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| Micrel, Inc. 3.3V DUAL TTL-to-DIFFERENTIAL PECL TRANSLATOR Precision Edge(R) SY89222L Precision Edge(R) SY89222L FEATURES s s s s s s s 3.3V power supply 300ps typical propagation delay <100ps output-to-output skew Differential LVPECL outputs PNP TTL inputs for minimal loading Flow-through pinouts Available in ultra-small 8-pin MLFTM (2mm x 2mm) package Precision Edge(R) DESCRIPTION The SY89222L is a dual TTL-to-differential LVPECL translator with a +3.3V power supply. Because LVPECL (Positive ECL) levels are used, only +3.3V and ground are required. The SY89222L is functionally equivalent to the SY100ELT22L but in an ultra-small 8-lead MLFTM package that features a 70% smaller footprint. The low skew, dual gate design of the SY89222L makes it ideal for applications that require the translation of a clock and a data signal. FUNCTIONAL CROSS REFERENCE TABLE Micrel Part Number 2x2 MLFTM x SY89222L PECL 100K Functional Cross 8-SOIC SY100ELT22 Precision Edge is a registered trademark of Micrel, Inc. MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc. M9999-051805 hbwhelp@micrel.com or (408) 955-1690 Rev.: B Amendment: /0 1 Issue Date: May 2005 Micrel, Inc. Precision Edge(R) SY89222L PACKAGE/ORDERING INFORMATION Ordering Information(1) Q0 /Q0 Q1 /Q1 1 2 8 7 VCC D0 D1 GND Part Number SY89222LMITR(2) SY89222LMGTR(2) Package Type MLF-8 MLF-8 Operating Range Industrial Industrial Package Marking 222 222 with Pb-Free bar-line indicator Lead Finish Sn-Pb Pb-Free NiPdAu LVPECL 3 4 TTL 6 5 Ultra-Small Outline (2mm x 2mm) TOP VIEW 8-Pin MLFTM Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25C, DC electricals only. 2. Tape and Reel. PIN DESCRIPTION Pin Number 7, 6 1, 2, 3, 4 Pin Name D0, D1 Q0, /Q0, Q1, /Q1 VCC GND, Exposed Pad Type TTL Input 100k LVPECL Output Power Ground Pin Function Single-ended TTL inputs. If left open, defaults to HIGH. Differential LVPECL Outputs: See "Output Interface Applications" section for recommendations on terminations. Q defaults to HIGH (/Q defaults to LOW) when D input is left open. Positive Power Supply: Bypass with 0.1F//0.01F low ESR capacitors. GND and Exposed pad must be tied to ground plane. 8 5 M9999-051805 hbwhelp@micrel.com or (408) 955-1690 2 Micrel, Inc. Precision Edge(R) SY89222L Absolute Maximum Ratings(Note 1) Supply Voltage (VCC) .................................. -0.5V to +4.0V Input Voltage (VIN) ......................................... -0.5V to VCC LVPECL Output Current (IOUT) Continuous ............................................................. 50mA Surge .................................................................... 100mA Input Current Source or sink current on D0, D1 ......................... 50mA Lead Temperature (soldering, 10 sec.) ................... +220C Storage Temperature (TS) ....................... -65C to +150C Operating Ratings(Note 2) Supply Voltage (VCC) ...................................... 3.0V to 3.8V Ambient Temperature (TA) ......................... -40C to +85C Package Thermal Resistance, (Note 3) MLFTM (JA) Still-Air ................................................................. 93C/W 500lfpm ............................................................... 87C/W MLFTM (JB) Junction-to-Board ................................................ 56C/W DC ELECTRICAL CHARACTERISTICS Symbol ICC Parameter Power Supply Current Condition Max VCC, no load Min -- Typ -- Max 25 Units mA TTL DC ELECTRICAL CHARACTERISTICS(Note 4) VCC = +3.0V to +3.8V; TA = -40C to +85C, unless otherwise stated. Symbol VIH VIL IIH IIL VIK Parameter Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current Input Clamp Voltage VIN = 2.7V VIN = VCC VIN = 0.5V IIN = -18mA Condition Min 2.0 -- -- -- -- -- Typ -- -- -- -- -- -- Max -- 0.8 20 100 -0.2 -1.2 Units V V A A mA V PECL DC ELECTRICAL CHARACTERISTICS(Note 5) VCC = +3.0V to +3.8V and VEE = 0V; TA = -40C to +85C unless otherwise noted. Symbol VOH VOL Note 1. Parameter Output HIGH Voltage Output LOW Voltage Condition Note 1 Note 1 Min VCC-1.080 VCC-1.830 Typ -- -- Max VCC-0.880 VCC-1.620 Units V V 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 RATlNG conditions for extended periods may affect device reliability. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB. Parametric values specified at: 3 volt power supply range +3.0V to +3.8V. Output loaded with 50 to VCC-2V. Note 2. Note 3. Note 4. Note 5. M9999-051805 hbwhelp@micrel.com or (408) 955-1690 3 Micrel, Inc. Precision Edge(R) SY89222L AC ELECTRICAL CHARACTERISTICS (Note 6) VCC = +3.0V to +3.8V; TA = -40C to +85C, RL = 50 to VCC-2V, unless otherwise stated. Symbol tpd tr / tf tskew tskpp Tjitter Note 6. Note 7. Note 8. Parameter Propagation Delay Output Rise/Fall Time 20% to 80% Within-Device Skew Part-to-Part Skew Cycle-to-cycle Condition Min 100 200 Typ -- -- -- -- Max 600 500 100 500 1 Units ps ps ps ps psRMS Notes 6, 7 Note 6 Note 8 -- -- AC parameters are guaranteed by design and characterization. Same transition, common VCC levels. Cycle-to-cycle jitter definition: the variation in the period between adjacent cycles over a random sample of adjacent cycle pairs: Tjitter_CC = Tn - Tnt , where T is the time between the rising edges of the output cycle. LVPECL OUTPUT INTERFACE APPLICATIONS +3.3V +3.3V 130 ZO = 50 ZO = 50 VCC --2V 82 130 +3.3V +3.3V ZO = 50 ZO = 50 50 50 50 +3.3V 82 VCC --2V C (optional) 0.01F Figure 1a. Parallel Thevenin-Equivalent Termination Figure 1b. Three Resistor "Y Termination" +3.3V +3.3V +3.3V 130 130 ZO = 50 1k +3.3V VCC --2V 82 82 1.6k VCC --1.3V Figure 1c. Terminating Unused I/O M9999-051805 hbwhelp@micrel.com or (408) 955-1690 4 |
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