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HD74CDCV857A
2.5-V Phase-lock Loop Clock Driver
REJ03D0136–0300Z (Previous ADE-205-693B (Z))
Rev.3.00 Oct.09.2003
Description
The HD74CDCV857A is a high-performance, low-skew, low-jitter, phase locked loop clock driver. It is specifically designed for use with DDR (Double Data Rate) synchronous DRAMs.
Features
• DDR333 / PC2700-Compliant, also meets DDR266 / PC2100 requirement. • Supports 60 MHz to 170 MHz operation range • Distributes one differential clock input pair to ten differential clock outputs pairs • Supports spread spectrum clock requirements meeting the PC100 SDRAM registered DIMM
specification • External feedback pins (FBIN, FBIN) are used to synchronize the outputs to the clock input • Supports 2.5V analog supply voltage (AVCC), and 2.