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CDC857-3 Datasheet 2.5-/3.3-v Phase-lock Loop Clock Drivers

Manufacturer: Texas Instruments

Overview: CDC857-2, CDC857-3 2.5-/3.3-V PHASE-LOCK LOOP CLOCK DRIVERS SCAS627A – SEPTEMBER 1999 – DECEMBER 1999 D Phase-Lock Loop Clock Distribution for Double Data Rate Synchronous DRAM DGG PACKAGE (TOP VIEW) Applications D Distributes One Differential Clock Input to Ten Differential Outputs D External Feedback Pins (FBIN, FBIN) Are Used to Synchronize the Outputs to the Clock Input D Operates at VCC = 2.5 V and AVCC = 3.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

VCC 11 VCC 12 CLK 13 38 VCC 37 G 36 FBIN The CDC857-2 and CDC857-3 are high-performance, low-skew, low-jitter, phase-lock loop (PLL) clock driver.

They use a PLL to precisely align, in both frequency and phase, the feedback (FBOUT) output to the clock (CLK) input signal.

The CDC857-3 operates at 3.3 V (PLL) and 2.5 V (output buffer).

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