Micrel, Inc. SY100EL92 TRIPLE LVPECL-TO-PECL SY100EL92 OR PECL-TO-LVPECL TRANSLATOR DESCRIPTION FEATURES 5V and 3.3V power supplies required The SY100EL92 is a triple LVPECL-to-PECL or PECL- to-LVPECL translator. The device receives standard PECL Also, supports LVPECL-to-PECL translation signals and translates them to differential LVPECL output 500ps propagation delays signals (or vice versa). SY100EL92 can also be used as a Fully differential design differential line receiver for PECL-to-PECL or LVPECL-to- Differential line receiver capability LVPECL signals. However, please note that for the latter we will need two different power supplies. Please refer to Application note Function Table for more details. Available in 20-pin SOIC package VBB outputs are provided for interfacing single ended input signals. If a single ended input is to be used, the VBB output should be connected to the D input and the active signal will drive the D input. When used, the VBB should be bypassed to VCC via a 0.01 F capacitor. The VBB is designed to act as a switching reference for the SY100EL92 under single ended input conditions. As a result, the pin can only source/sink 0.5mA of current. To accomplish the PECL-to-LVPECL level translation, the SY100EL92 requires three power rails. The VCC and VCC VBB supply is to be connected to the standard PECL supply, the 3.3V supply is to be connected to the VCCO supply, and GND is connected to the system ground plane. Both the VCC and VCCO should be bypassed to ground with a 0.01F capacitor. To accomplish the LVPECL-to-PECL level translation, the SY100EL92 requires three power rails as well. The 5.0V supply is connected to the VCC and VCCO pins, 3.3V supply is connected to the VCC VBB pin and GND is connected to the system ground plane. VCC VBB is used to provide a proper VBB output level if a single ended input is used. For differential LVPECL input VCC VBB can be either 3.3V or 5V. Under open input conditions, the D input will be biased at a VCC/2 voltage level and the D input will be pulled to GND. This condition will force the output low, ensuring stability. FUNCTION TABLE PIN NAMES Function Vcc Vcco Vcc VBB Pin Function PECL-to-LVPECL 5.0V 3.3V 5.0V Dn PECL / LVPECL Inputs LVPECL-to-PECL 5.0V 5.0V 3.3V Qn PECL / LVPECL Outputs PECL-to-PECL 5.0V 5.0V 5.0V VBB PECL / LVPECL Reference Voltage Output LVPECL-to-LVPECL 5.0V 3.3V 3.3V VCCO VCC for Output VCC VBB VCC for VBB Output GND Common Ground Rail VCC VCC for Internal Circuitry Rev.: G Amendment: /0 M9999-031306 1 Issue Date: March 2006 1 hbwhelp micrel.com or (408) 955-1690Micrel, Inc. SY100EL92 PACKAGE/ORDERING INFORMATION (1) Ordering Information Package Operating Package Lead 20 VCC VBB 1 VCC Part Number Type Range Marking Finish 2 19 D0 Q0 SY100EL92ZC Z20-1 Commercial SY100EL92ZC Sn-Pb (2) 3 18 Q0 SY100EL92ZCTR Z20-1 Commercial SY100EL92ZC Sn-Pb D0 SY100EL92ZI Z20-1 Industrial SY100EL92ZI Sn-Pb 4 17 VBB VCCO (2) SY100EL92ZITR Z20-1 Industrial SY100EL92ZI Sn-Pb 5 16 Q1 D1 (3) SY100EL92ZG Z20-1 Industiral SY100EL92ZG with NiPdAu D1 6 15 Q1 Pb-Free bar-line indicator Pb-Free (2, 3) SY100EL92ZGTR Z20-1 Industrial SY100EL92ZG with NiPdAu 7 VBB 14 VCCO Pb-Free bar-line indicator Pb-Free 8 13 Q2 D2 Notes: D2 9 12 Q2 1. Contact factory for die availability. Dice are guaranteed at T = 25C, DC Electricals only. A 2. Tape and Reel. GND 10 11 VCC 3. Pb-Free package is recommended for new designs. 20-Pin Wide SOIC (Z20-1) M9999-031306 2 hbwhelp micrel.com or (408) 955-1690