ICS83947I Datasheet, PDF (1/9 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-9 LVCMOS FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
ICS83947I
LOW SKEW, 1-TO-9
LVCMOS FANOUT BUFFER
GENERAL DESCRIPTION
FEATURES
ICS
The ICS83947I is a low skew, 1-to-9 LVCMOS
Fanout Buffer and a member of the HiPerClockS™
HiPerClockS™ _{family of High Performance Clock Solutions from}
ICS. The low impedance LVCMOS/LVTTL out-
puts are designed to drive 50Ω series or parallel
terminated transmission lines. The effective fanout can be in-
creased from 9 to 18 by utilizing the ability of the outputs to
drive two series terminated lines.
• 9 LVCMOS/LVTTL outputs
• Selectable CLK0 and CLK1 can accept the following
input levels: LVCMOS and LVTTL
• Maximum output frequency: 110MHz
• Output skew: 500ps (maximum)
• Part-to-part skew: 2ns (maximum)
Guaranteed output and part-to-part skew characteristics
make the ICS83947I ideal for high performance, single ended
applications that also require a limited output voltage.
• 3.3V operating supply
• -40°C to 85°C ambient operating temperature
• Lead-Free package available
• Pin compatible with the MPC947
BLOCK DIAGRAM
CLK_EN
CLK0
0
CLK1
1
D
Q
LE
CLK_SEL
OE
PIN ASSIGNMENT
32 31 30 29 28 27 26 25
Q0
GND 1
CLK_SEL 2
24 GND
23 Q3
Q1
CLK0 3
2 2 VDDO
Q2
CLK1 4
ICS83947I ^{21 Q4}
CLK_EN 5
20 GND
Q3
OE 6
19 Q5
VDD 7
Q4
GND 8
1 8 VDDO
17 GND
Q5
9 10 11 12 13 14 15 16
Q6
Q7
Q8
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
83947AYI
http://www.icst.com/products/hiperclocks.html
1
REV. B OCTOBER 11, 2004