SY100EL90V Micrel, Inc. 5V/3.3V TRIPLE ECL/LVECL-TO- SY100EL90V PECL/LVPECL TRANSLATOR FEATURES DESCRIPTION 3.3V and 5V power supply options The SY100EL90V is a triple ECL/LVECL-to-PECL/ LVPECL translator. The device can translate over all 500ps propagation delay combinations of supply voltages: -5V ECL to 5V PECL, Fully differential design -5V ECL to 3.3V LVPECL, -3.3V LVECL to 5V PECL or Supports both standard and low voltage operation -3.3V LVECL to 3.3V LVPECL. Available in 20-pin SOIC package 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 0.01 F 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 0.01 F 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. FUNCTION TABLE PIN NAMES Function VCC GND VEE Pin Function Dn ECL/LVECL Inputs 5V ECL to 5V PECL 5V 0V 5V 5V ECL to 3.3V LVPECL 3.3V 0V 5V Qn PECL/LVPECL Outputs 3.3V LVECL to 5V PECL 5V 0V 3.3V VBB ECL/LVECL Reference Voltage Output 3.3V LVECL to 3.3V LVPECL 3.3V 0V 3.3V Rev.: I Amendment: /0 M9999-031306 1 Isse Date: March 2006 1 hbwhelp micrel.com or (408) 955-1690PECL PECL PECL ECL ECL ECL SY100EL90V Micrel, Inc. PACKAGE/ORDERING INFORMATION (1) Ordering Information Package Operating Package Lead 20 VCC 1 VCC Part Number Type Range Marking Finish 2 19 D0 Q0 SY100EL90VZC Z20-1 Commercial SY100EL90VZC Sn-Pb (2) SY100EL90VZCTR Z20-1 Commercial SY100EL90VZC Sn-Pb 3 18 Q0 D0 SY100EL90VZI Z20-1 Industrial SY100EL90VZI Sn-Pb VBB 4 17 GND (2) SY100EL90VZITR Z20-1 Industrial SY100EL90VZI Sn-Pb 5 16 Q1 (3) D1 SY100EL90VZG Z20-1 Industiral SY100EL90VZG with NiPdAu Pb-Free bar-line indicator Pb-Free D1 6 15 Q1 (2, 3) SY100EL90VZGTR Z20-1 Industrial SY100EL90VZG with NiPdAu 7 VBB 14 GND Pb-Free bar-line indicator Pb-Free Notes: 8 13 Q2 D2 1. Contact factory for die availability. Dice are guaranteed at T = 25C, DC Electricals only. A D2 9 12 Q2 2. Tape and Reel. 3. Pb-Free package is recommended for new designs. VEE 10 11 VCC 20-Pin Wide SOIC (Z20-1) M9999-031306 2 hbwhelp micrel.com or (408) 955-1690