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HD74CDC2509B - 3.3-V Phase-lock Loop Clock Driver

General Description

The HD74CDC2509B is a high-performance, low-skew, low-jitter, phase-lock loop clock driver.

It uses a phase-lock loop (PLL) to precisely align, in both frequency and phase, the feedback (FBOUT) output to the clock (CLK) input signal.

It is specifically designed for use with synchronous DRAMs.

Key Features

  • Meets “PC SDRAM registered DIMM design support document, Rev. 1.2” Phase-lock loop clock distribution for synchronous DRAM.

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📁 Similar Datasheet

Part Number Description Manufacturer
HD74CDC2509B 3.3-V Phase-lock Loop Clock Driver Renesas
HD74CDC2510B 3.3-V Phase-lock Loop Clock Driver Renesas
HD74CDCF2509B 3.3-V Phase-lock Loop Clock Driver Renesas
HD74CDCF2510B 3.3-V Phase-lock Loop Clock Driver Renesas
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Other Datasheets by Hitachi Semiconductor (now Renesas)

Part Number Description
HD74CDC2510B 3.3-V Phase-lock Loop Clock Driver
HD74CDC857 3.3/2.5-V Phase-lock Loop Clock Driver
HD74CDCF2509B 140 MHz/ 0 to 85C Operation 3.3-V Phase-lock Loop Clock Driver
HD74CDCF2510B 140 MHz/ 0 to 85C Operation 3.3-V Phase-lock Loop Clock Driver
HD74CDCV857 2.5-V Phase-lock Loop Clock Driver

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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HD74CDC2509B 3.3-V Phase-lock Loop Clock Driver ADE-205-218F (Z) 7th. Edition October 1999 Description The HD74CDC2509B is a high-performance, low-skew, low-jitter, phase-lock loop clock driver. It uses a phase-lock loop (PLL) to precisely align, in both frequency and phase, the feedback (FBOUT) output to the clock (CLK) input signal. It is specifically designed for use with synchronous DRAMs. The HD74CDC2509B operates at 3.3 V V CC and is designed to drive up to five clock loads per output. One bank of five outputs and one bank of four outputs provide nine low-skew, low-jitter copies of the input clock. Output signal duty cycles are adjusted to 50 percent independent of the duty cycle at the input clock.