|
87974I Datasheet, PDF (1/16 Pages) Integrated Device Technology – Low Skew, 1-to-15, LVCMOS/LVTTL Clock Generator | |||
|
Low Skew, 1-to-15,
LVCMOS/LVTTL Clock Generator
87974I
Data Sheet
GENERAL DESCRIPTION
The 87974I is a low skew, low jitter 1-to-15 LVCMOS/
LVTTL Clock Generator/Zero Delay Buffer. The device
has a fully integrated PLL and three banks whose divider
ratios can be independently controlled, providing output
frequency relationships of 1:1, 2:1, 3:1, 3:2, 3:2:1. In
addition, the external feedback connection provides for a wide
selection of output-to-input frequency ratios. The CLK0 and
CLK1 pins allow for redundant clocking on the input and dynam-
ically switching the PLL between two clock sources.
Guaranteed low jitter and output skew characteristics make
the 87974I ideal for those applications demanding well deï¬ned
performance and repeatability.
FEATURES
⢠Fully integrated PLL
⢠Fifteen single ended 3.3V LVCMOS/LVTTL outputs
⢠Two LVCMOS/LVTTL clock inputs for redundant clock applica-
tions
⢠CLK0 and CLK1 accepts the following input levels:
LVCMOS/LVTTL
⢠Output frequency range: 8.33MHz to 125MHz
⢠VCO range: 200MHz to 500MHz
⢠External feedback for âzero delayâ clock regeneration
⢠Cycle-to-cycle jitter: ±100ps (typical)
⢠Output skew: 350ps (maximum)
⢠3.3V operating supply
⢠-40°C to 85°C ambient operating temperature
⢠Available in lead-free RoHS-compliant package
PIN ASSIGNMENT
52-Lead LQFP
10mm x 10mm x 1.4mm package body
Y package
Top View
©2016 Integrated Device Technology, Inc
1
Revision E January 26, 2016
|
▷ |