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| 5V/3.3V TRIPLE ECL/LVECL-TOPECL/LVPECL TRANSLATOR SY100EL90V FEATURES s s s s s 3.3V and 5V power supply options 500ps propagation delay Fully differential design Supports both standard and low voltage operation Available in 20-pin SOIC package DESCRIPTION The SY100EL90V is a triple ECL/LVECL-to-PECL/ LVPECL translator. The device can translate over all combinations of supply voltages: -5V ECL to 5V PECL, -5V ECL to 3.3V LVPECL, -3.3V LVECL to 5V PECL or -3.3V LVECL to 3.3V LVPECL. A VBB output is provided for interfacing with single ended ECL signals at the input. If a single ended input is to be used, the VBB output should be connected to the D input. The active signal would then drive the D input. When used, the VBB output should be bypassed to via a 0.01F capacitor. The VBB output is designed to act as the switching reference for the EL90V under single ended input switching conditions. As a result this pin can only source/sink up to 0.5mA of current. To accomplish the level translation the EL90V requires three power rails. The VCC supply should be connected to the positive supply, and the VEE pin should be connected to the negative power supply. The GND pins as expected are connected to the system ground plane. Both VEE and VCC should be bypassed to ground via 0.01F capacitors. Under open input conditions, the D input will be biased at VCC/2 and the D input will be pulled to VEE. This condition will force the Q output to a LOW, ensuring stability. PIN CONFIGURATION/BLOCK DIAGRAM VCC 1 ECL 20 VCC 19 18 17 16 15 14 13 12 11 PECL D0 2 D0 3 VBB 4 ECL PECL Q0 Q0 GND Q1 Q1 GND Q2 Q2 VCC D1 5 D1 6 VBB 7 PIN NAMES Pin Dn Qn VBB Function ECL/LVECL Inputs PECL/LVPECL Outputs ECL/LVECL Reference Voltage Output PECL ECL D2 8 D2 9 VEE 10 SOIC TOP VIEW FUNCTION TABLE Function -5V ECL to 5V PECL -5V ECL to 3.3V LVPECL -3.3V LVECL to 5V PECL -3.3V LVECL to 3.3V LVPECL VCC 5V 3.3V 5V 3.3V GND 0V 0V 0V 0V VEE -5V -5V -3.3V -3.3V Rev.: F Amendment: /1 October, 1998 1 Isse Date: Micrel SY100EL90V ECL/LVECL INPUT DC ELECTRICAL CHARACTERISTICS ECL: VEE = -4.2V to -5.5V; LVECL: VEE = -3.0V to -3.8V TA = -40C Symbol VIH VIL IEE IIH IIL VBB VPP Parameter Input HIGH Voltage Input LOW Voltage Power Supply Current Input HIGH Current Input LOW Current Dn Dn Output Reference Minimum Peak-to-Peak Input Min. -1165 -1810 -- -- 0.5 -600 -1.38 150 Typ. -- -- -- -- -- -- -- -- Max. Min. TA = 0C Typ. -- -- -- -- -- -- -- -- Max. TA = +25C Min. Typ. -- -- -- -- -- -- -- -- Max. -880 -1165 -1475 -1810 8 150 -- -- -- -- 0.5 -600 TA = +85C Min. Typ. -- -- -- -- -- -- -- -- Max. -880 -1475 8 150 -- -- -1.26 -- Unit mV mV mA A A V mV -880 -1165 -1475 -1810 8 150 -- -- -- -- 0.5 -600 -880 -1165 -1475 -1810 8 150 -- -- -- -- 0.5 -600 -1.26 -1.38 -- 150 -1.26 -1.38 -- 150 -1.26 -1.38 -- 150 LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS VCC = +3.0V to +3.8V TA = -40C Symbol Parameter Output LOW Voltage(1) Power Supply Current Min. Typ. -- -- -- Max. Min. TA = 0C Typ. -- -- -- Max. Min. TA = +25C Typ. Max. TA = +85C Min. 2.275 1.490 -- Typ. -- -- -- Max. 2.420 1.680 26 Unit V V mA VOH VOL ICC Output HIGH Voltage(1) 2.215 1.470 -- 2.420 2.275 1.745 1.490 24 -- 2.420 2.275 2.350 2.420 1.680 1.490 1.600 1.680 24 -- 20 24 NOTE: 1. These levels are for VCC = 3.3V. Level specifications will vary 1:1 with VCC. PECL OUTPUT DC ELECTRICAL CHARACTERISTICS VCC = +4.2V to +5.5V TA = -40C Symbol Parameter Output LOW Voltage(1) Power Supply Current Min. Typ. -- -- -- Max. Min. TA = 0C Typ. -- -- -- Max. TA = +25C Min. Typ. Max. TA = +85C Min. 3.975 3.190 -- Typ. -- -- -- Max. 4.120 3.380 26 Unit V V mA VOH VOL ICC Output HIGH Voltage(1) 3.915 3.170 -- 4.120 3.975 3.445 3.190 24 -- 4.120 3.975 4.050 4.120 3.380 3.190 3.300 3.380 24 -- 20 24 NOTE: 1. These values are for VCC = 5V. Level specifications will vary 1:1 with VCC. 2 Micrel SY100EL90V AC ELECTRICAL CHARACTERISTICS ECL: VEE = -4.2V to -5.5V; LVECL: VEE = -3.0V to -3.8V; PECL: VCC = +4.2V to +5.5V; LVPECL: VCC = +3.0V to +3.8V TA = -40C Symbol tPLH tPHL tskew Parameter Propagation Delay D to Q Diff. S.E. Min. 390 340 -- -- -- 150 -- 230 Typ. -- -- 20 -- 25 -- -- -- Max. 590 640 100 200 -- -- -0.4 500 Min. 410 360 -- -- -- 150 -- 230 TA = 0C Typ. -- -- 20 -- 25 -- -- -- Max. 610 660 100 200 -- -- -0.4 500 TA = +25C Min. 420 370 -- -- -- 150 -- 230 Typ. -- -- 20 -- 25 -- -- -- Max. 620 670 100 200 -- -- -0.4 500 TA = +85C Min. 460 410 -- -- -- 150 -- 230 Typ. -- -- 20 -- 25 -- -- -- Max. Unit 660 710 100 200 -- -- -0.4 500 ps Within-Device Skew(1) Output-to-Output Part-to-Part (Diff.) Duty Cycle (Diff.) Minimum Input Swing(2) Common Mode Range(3) ps VPP VCMR tr tf mV V ps Output Rise/Fall Times Q (20% to 80%) NOTES: 1. Skew is measured between outputs under identical transitions. 2. Minimum input swing for which AC parameters are guaranteed. The device will function reliably with differential inputs down to 100mV. 3. The CMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the specified range and the peak-to-peak voltage lies between VPP min. and 1V. VCMR min. depends on VEE, VPP and temperature at VPP <500mV and -40C, VCMR is VEE+1.3V; and for 0-85C, VCMR is VEE+1.2V. At VPP 500mV and -40C, VCMR is VEE+1.5V; and for 0-85C, VCMR is VEE+1.4V. PRODUCT ORDERING CODE Ordering Code SY100EL90VZC SY100EL90VZCTR Package Type Z20-1 Z20-1 Operating Range Commercial Commercial 3 Micrel SY100EL90V 20 LEAD SOIC .300" WIDE (Z20-1) 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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