ICS85408I Datasheet, PDF (1/16 Pages) Integrated Device Technology – Low Skew, 1-to-8, Differential-to-LVDS Clock

Low Skew, 1-to-8,
Differential-to-LVDS Clock
ICS85408I
DATASHEET
General Description
The ICS85408I is a low skew, high performance 1-to-8
ICS
Differential-to-LVDS Clock Distribution Chip and a
HiPerClockS™ _{member of the HiPerClockS™ family of High}
Performance Clock Solutions from IDT. The ICS85408I
CLK, nCLK pair can accept most differential input
levels and translates them to 3.3V LVDS output levels. Utilizing Low
Voltage Differential Signaling (LVDS), the ICS85408I provides a low
power, low noise, low skew, point-to-point solution for distributing
LVDS clock signals.
Guaranteed output and part-to-part skew specifications make the
ICS85408I ideal for those applications demanding well defined
performance and repeatability.
Features
• Eight differential LVDS output pairs
• One differential clock input pair
• CLK/nCLK can accept the following differential input levels:
LVPECL, LVDS, LVHSTL, HCSL, SSTL
• Maximum output frequency: 700MHz
• Translates any differential input signal (LVPECL, LVHSTL, SSTL,
HCSL) to LVDS levels without external bias networks
• Translates any single-ended input signal to LVDS with resistor
bias on nCLK input
• Multiple output enable inputs for disabling unused outputs
in reduced fanout applications
• Additive phase jitter, RMS: 167fs (typical)
• Output skew: 50ps (maximum)
• Part-to-part skew: 550ps (maximum)
• Propagation delay: 2.4ns (maximum)
• 3.3V operating supply
• -40°C to 85°C ambient operating temperature
• Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
Block Diagram
OE
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
CLK
nQ3
nCLK
Q4
nQ4
Q5
nQ5
Q6
nQ6
Q7
nQ7
ICS85408BGI REVISION B JULY 2, 2009
Pin Assignment
nQ6 1
Q6 2
nQ5 3
Q5 4
nQ4 5
Q4 6
nQ3 7
Q3 8
nQ2 9
Q2 10
nQ1 11
Q1 12
24 Q7
23 nQ7
22 OE
21 GND
20 VDD
19 VDD
18 GND
17 VDD
16 CLK
15 nCLK
14 Q0
13 nQ0
ICS85408I
24-Lead TSSOP
4.4mm x 7.8mm x 0.925mm package body
G Package
Top View
1
©2009 Integrated Device Technology, Inc.