Precision Edge SY10ELT21L 3.3V DIFFERENTIAL Precision Edge Micrel, Inc. SY100ELT21L SY10ELT21L LVPECL-to-LVTTL SY100ELT21L TRANSLATOR FEATURES 3.3V power supply Precision Edge 2.0ns typical propagation delay Low power DESCRIPTION Differential LVPECL inputs 24mA TTL outputs The SY10/100ELT21L are single differential LVPECL- Flow-through pinouts to-LVTTL translators using a single +3.3V power supply. Available in 8-pin SOIC package Because LVPECL (Low Voltage Positive ECL) levels are used, only +3.3V and ground are required. The small outline 8-lead SOIC package and low skew single gate design make the ELT21L ideal for applications that require the translation of a clock or data signal where minimal space, low power, and low cost are critical. V allows a differential, single-ended, or AC-coupled BB interface to the device. If used, the V output should be BB bypassed to V with 0.01 F capacitor. CC Under open input conditions, the /D will be biased at a V /2 voltage level and the D input will be pulled to CC ground. This condition will force the Q output low to provide added stability. The ELT21L 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 NAMES Pin Function Q TTL Output D, /D Differential LVPECL Inputs V +3.3V Supply CC V Reference Output BB GND Ground Precision Edge is a registered trademark of Micrel, Inc. Rev.: D Amendment: /0 M9999-031506 1 Issue Date: March 2006 hbwhelp micrel.com or (408) 955-1690 Precision Edge SY10ELT21L Micrel, Inc. SY100ELT21L PACKAGE/ORDERING INFORMATION (1) Ordering Information Package Operating Package Lead NC 1 8V CC Part Number Type Range Marking Finish TTL D 2 7 Q SY10ELT21LZC Z8-1 Commercial HEL21L Sn-Pb PECL (2) D 3 6 NC SY10ELT21LZCTR Z8-1 Commercial HEL21L Sn-Pb SY100ELT21LZC Z8-1 Commercial XEL21L Sn-Pb V 4 5 GND BB (2) SY100ELT21LZCTR Z8-1 Commercial XEL21L Sn-Pb SY10ELT21LZI Z8-1 Industrial HEL21L Sn-Pb 8-Pin SOIC (Z8-1) (2) SY10ELT21LZITR Z8-1 Industrial HEL21L Sn-Pb SY100ELT21LZI Z8-1 Industrial XEL21L Sn-Pb (2) SY100ELT21LZITR Z8-1 Industrial XEL21L Sn-Pb (3) SY10ELT21LZG Z8-1 Industrial HEL21L with Pb-Free Pb-Free bar-line indicator NiPdAu (2, 3) SY10ELT21LZGTR Z8-1 Industrial HEL21L with Pb-Free Pb-Free bar-line indicator NiPdAu (3) SY100ELT21LZG Z8-1 Industrial XEL21L with Pb-Free Pb-Free bar-line indicator NiPdAu ( (2, 3) SY100ELT21LZG TR Z8-1 Industrial XEL21L with Pb-Free Pb-Free bar-line indicator NiPdAu Notes: 1. Contact factory for die availability. Dice are guaranteed at T = 25C, DC Electricals only. A 2. Tape and Reel. 3. Pb-Free package is recommended for new designs. M9999-031506 2 hbwhelp micrel.com or (408) 955-1690