SY89321L

Micrel, Inc. 3.3V DIFFERENTIAL LVPECL/CML/LVDS-to-LVTTL TRANSLATOR Precision Edge® Precision ESdYg89e3®21L SY89321L FEATURES s 3.3V power supply s 1.9ns typical propagation delay s 275MHz fMAX s Differential LVPECL/CML/LVDS inputs s 24mA LVTTL outputs s Flow-through pinouts s Internal input resistors: pulldown on IN, pulldown and pullup on /IN s Q output will default LOW with inputs open s VBB output s Available in ultra-small 8-pin MLF® (2mm x 2mm) package BLOCK DIAGRAM LVPECL/ IN CML/LVDS /IN Q LVTTL Precision Edge® DESCRIPTION The SY89321L is a differential LVPECL/CML/LVDSto-LVTTL translator requiring only a single +3.3V power. The SY89321L is functionally equivalent to the SY100EPT21L, but in an ultra-small 8-pin MLF® package that features a 70% smaller footprint. This ultra-small package and low skew single gate design make the SY89321L ideal for applications that require the translation of a clock or data signal where minimal space, low power and low cost are critical. VBB allows a differential, single-ended, or AC-coupled interface to the device. If used, the VBB output should be bypassed to VCC with 0.01µF capacitor. Under open input conditions, the /IN will be biased at a VCC/2 voltage level and the IN input will be pulled to ground. This condition will force the Q output low to provide added stability. The SY89321L is compatible with positive ECL 100k logic levels. Precision Edge is a registered trademark of Micrel, Inc. MicroLeadFrame and MLF are registered ...