IDT5V928
INDUSTRIALTEMPERATURERANGE
8OUTPUTCLOCKGENERATOR
8 OUTPUT
IDT5V928
CLOCK GENERATOR
PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES OCTOBER 28, 2014
FEATURES:
DESCRIPTION:
• 3V to 3.6V operating voltage
The IDT5V928 is a low-cost, low skew, low jitter, and high-performance
clock synthesizer. It has been specially designed to interface with Gigabit
Ethernet(125MHz), FibreCHannel(106.25MHz), andOC-3(155.52MHz)
• 50MHz to 160MHz output frequency range
• Input from fundamental crystal oscillator or external source
• Internal PLL feedback (loading feedback output relative to applications. It can be programmed to provide output frequencies ranging
other outputs, adjusts propagation delay between REF inputs from 50MHz to 160MHz, with input frequencies ranging from 6.25MHz to
and outputs)
80MHz.
TheIDT5V928includesaninternalRCfilterthatprovidesexcellentjitter
• Select inputs (S[1:0]) for FB divide selection (multiply ratio of 2,
3, 4, 4.25, 5, 6, 6.25, and 8)
• Low jitter
characteristics and eliminates the need for external components. When
usingtheoptionalcrystalinput, thechipacceptsa10-40MHzfundamental
• PLL bypass for testing and power-down control (S1 = H, S0 = H, mode crystal with a maximum equivalent series resistance of 50Ω.
powers part down <500μA)
• Available in TSSOP package
• Not Recommended for New Design
• Use replacement part 8T49N008A-dddNLGI
APPLICATIONS:
• Gigabit ethernet
• Router
• Network switches
• SAN
• Instrumentation
• Fibre channel
FUNCTIONALBLOCKDIAGRAM
OE
VCO DIVIDE
1/N
Q0
PHASE
DETECTOR
CHARGE
PUMP
LOOP
FILTER
VCO
REF
Q1
Q2
Q3
Q4
Q5
0
1
X2
X1
CRYSTAL
OSCILLATOR
Q6
Q7
SELECT MODE
S1 S0
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
JULY 2006
1
c
2007 Integrated Device Technology, Inc.
DSC 5854/8
