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| 5V/3.3V TTL-to-DIFFERENTIAL PECL TRANSLATOR FEATURES s s s s s s s 3.3V and 5V power supply options 300ps typical propagation delay Low power Differential PECL output PNP TTL input for minimal loading Flow-through pinouts Available in 8-pin SOIC package ClockWorksTM SY10ELT20V SY100ELT20V DESCRIPTION The SY10/100ELT20V is a single TTL-to-differential PECL translators. Because PECL (Positive ECL) levels are used, either +5V or +3.3V and ground are required. The small outline 8-lead SOIC package and low skew single gate design make the ELT20V ideal for applications that require the translation of a clock or data signal where minimal space, low power, and low cost are critical. The ELT20V 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 NC 1 Q2 PECL TTL PIN NAMES Pin Function Differential PECL Output TTL Input +5V/+3.3V Supply Ground 8 VCC 7D 6 NC 5 GND Q D VCC GND Q3 NC 4 SOIC TOP VIEW Rev.: A Amendment: /0 1 Issue Date: December 1999 Micrel ClockWorksTM SY10ELT20V SY100ELT20V ABSOLUTE MAXIMUM RATINGS(1) Symbol VCC VI II IOUT Paramter Power Supply Voltage TTL Input Voltage TTL Input Current PECL Output Current -Continuous -Surge Storage Temperature Operating Temperature Value -0.5 to +7.0 -0.5 to VCC -30 to +5.0 50 100 -65 to +150 -40 to +85 C C Unit V V mA mA TRUTH TABLE D H L Open Q H L H Q L H L Tstore TA 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. DC ELECTRICAL CHARACTERISTICS VCC = +3.3V 10% or +5.0V 10% TA = -40C Symbol ICC Parameter Power Supply Current Min. -- Max. 20 TA = 0C Min. -- Max. 20 TA = +25C Min. -- Typ. -- Max. 20 TA = +85C Min. -- Max. 20 Unit mA Condition -- TTL DC ELECTRICAL CHARACTERISTICS VCC = +3.3V 10% or +5.0V 10% TA = -40C Symbol VIH VIL IIH IIL VIK Parameter Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current Input Clamp Voltage Min. 2.0 -- -- -- -- -- Max. -- 0.8 20 100 -0.2 -1.2 TA = 0C Min. 2.0 -- -- -- -- -- Max. -- 0.8 20 100 -0.2 -1.2 TA = +25C Min. 2.0 -- -- -- -- -- Typ. Max. -- 0.8 20 100 -0.2 -1.2 TA = +85C Min. 2.0 -- -- -- -- -- Max. -- 0.8 20 100 -0.2 -1.2 Unit V V A mA V Condition -- -- VIN = 2.7V VIN = VCC VIN = 0.5V IIN = -18mA PECL DC ELECTRICAL CHARACTERISTICS VCC = +3.3V 10% or +5.0V 10% TA = -40C Symbol VOH Parameter Output HIGH Voltage(1) 10ELT 3920 100ELT 3915 VOL Output LOW Voltage(1) 10ELT 3050 100ELT 3170 3350 3445 3050 3190 3370 3380 3050 3190 -- -- 3370 3380 3050 3190 3405 3380 4110 4120 3980 3975 4160 4120 4020 3975 -- -- 4190 4120 4090 3975 4280 4120 mV Min. Max. TA = 0C Min. Max. TA = +25C Min. Typ. Max. TA = +85C Min. Max. Unit mV Condition NOTES: 1. These values are for VCC = 5.0V. Level Specifications will vary 1:1 with VCC. 2 Micrel ClockWorksTM SY10ELT20V SY100ELT20V AC ELECTRICAL CHARACTERISTICS(1) VCC = +3.3V 10% or +5.0V 10% TA = -40C Symbol tPLH tPHL tskpp fMAX tr tf Parameter Propagation Delay(1) Part-to-Part Skew(2) Maximum Input Frequency Output Rise/Fall Time (20% to 80%) Min. 100 -- 350 200 Max. 600 500 -- 500 TA = 0C Min. 100 -- 350 200 Max. 600 500 -- 500 TA = +25C Min. 100 -- 350 200 Typ. -- -- -- -- Max. 600 500 -- 500 TA = +85C Min. 100 -- 350 200 Max. Unit 600 500 -- 500 ps ps MHz ps Condition 50 to VCC - 2.0V 50 to VCC - 2.0V 50 to VCC - 2.0V 50 to VCC - 2.0V NOTE: 1. Input Rise Time < 1.0ns. 2. Guaranteed by design. Not tested in production. PRODUCT ORDERING INFORMATION Ordering Code SY10ELT20VZC SY10ELT20VZCTR SY100ELT20VZC SY100ELT20VZCTR Package Type Z8-1 Z8-1 Z8-1 Z8-1 Operating Range Commercial Commercial Commercial Commercial 3 Micrel ClockWorksTM SY10ELT20V SY100ELT20V 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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