CDCUA877 Phase-Lock Loop Clock Driver
Texas Instruments CDCUA877 Phase-Lock Loop Clock Driver is a high-performance, low-jitter, low-skew, zero-delay buffer. It distributes a differential clock input pair (CK, /CK) to 10 differential pairs of clock outputs (Yn, /Yn) and one differential pair of feedback clock outputs (FBOUT, /FBOUT). The clock outputs are controlled by the input clocks (CK, /CK), the feedback clocks (FBIN, /FBIN), the LVCMOS control pins (OE, OS), and the analog power input (AVDD). When OE is low, the clock outputs, except FBOUT, /FBOUT, are disabled while the internal PLL maintains its locked-in frequency. OS (output select) is a program pin that must be tied to GND or VDD. When OS is high, OE functions as previously described. When OS and OE are both low, OE does not affect Y7, /Y7, as these are free-running. When AVDD is grounded, the PLL is turned off and bypassed for test purposes.
