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| 3.3V DUAL DIFFERENTIAL LVPECL-to-LVTTL TRANSLATOR FEATURES s s s s s s s 3.3V power supply 2.0ns typical propagation delay <500ps typical output-to-output skew Differential LVPECL inputs 24mA LVTTL outputs Flow-through pinouts Available in 8-pin SOIC package ClockWorksTM SY10ELT23L SY100ELT23L DESCRIPTION The SY10/100ELT23L are dual differential LVPECLto-LVTTL translators with +3.3V power supply. Because LVPECL (Low Voltage Positive ECL) levels are used, only +3.3V and ground are required. The small outline 8lead SOIC package and the low skew, dual gate design of the ELT23L makes it ideal for applications which require the translation of a clock and a data signal. The ELT23L is available in both ECL standards: the 10ELT is compatible with positive ECL 10H logic levels, while the 100ELT is compatible with positive ECL 100K logic levels. PIN CONFIGURATION/BLOCK DIAGRAM PIN NAMES Pin Function LVTTL Outputs Differential LVPECL Inputs +3.3V Supply Ground D0 /D0 /D1 D1 1 2 LVPECL 3 4 LVTTL 8 7 6 5 VCC Q0 Q1 GND Qn Dn VCC GND Rev.: G Amendment: 0 1 Issue Date: July 2000 Micrel ClockWorksTM SY10ELT23L SY100ELT23L ABSOLUTE MAXIMUM RATINGS(1) Symbol VCC VI VO IO Tstore Tamb Paramter Power Supply Voltage PECL Input Voltage Voltage Applied to Output at HIGH State Current Applied to Output at LOW State Storage Temperature Operating Temperature Value -0.5 to +3.8 0V to VCC+0.5 -0.5 to VCC Twice the Rated IOL -65 to +150 -40 to +85 Unit V V V mA C C TRUTH TABLE D L H Open D H L Open Q L H L NOTE: 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 RATlNG conditions for extended periods may affect device reliability. LVTTL DC ELECTRICAL CHARACTERISTICS VCC = +3.3V 5% TA = -40C Symbol VOH VOL ICC IOS Parameter Output HIGH Voltage Output LOW Voltage Power Supply Current Output Short Circuit Current Min. 2.0 -- -- -80 Max. -- 0.5 30 -240 TA = 0C Min. 2.0 -- -- -80 Max. -- 0.5 30 -240 TA = +25C Min. 2.0 -- -- -80 Max. -- 0.5 30 -240 TA = +85C Min. 2.0 -- -- -80 Max. -- 0.5 30 -240 Unit V V mA mA VOUT = 0V Condition IOH = -3.0mA IOL = 24mA LVPECL DC ELECTRICAL CHARACTERISTICS VCC = +3.3V 5% TA = -40C Symbol IIH IIL VCMR VPP VIH Parameter Input HIGH Current Input LOW Current Common Mode Range Minimum Peak-to-Peak Input(1) Min. -- 0.5 1.5 200 Typ. -- -- -- -- -- -- -- -- Max. 150 -- VCC -- 2410 2420 1800 1825 Min. -- 0.5 1.5 200 2130 2135 1350 1490 TA = 0C Typ. -- -- -- -- -- -- -- -- Max. 150 -- VCC -- 2460 2420 1820 1825 -- 0.5 1.5 200 2170 2135 1350 1490 TA = +25C Min. Typ. -- -- -- -- -- -- -- -- Max. 150 -- VCC -- 2490 2420 1820 1825 -- 0.5 1.5 200 2130 2135 1350 1490 TA = +85C Min. Typ. -- -- -- -- -- -- -- -- Max. 150 -- VCC -- 2565 2420 mV 1820 1825 Unit A A V mV mV Input HIGH Voltage(2) 10ELT 2070 100ELT 2135 Input LOW Voltage(2) 10ELT 1350 100ELT 1490 VIL NOTES: 1. 200mV input guarantees full logic at output. 2. These values are for VCC = 3.3V. Level Specifications will vary 1:1 with VCC. 2 Micrel ClockWorksTM SY10ELT23L SY100ELT23L AC ELECTRICAL CHARACTERISTICS VCC = +3.3V 5% TA = -40C Symbol tPLH tPHL tskpp tskew++ tskew- - tr tf fMAX Parameter Propagation Delay Part-to-Part Skew(1,4) Within-Device Within-Device Skew(2,4) Skew(3,4) Min. 1.5 -- -- -- 0.5 160 Max. 2.5 0.5 0.3 0.3 1.0 -- TA = 0C Min. 1.5 -- -- -- 0.5 160 Max. 2.5 0.5 0.3 0.3 1.0 -- TA = +25C Min. 1.5 -- -- -- 0.5 160 Max. 2.5 0.5 0.3 0.3 1.0 -- TA = +85C Min. 1.5 -- -- -- 0.5 160 Max. 2.5 0.5 0.3 0.3 1.0 -- Unit ns ns ns ns ns MHz Condition CL = 20pF CL = 20pF CL = 20pF CL = 20pF CL = 20pF CL = 20pF Output Rise/Fall Time 1.0V to 2.0V Maximum Input Frequency(5,6) NOTES: 1. Device-to-Device Skew considering HIGH-to-HIGH transitions at common VCC level. 2. Within-Device Skew considering HIGH-to-HIGH transitions at common VCC level. 3. Within-Device Skew considering LOW-to-LOW transitions at common VCC level. 4. All skew parameters are guaranteed but not tested. 5. Frequency at which output levels will meet a 0.8V to 2.0V minimum swing. 6. The fMAX value is specified as the minimum guaranteed maximum frequency. Actual operational maximum frequency may be greater. PRODUCT ORDERING CODE Ordering Code SY10ELT23LZC SY10ELT23LZCTR SY100ELT23LZC SY100ELT23LZCTR Package Type Z8-1 Z8-1 Z8-1 Z8-1 Operating Range Commercial Commercial Commercial Commercial VCC Range (V) +3.3 5% +3.3 5% +3.3 5% +3.3 5% 3 Micrel ClockWorksTM SY10ELT23L SY100ELT23L 8 LEAD SOIC .150" WIDE (Z8-1) Rev. 03 MICREL-SYNERGY TEL 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA FAX + 1 (408) 980-9191 + 1 (408) 914-7878 WEB http://www.micrel.com This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. (c) 2000 Micrel Incorporated 4 |
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