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SY89250VMI Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SY89250VMI Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 6 page 1 Precision Edge® SY89250V Micrel, Inc. M9999-052505 hbwhelp@micrel.com or (408) 955-1690 The SY89250V is a differential PECL/ECL receiver/buffer in a space saving (2mm × 2mm) MLF™ package. The device is functionally equivalent to the SY100EL16VC, but features a 70% smaller footprint. It provides a V BB output for either single-ended application or as a DC bias for AC-coupling to the device. The SY89250V provides an /EN input which is synchro- nized with the data input (D) signal in a way that provides glitchless gating of the QHG and /QHG outputs. When the /EN signal is LOW, the input is passed to the outputs and the data output equals the data input. When the data input is HIGH and the /EN goes HIGH, it will force the QHG LOW and the /QHG HIGH on the next negative transition of the data input. If the data input is LOW when the /EN goes HIGH, the next data transition to a HIGH is ignored and QHG remains LOW and /QHG remains HIGH. The next positive transition of the data input is not passed on to the data outputs under these conditions. The QHG and /QHG outputs remain in their dis- abled state as long as the /EN input is held HIGH. The /EN input has no influence on the /Q output and the data input is passed on (inverted) to this output whether /EN is HIGH or LOW. This configuration is ideal for crystal oscillator applica- tions, where the oscillator can be free running and gated on and off synchronously without adding extra counts to the output. All support documentation can be found on Micrel’s web site at www.micrel.com. DESCRIPTION s 3.3V and 5V power supply options s 250ps propagation delay s Very high voltage gain s Ideal for Pulse Amplifier and Limiting Amplifier applications s Data synchronous Enable/Disable (/EN) on Q HG and /Q HG provides for complete glitchless gating of the outputs s Ideal for gating timing signals s Complete solution for high quality, high frequency crystal oscillator applications s Available in an ultra-small 8-pin (2mm ××××× 2mm) MLF™ package FEATURES Precision Edge® SY89250V ENHANCED DIFFERENTIAL RECEIVER Rev.: B Amendment: /0 Issue Date: May 2005 Precision Edge® Precision Edge is a registered trademark of Micrel, Inc. MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc. Micrel Part Number PECL/ECL Functional Cross SY89250V 100k SY100EL16VC FUNCTIONAL CROSS REFERENCE APPLICATIONS s Oscillator modules BLOCK DIAGRAM 1 2 3 45 6 8 LEN Q D VBB LATCH OE 7 VCC QHG /QHG VEE /Q D VBB /EN |
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