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CDC2586PAH Datasheet(PDF) 1 Page - Texas Instruments |
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CDC2586PAH Datasheet(HTML) 1 Page - Texas Instruments |
1 / 12 page CDC2586 3.3-V PHASE-LOCK LOOP CLOCK DRIVER WITH 3-STATE OUTPUTS SCAS337C – FEBRUARY 1993 – REVISED OCTOBER 1998 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Low Output Skew for Clock-Distribution and Clock-Generation Applications D Operates at 3.3-V VCC D Distributes One Clock Input to Twelve Outputs D Two Select Inputs Configure Up to Nine Outputs to Operate at One-Half or Double the Input Frequency D No External RC Network Required D External Feedback (FBIN) Synchronizes the Outputs to the Clock Input D Application for Synchronous DRAM, High-Speed Microprocessor D TTL-Compatible Inputs and Outputs D Outputs Have Internal 26-Ω Series Resistors to Dampen Transmission-Line Effects D State-of-the-Art EPIC-ΙΙB™ BiCMOS Design Significantly Reduces Power Dissipation D Distributed VCC and Ground Pins Reduce Switching Noise D Packaged in 52-Pin Thin Quad Flat Package PAH PACKAGE (TOP VIEW) 15 16 VCC 4Y3 GND VCC 4Y2 GND VCC 4Y1 GND GND VCC 3Y3 GND 39 38 37 36 35 34 33 32 31 30 29 28 27 17 1 2 3 4 5 6 7 8 9 10 11 12 13 GND 1Y1 VCC GND 1Y2 VCC GND 1Y3 VCC GND GND 2Y1 VCC 18 19 20 21 51 50 49 48 47 52 46 44 43 42 45 22 23 24 25 26 41 40 14 NC – No internal connection description The CDC2586 is a high-performance, low-skew, low-jitter clock driver. It uses a phase-lock loop (PLL) to precisely align, in both frequency and phase, the clock output signals to the clock input (CLKIN) signal. It is specifically designed for use with popular microprocessors operating at speeds from 50 MHz to 100 MHz or down to 25 MHz on outputs configured for half-frequency operation. Each output has an internal 26- Ω series resistor that improves the signal integrity at the load. The CDC2586 operates at nominal 3.3-V VCC. The feedback input (FBIN) synchronizes the output clocks in frequency and phase to CLKIN. One of the twelve output clocks must be fed back to FBIN for the PLL to maintain synchronization between CLKIN and the outputs. The output used as feedback is synchronized to the same frequency as CLKIN. Copyright © 1998, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. EPIC- ΙΙΒ is a trademark of Texas Instruments Incorporated. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. |
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