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Integrated Circuit Systems - 1-TO-18 LVCMOS FANOUT BUFFER

Numéro de référence ICS83940
Description 1-TO-18 LVCMOS FANOUT BUFFER
Fabricant Integrated Circuit Systems 
Logo Integrated Circuit Systems 





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ICS83940 fiche technique
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS83940
LOW SKEW, 1-TO-18
LVCMOS FANOUT BUFFER
GENERAL DESCRIPTION
The ICS83940 is a low skew, 1-to-18 Fanout
,&6 Buffer and a member of the HiPerClockS™
HiPerClockS™ family of High Performance Clock Solutions from
ICS. The low impedance LVCMOS out-
puts are designed to drive 50series or parallel
terminated transmission lines. The effective fanout can be in-
creased from 18 to 36 by utilizing the ability of the outputs to
drive two series terminated lines. The differential clock
www.DataSheeitn4pUu.ctomis designed to accept any differential input levels
including LVPECL.
The ICS83940 is characterized at full 3.3V, full 2.5V and mixed
3.3V input and 2.5V output operating supply modes. Guaran-
teed output and part-to-part skew characteristics make the
ICS83940 ideal for those clock distribution applications de-
manding well defined performance and repeatability.
FEATURES
18 LVCMOS outputs, 23typical output impedance
Output frequency up to 200MHz
150ps output skew
Part to part skew: 850ps
Selectable LVCMOS or differential clock input
LVTTL / LVCMOS clock select input
Full 3.3V, 2.5V or mixed 3.3V, 2.5V supply modes
0°C to 70°C ambient operating temperature
Industrial temperature information available upon request
BLOCK DIAGRAM
CLK_SEL
CLK0
nCLK0
LVCMOS_CLK
0
1
PIN ASSIGNMENT
Q0
Q1 - Q16
Q17
GND
GND
LVCMOS_CLK
CLK_SEL
CLK
nCLK
VDDI
VDDO
32 31 30 29 28 27 26 25
1 24
2 23
3 22
4 ICS83940 21
5 20
6 19
7 18
8 17
9 10 11 12 13 14 15 16
Q6
Q7
Q8
VDDI
Q9
Q10
Q11
GND
32-Lead LQFP
Y Pacakge
7mm x 7mm x 1.4mm package body
Top View
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial
product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.
83940AY
www.icst.com/products/hiperclocks.html
REV. B JULY 31, 2001
1

PagesPages 11
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