGRAM
NC CML/PECL/LVPECL IN Input /IN NC
1 2 3 4 8 7 6 5
TYPICAL APPLICATIONS CIRCUIT
VCC Q /Q VEE LVDS Output
Backplane SY89325V
100mV Input Swing
400mV Output Swing
8-Pin
MLF(R)
(2mm x 2mm)
100mV
400mV
Input Waveform
Output Waveform
Precision Edge is a registered trademark of Micrel, Inc. MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc. M9999-051006 hbwhelp@micrel.com or (408) 955-1690
Rev.: C Amendment: /0
1
Issue Date: May 2006
Micrel, Inc.
Precision Edge(R) SY89325V
PACKAGE/ORDERING INFORMATION
NC 1 IN 2 /IN 3 NC 4
8 VCC 7Q 6 /Q 5 GND
Ordering Information
Part Number SY89325VMITR SY89325VMGTR(1)
Note:
Package Type MLF-8 MLF-8
Operating Range Industrial Industrial
Package Marking 325 325 with Pb-Free bar-line indicator
Lead Finish Sn-Pb Pb-Free NiPdAu
8-Pin MLF(R) (MLF-8)
1. Pb-Free package is recommended for new designs.
PIN DESCRIPTION
Pin Number 2, 3 Pin Name IN, /IN Pin Function Differential Inputs: These input pairs are the differential signal inputs to the device. These inputs accept AC- or DC-coupled signals as small as 100mV. External termination is required. Positive power supply. Bypass with 0.1F0.01F low ESR capacitors. Differential LVDS Output: This output is the output of the device. Terminate with 100 across the pair. See "Output Interface Applications" section. 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 NC
M9999-051006 hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
Precision Edge(R) SY89325V
Absolute Maximum Ratings(1)
Supply Voltage (VCC) ................................ -0.5V to + 6.0V Input Voltage (VIN) .............................. -0.5V to VCC +0.5V Input Current Source or sink current on IN, /IN .......................... 50mA CML Output Voltage (VOUT) ........... VCC-1.0V to VCC+0.5V Lead Temperature (soldering, 20 sec.) ................... +260C Storage Temperature (TS) ...................... -65C to +150C
Operating Ratings(2)
Supply Voltage (VCC) .................................. +3.0V to +3.6V ............................................................ +4.5V to +5.0V Ambient Temperature (TA) ........................ -40C to +85C Package Thermal Resistance(3) MLF(R) (JA) Still-Air ................................................................. 93C/W MLF(R) (JB) Junction-to-board ............................................... 60C/W
DC ELECTRICAL CHARACTERISTICS(4)
TA = -40C to +85C; unless stated. Symbol VCC ICC Parameter Power Supply Condition Min 3.0 4.5 Power Supply Current VCC 3.6V 3.6V VCC 5.7V Typ 3.3 5.0 Max 3.6 5.7 50 80 Units V V mA mA
INPUT DC ELECTRICAL CHARACTERISTICS(4)
VCC = 3.3V 10% or 5.0V 10%; TA = -40C to +85C. Symbol VIH VIL VIN VDIFF_IN Parameter Input HIGH Voltage (IN, /IN) Input LOW Voltage (IN, /IN) Input Voltage Swing (IN, /IN) Differential Input Voltage Swing |IN - /IN| See Figure 1a. See Figure 1b. Condition Min 1.6 1.5 100 200 Typ Max VCC VCC -0.1 Units V V mV mV
LVDS OUTPUT DC ELECTRICAL CHARACTERISTICS(4)
VCC = 3.3V 10% or 5.0V 10%; TA = -40C to +85C; RL = 100 across output pair, or equivalent, unless otherwise stated. Symbol VOH VOL VOCM VOCM VOUT VDIFF-OUT
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. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the device's 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. M9999-051006 hbwhelp@micrel.com or (408) 955-1690
Parameter Output HIGH Voltage Output LOW Voltage Output Common Mode Voltage Change in Common Mode Voltage Output Voltage Swing Differential Output Voltage Swing
Condition IOH = -4.0mA IOL = 4.0mA
Min
Typ
Max 1.474
Units V V
0.925 1.125 -50 250 500 350 700 1.375 +50
V mV mV mV
3
Micrel, Inc.
Precision Edge(R) SY89325V
AC ELECTRICAL CHARACTERISTICS(5)
VCC = 3.3V 10% or 5.0V 10%; TA = -40C to +85C; output loaded with 100 across the output pair, or equivalent unless otherwise stated. Symbol fMAX tpd tJITTER Parameter Maximum Operating Frequency Condition VOUT 200mV VIN 100mV Note 6 Note 7 Note 8 Note 9 At full output swing. 100 NRZ Data Clock Propagation Delay IN-to-Q 300 Min 1.5 750 700 1 10 1 10 300 Typ Max Units Gbps MHz ps psRMS psPP psRMS psPP ps
Random Jitter (RJ) Deterministic Jitter (DJ) Cycle-to-Cycle Jitter Total Jitter (TJ)
tr, tf
Notes:
Rise / Fall Time (20% to 80%) Q, /Q
5. Measured with 100mV input swing. See "Timing Diagrams" section for definition of parameters. High-frequency AC-parameters are guaranteed by design and characterization. 6. Random jitter is measured with a K28.7 comma detect character pattern, measured at 1.5Gbps. 7. Deterministic jitter is measured at fMAX, with both K28.5 and 223 -1 PRBS pattern 8. 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. 9. 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.
SINGLE-ENDED AND DIFFERENTIAL SWINGS
VIN, VOUT 350mV (Typ.)
VDIFF_IN, VDIFF_OUT 700mV (Typ.)
Figure 1a. Single-Ended Voltage Swing
Figure 1b. Differential Voltage Swing
TIMING DIAGRAM
IN /IN tpd Q /Q
Figure 2. Timing Diagram
M9999-051006 hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
Precision Edge(R) SY89325V
INPUT INTERFACE APPLICATIONS
VCC
VCC (DRIVER)
VCC
VCC (DRIVER) 82 82 IN CML /IN VCC
IN CML 100 /IN SY89325V
Note: VCC of SY89325V must be VCC (DRIVER)
SY89325V 130 130
Figure 3. CML-DC Coupled
VCC (DRIVER)
VCC
Figure 5. CML-AC Coupled
IN PECL /IN SY89325V 50 50
LVDS 100 IN /IN SY89325V VCC
VCC-2V
Note: VCC of SY89325V must be VCC (DRIVER)
Figure 6. LVDS
Figure 4. PECL-DC Coupled
M9999-051006 hbwhelp@micrel.com or (408) 955-1690
5
Micrel, Inc.
Precision Edge(R) SY89325V
OUTPUT INTERFACE APPLICATIONS
LVDS specifies a small swing of 350mV typical, on a nominal 1.25V common mode above ground. The common mode voltage has tight limits to permit large variations in ground between an LVDS driver and receiver. Also, change in common mode voltage, as a function of data input, is kept to a minimum, to keep EMI low.
50 VOUT VOH, VOL 100 50 VOCM, VOCM
VOH, VOL
GND
GND
Figure 8a. LVDS Differential Measurement
Figure 8b. LVDS Common Mode Measurement
RELATED PRODUCT AND SUPPORT DOCUMENTATION
Part Number SY55855V HBW Solutions Function Dual CML/PECL/LVPECL-to-LVDS Translator MLF(R) Application Note New Products and Applications Data Sheet Link www.micrel.com/product-info/products/sy55855v.shtml www.amkor.com/products/notes_papers/MLF_AppNote_0902.pdf www.micrel.com/product-info/products/solutions.shtml
M9999-051006 hbwhelp@micrel.com or (408) 955-1690
6
Micrel, Inc.
Precision Edge(R) SY89325V
8 LEAD MicroLeadFrame(R) (MLF-8)
Package EP- Exposed Pad
Die
CompSide Island
Heat Dissipation Heat Dissipation VEE Heavy Copper Plane VEE Heavy Copper Plane
PCB Thermal Consideration for 8-Pin MLF(R) Package 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. (c) 2006 Micrel, Incorporated. M9999-051006 hbwhelp@micrel.com or (408) 955-1690
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